core: hle: kernel: Updated implementation of svcSetHeapSize.

- Updates our svcSetHeapSize with latest HOS, furthermore allowing heap size to properly be extended/shrunk. - Validated with tests https://github.com/Atmosphere-NX/Atmosphere/blob/master/tests/TestSvc/source/test_set_heap_size.cpp.
Merge pull request #7621 from bunnei/set-mem-perm
2021-12-28 01:25:20 -08:00 · 2021-12-27 23:33:11 -08:00 · 2021-12-27 16:35:11 -08:00 · 2021-12-25 00:42:54 -08:00 · 2021-12-24 20:45:07 -05:00 · 2021-12-23 22:21:28 -08:00
143 changed files with 3426 additions and 2197 deletions
--- a/.ci/scripts/windows/docker.sh
+++ b/.ci/scripts/windows/docker.sh
@@ -41,12 +41,11 @@ for i in package/*.exe; do
 done

 pip3 install pefile
-python3 .ci/scripts/windows/scan_dll.py package/*.exe "package/"
-python3 .ci/scripts/windows/scan_dll.py package/imageformats/*.dll "package/"
+python3 .ci/scripts/windows/scan_dll.py package/*.exe package/imageformats/*.dll "package/"

 # copy FFmpeg libraries
 EXTERNALS_PATH="$(pwd)/build/externals"
-FFMPEG_DLL_PATH="$(find ${EXTERNALS_PATH} -maxdepth 1 -type d | grep ffmpeg)/bin"
+FFMPEG_DLL_PATH="$(find "${EXTERNALS_PATH}" -maxdepth 1 -type d | grep 'ffmpeg-')/bin"
 find ${FFMPEG_DLL_PATH} -type f -regex ".*\.dll" -exec cp -v {} package/ ';'

 # copy libraries from yuzu.exe path
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,12 +34,12 @@
 [submodule "opus"]
 	path = externals/opus/opus
 	url = https://github.com/xiph/opus.git
-[submodule "ffmpeg"]
-	path = externals/ffmpeg
-	url = https://git.ffmpeg.org/ffmpeg.git
 [submodule "SDL"]
 	path = externals/SDL
 	url = https://github.com/libsdl-org/SDL.git
 [submodule "externals/cpp-httplib"]
 	path = externals/cpp-httplib
 	url = https://github.com/yhirose/cpp-httplib.git
+[submodule "externals/ffmpeg/ffmpeg"]
+	path = externals/ffmpeg/ffmpeg
+	url = https://git.ffmpeg.org/ffmpeg.git
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,7 +131,7 @@ add_definitions(-DBOOST_ASIO_DISABLE_CONCEPTS)
 if (MSVC)
    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/std:c++latest>)

-    # cubeb and boost still make use of deprecated result_of.
+    # boost still makes use of deprecated result_of.
    add_definitions(-D_HAS_DEPRECATED_RESULT_OF)
 else()
    set(CMAKE_CXX_STANDARD 20)
@@ -249,7 +249,7 @@ if(ENABLE_QT)
    # Check for system Qt on Linux, fallback to bundled Qt
    if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
        if (NOT YUZU_USE_BUNDLED_QT)
-            find_package(Qt5 ${QT_VERSION} COMPONENTS Widgets)
+            find_package(Qt5 ${QT_VERSION} COMPONENTS Widgets DBus)
        endif()
        if (NOT Qt5_FOUND OR YUZU_USE_BUNDLED_QT)
            # Check for dependencies, then enable bundled Qt download
@@ -508,13 +508,13 @@ set(FFmpeg_COMPONENTS
    avutil
    swscale)

-if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+if (UNIX AND NOT APPLE)
    Include(FindPkgConfig REQUIRED)
    pkg_check_modules(LIBVA libva)
 endif()
 if (NOT YUZU_USE_BUNDLED_FFMPEG)
    # Use system installed FFmpeg
-    find_package(FFmpeg QUIET COMPONENTS ${FFmpeg_COMPONENTS})
+    find_package(FFmpeg 4.3 QUIET COMPONENTS ${FFmpeg_COMPONENTS})

    if (FFmpeg_FOUND)
        # Overwrite aggregate defines from FFmpeg module to avoid over-linking libraries.
@@ -527,225 +527,11 @@ if (NOT YUZU_USE_BUNDLED_FFMPEG)
            set(FFmpeg_INCLUDE_DIR ${FFmpeg_INCLUDE_DIR} ${FFmpeg_INCLUDE_${COMPONENT}} CACHE PATH "Path to FFmpeg headers" FORCE)
        endforeach()
    else()
-        message(WARNING "FFmpeg not found, falling back to externals")
+        message(WARNING "FFmpeg not found or too old, falling back to externals")
        set(YUZU_USE_BUNDLED_FFMPEG ON)
    endif()
 endif()

-if (YUZU_USE_BUNDLED_FFMPEG)
-    if (NOT WIN32)
-        # TODO(lat9nq): Move this to externals/ffmpeg/CMakeLists.txt (and move externals/ffmpeg to
-        # externals/ffmpeg/ffmpeg)
-
-        # Build FFmpeg from externals
-        message(STATUS "Using FFmpeg from externals")
-
-        # FFmpeg has source that requires one of nasm or yasm to assemble it.
-        # REQUIRED throws an error if not found here during configuration rather than during compilation.
-        find_program(ASSEMBLER NAMES nasm yasm)
-        if ("${ASSEMBLER}" STREQUAL "ASSEMBLER-NOTFOUND")
-            message(FATAL_ERROR "One of either `nasm` or `yasm` not found but is required.")
-        endif()
-
-        find_program(AUTOCONF autoconf)
-        if ("${AUTOCONF}" STREQUAL "AUTOCONF-NOTFOUND")
-            message(FATAL_ERROR "Required program `autoconf` not found.")
-        endif()
-
-        set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg)
-        set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg)
-        set(FFmpeg_MAKEFILE ${FFmpeg_BUILD_DIR}/Makefile)
-        make_directory(${FFmpeg_BUILD_DIR})
-
-        # Read version string from external
-        file(READ ${FFmpeg_PREFIX}/RELEASE FFmpeg_VERSION)
-        set(FFmpeg_FOUND NO)
-        if (NOT FFmpeg_VERSION STREQUAL "")
-            set(FFmpeg_FOUND YES)
-        endif()
-
-        unset(FFmpeg_LIBRARIES CACHE)
-        foreach(COMPONENT ${FFmpeg_COMPONENTS})
-            set(FFmpeg_${COMPONENT}_PREFIX "${FFmpeg_BUILD_DIR}/lib${COMPONENT}")
-            set(FFmpeg_${COMPONENT}_LIB_NAME "lib${COMPONENT}.a")
-            set(FFmpeg_${COMPONENT}_LIBRARY "${FFmpeg_${COMPONENT}_PREFIX}/${FFmpeg_${COMPONENT}_LIB_NAME}")
-
-            set(FFmpeg_LIBRARIES
-                ${FFmpeg_LIBRARIES}
-                ${FFmpeg_${COMPONENT}_LIBRARY}
-                CACHE PATH "Paths to FFmpeg libraries" FORCE)
-        endforeach()
-
-        Include(FindPkgConfig REQUIRED)
-        pkg_check_modules(LIBVA libva)
-        pkg_check_modules(CUDA cuda)
-        pkg_check_modules(FFNVCODEC ffnvcodec)
-        pkg_check_modules(VDPAU vdpau)
-
-        set(FFmpeg_HWACCEL_LIBRARIES)
-        set(FFmpeg_HWACCEL_FLAGS)
-        set(FFmpeg_HWACCEL_INCLUDE_DIRS)
-        set(FFmpeg_HWACCEL_LDFLAGS)
-
-        if(LIBVA_FOUND)
-            pkg_check_modules(LIBDRM libdrm REQUIRED)
-            find_package(X11 REQUIRED)
-            pkg_check_modules(LIBVA-DRM libva-drm REQUIRED)
-            pkg_check_modules(LIBVA-X11 libva-x11 REQUIRED)
-            list(APPEND FFmpeg_HWACCEL_LIBRARIES
-                ${LIBDRM_LIBRARIES}
-                ${X11_LIBRARIES}
-                ${LIBVA-DRM_LIBRARIES}
-                ${LIBVA-X11_LIBRARIES}
-                ${LIBVA_LIBRARIES})
-            set(FFmpeg_HWACCEL_FLAGS
-                --enable-hwaccel=h264_vaapi
-                --enable-hwaccel=vp8_vaapi
-                --enable-hwaccel=vp9_vaapi
-                --enable-libdrm)
-            list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS
-                ${LIBDRM_INCLUDE_DIRS}
-                ${X11_INCLUDE_DIRS}
-                ${LIBVA-DRM_INCLUDE_DIRS}
-                ${LIBVA-X11_INCLUDE_DIRS}
-                ${LIBVA_INCLUDE_DIRS}
-            )
-            message(STATUS "VA-API found")
-        else()
-            set(FFmpeg_HWACCEL_FLAGS --disable-vaapi)
-        endif()
-
-        if (FFNVCODEC_FOUND AND CUDA_FOUND)
-            list(APPEND FFmpeg_HWACCEL_FLAGS
-                --enable-cuvid
-                --enable-ffnvcodec
-                --enable-nvdec
-                --enable-hwaccel=h264_nvdec
-                --enable-hwaccel=vp8_nvdec
-                --enable-hwaccel=vp9_nvdec
-                --extra-cflags=-I${CUDA_INCLUDE_DIRS}
-            )
-            list(APPEND FFmpeg_HWACCEL_LIBRARIES
-                ${FFNVCODEC_LIBRARIES}
-                ${CUDA_LIBRARIES}
-            )
-            list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS
-                ${FFNVCODEC_INCLUDE_DIRS}
-                ${CUDA_INCLUDE_DIRS}
-            )
-            list(APPEND FFmpeg_HWACCEL_LDFLAGS
-                ${FFNVCODEC_LDFLAGS}
-                ${CUDA_LDFLAGS}
-            )
-            message(STATUS "ffnvcodec libraries version ${FFNVCODEC_VERSION} found")
-        endif()
-
-        if (VDPAU_FOUND)
-            list(APPEND FFmpeg_HWACCEL_FLAGS
-                --enable-vdpau
-                --enable-hwaccel=h264_vdpau
-                --enable-hwaccel=vp9_vdpau
-            )
-            list(APPEND FFmpeg_HWACCEL_LIBRARIES ${VDPAU_LIBRARIES})
-            list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${VDPAU_INCLUDE_DIRS})
-            list(APPEND FFmpeg_HWACCEL_LDFLAGS ${VDPAU_LDFLAGS})
-            message(STATUS "vdpau libraries version ${VDPAU_VERSION} found")
-        else()
-            list(APPEND FFmpeg_HWACCEL_FLAGS --disable-vdpau)
-        endif()
-
-        # `configure` parameters builds only exactly what yuzu needs from FFmpeg
-        # `--disable-vdpau` is needed to avoid linking issues
-        add_custom_command(
-            OUTPUT
-                ${FFmpeg_MAKEFILE}
-            COMMAND
-                /bin/bash ${FFmpeg_PREFIX}/configure
-                    --disable-avdevice
-                    --disable-avfilter
-                    --disable-avformat
-                    --disable-doc
-                    --disable-everything
-                    --disable-ffmpeg
-                    --disable-ffprobe
-                    --disable-network
-                    --disable-postproc
-                    --disable-swresample
-                    --enable-decoder=h264
-                    --enable-decoder=vp8
-                    --enable-decoder=vp9
-                    --cc="${CMAKE_C_COMPILER}"
-                    --cxx="${CMAKE_CXX_COMPILER}"
-                    ${FFmpeg_HWACCEL_FLAGS}
-            WORKING_DIRECTORY
-                ${FFmpeg_BUILD_DIR}
-        )
-        unset(FFmpeg_HWACCEL_FLAGS)
-
-        # Workaround for Ubuntu 18.04's older version of make not being able to call make as a child
-        # with context of the jobserver. Also helps ninja users.
-        execute_process(
-            COMMAND
-                nproc
-            OUTPUT_VARIABLE
-                SYSTEM_THREADS)
-
-        set(FFmpeg_BUILD_LIBRARIES ${FFmpeg_LIBRARIES})
-        add_custom_command(
-            OUTPUT
-                ${FFmpeg_BUILD_LIBRARIES}
-            COMMAND
-                make -j${SYSTEM_THREADS}
-            WORKING_DIRECTORY
-                ${FFmpeg_BUILD_DIR}
-        )
-
-        set(FFmpeg_INCLUDE_DIR
-            "${FFmpeg_PREFIX};${FFmpeg_BUILD_DIR};${FFmpeg_HWACCEL_INCLUDE_DIRS}"
-            CACHE PATH "Path to FFmpeg headers" FORCE)
-
-        set(FFmpeg_LDFLAGS
-            "${FFmpeg_HWACCEL_LDFLAGS}"
-            CACHE STRING "FFmpeg linker flags" FORCE)
-
-        # ALL makes this custom target build every time
-        # but it won't actually build if the DEPENDS parameter is up to date
-        add_custom_target(ffmpeg-configure ALL DEPENDS ${FFmpeg_MAKEFILE})
-        add_custom_target(ffmpeg-build ALL DEPENDS ${FFmpeg_BUILD_LIBRARIES} ffmpeg-configure)
-        link_libraries(${FFmpeg_LIBVA_LIBRARIES})
-        set(FFmpeg_LIBRARIES ${FFmpeg_BUILD_LIBRARIES} ${FFmpeg_HWACCEL_LIBRARIES}
-            CACHE PATH "Paths to FFmpeg libraries" FORCE)
-        unset(FFmpeg_BUILD_LIBRARIES)
-        unset(FFmpeg_HWACCEL_FLAGS)
-        unset(FFmpeg_HWACCEL_INCLUDE_DIRS)
-        unset(FFmpeg_HWACCEL_LDFLAGS)
-        unset(FFmpeg_HWACCEL_LIBRARIES)
-
-        if (FFmpeg_FOUND)
-            message(STATUS "Found FFmpeg version ${FFmpeg_VERSION}")
-        else()
-            message(FATAL_ERROR "FFmpeg not found")
-        endif()
-    else() # WIN32
-        # Use yuzu FFmpeg binaries
-        set(FFmpeg_EXT_NAME "ffmpeg-4.4")
-        set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
-        download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
-        set(FFmpeg_FOUND YES)
-        set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
-        set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg library directory" FORCE)
-        set(FFmpeg_LDFLAGS "" CACHE STRING "FFmpeg linker flags" FORCE)
-        set(FFmpeg_DLL_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg dll's" FORCE)
-        set(FFmpeg_LIBRARIES
-            ${FFmpeg_LIBRARY_DIR}/swscale.lib
-            ${FFmpeg_LIBRARY_DIR}/avcodec.lib
-            ${FFmpeg_LIBRARY_DIR}/avutil.lib
-            CACHE PATH "Paths to FFmpeg libraries" FORCE)
-    endif()
-endif()
-
-unset(FFmpeg_COMPONENTS)
-
 # Prefer the -pthread flag on Linux.
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
--- a/CMakeModules/GenerateSCMRev.cmake
+++ b/CMakeModules/GenerateSCMRev.cmake
@@ -11,9 +11,15 @@ find_package(Git QUIET PATHS "${GIT_EXECUTABLE}")

 # generate git/build information
 include(GetGitRevisionDescription)
-get_git_head_revision(GIT_REF_SPEC GIT_REV)
-git_describe(GIT_DESC --always --long --dirty)
-git_branch_name(GIT_BRANCH)
+if(NOT GIT_REF_SPEC)
+    get_git_head_revision(GIT_REF_SPEC GIT_REV)
+endif()
+if(NOT GIT_DESC)
+    git_describe(GIT_DESC --always --long --dirty)
+endif()
+if (NOT GIT_BRANCH)
+  git_branch_name(GIT_BRANCH)
+endif()
 get_timestamp(BUILD_DATE)

 # Generate cpp with Git revision from template
--- a/dist/yuzu.desktop
+++ b/dist/yuzu.desktop
@@ -8,5 +8,5 @@ Icon=yuzu
 TryExec=yuzu
 Exec=yuzu %f
 Categories=Game;Emulator;Qt;
-MimeType=application/x-nx-nro;application/x-nx-nso;
+MimeType=application/x-nx-nro;application/x-nx-nso;application/x-nx-nsp;application/x-nx-xci;
 Keywords=Switch;Nintendo;
--- a/dist/yuzu.xml
+++ b/dist/yuzu.xml
@@ -15,4 +15,19 @@
        <glob pattern="*.nso"/>
        <magic><match value="NSO" type="string" offset="0"/></magic>
    </mime-type>
+
+    <mime-type type="application/x-nx-nsp">
+        <comment>Nintendo Switch Package</comment>
+        <acronym>NSP</acronym>
+        <icon name="yuzu"/>
+        <glob pattern="*.nsp"/>
+        <magic><match value="PFS" type="string" offset="0"/></magic>
+    </mime-type>
+
+    <mime-type type="application/x-nx-xci">
+        <comment>Nintendo Switch Card Image</comment>
+        <acronym>XCI</acronym>
+        <icon name="yuzu"/>
+        <glob pattern="*.xci"/>
+    </mime-type>
 </mime-info>
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -44,10 +44,6 @@ target_include_directories(mbedtls PUBLIC ./mbedtls/include)
 add_library(microprofile INTERFACE)
 target_include_directories(microprofile INTERFACE ./microprofile)

-# Unicorn
-add_library(unicorn-headers INTERFACE)
-target_include_directories(unicorn-headers INTERFACE ./unicorn/include)
-
 # libusb
 if (NOT LIBUSB_FOUND OR YUZU_USE_BUNDLED_LIBUSB)
    add_subdirectory(libusb)
@@ -56,11 +52,12 @@ endif()
 # SDL2
 if (YUZU_USE_EXTERNAL_SDL2)
    if (NOT WIN32)
-        # Yuzu itself needs: Events Joystick Haptic Sensor Timers Audio
+        # Yuzu itself needs: Atomic Audio Events Joystick Haptic Sensor Threads Timers
+        # Since 2.0.18 Atomic+Threads required for HIDAPI/libusb (see https://github.com/libsdl-org/SDL/issues/5095)
        # Yuzu-cmd also needs: Video (depends on Loadso/Dlopen)
        set(SDL_UNUSED_SUBSYSTEMS
-            Atomic Render Power Threads
-            File CPUinfo Filesystem Locale)
+            CPUinfo File Filesystem
+            Locale Power Render)
        foreach(_SUB ${SDL_UNUSED_SUBSYSTEMS})
          string(TOUPPER ${_SUB} _OPT)
          option(SDL_${_OPT} "" OFF)
@@ -125,3 +122,12 @@ if (NOT opus_FOUND)
    message(STATUS "opus 1.3 or newer not found, falling back to externals")
    add_subdirectory(opus EXCLUDE_FROM_ALL)
 endif()
+
+# FFMpeg
+if (YUZU_USE_BUNDLED_FFMPEG)
+    add_subdirectory(ffmpeg)
+    set(FFmpeg_PATH "${FFmpeg_PATH}" PARENT_SCOPE)
+    set(FFmpeg_LDFLAGS "${FFmpeg_LDFLAGS}" PARENT_SCOPE)
+    set(FFmpeg_LIBRARIES "${FFmpeg_LIBRARIES}" PARENT_SCOPE)
+    set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
+endif()
--- a/externals/SDL
+++ b/externals/SDL
--- a/externals/Vulkan-Headers
+++ b/externals/Vulkan-Headers
--- a/externals/cubeb
+++ b/externals/cubeb
--- a/externals/ffmpeg
+++ b/externals/ffmpeg
--- a/externals/ffmpeg/CMakeLists.txt
+++ b/externals/ffmpeg/CMakeLists.txt
@@ -0,0 +1,214 @@
+if (NOT WIN32)
+    # Build FFmpeg from externals
+    message(STATUS "Using FFmpeg from externals")
+
+    if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64|amd64)")
+        # FFmpeg has source that requires one of nasm or yasm to assemble it.
+        # REQUIRED throws an error if not found here during configuration rather than during compilation.
+        find_program(ASSEMBLER NAMES nasm yasm)
+        if ("${ASSEMBLER}" STREQUAL "ASSEMBLER-NOTFOUND")
+            message(FATAL_ERROR "One of either `nasm` or `yasm` not found but is required.")
+        endif()
+    endif()
+
+    find_program(AUTOCONF autoconf)
+    if ("${AUTOCONF}" STREQUAL "AUTOCONF-NOTFOUND")
+        message(FATAL_ERROR "Required program `autoconf` not found.")
+    endif()
+
+    set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg/ffmpeg)
+    set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg-build)
+    set(FFmpeg_MAKEFILE ${FFmpeg_BUILD_DIR}/Makefile)
+    make_directory(${FFmpeg_BUILD_DIR})
+
+    # Read version string from external
+    file(READ ${FFmpeg_PREFIX}/RELEASE FFmpeg_VERSION)
+    set(FFmpeg_FOUND NO)
+    if (NOT FFmpeg_VERSION STREQUAL "")
+        set(FFmpeg_FOUND YES)
+    endif()
+
+    unset(FFmpeg_LIBRARIES CACHE)
+    foreach(COMPONENT ${FFmpeg_COMPONENTS})
+        set(FFmpeg_${COMPONENT}_PREFIX "${FFmpeg_BUILD_DIR}/lib${COMPONENT}")
+        set(FFmpeg_${COMPONENT}_LIB_NAME "lib${COMPONENT}.a")
+        set(FFmpeg_${COMPONENT}_LIBRARY "${FFmpeg_${COMPONENT}_PREFIX}/${FFmpeg_${COMPONENT}_LIB_NAME}")
+
+        set(FFmpeg_LIBRARIES
+            ${FFmpeg_LIBRARIES}
+            ${FFmpeg_${COMPONENT}_LIBRARY}
+            CACHE PATH "Paths to FFmpeg libraries" FORCE)
+    endforeach()
+
+    Include(FindPkgConfig REQUIRED)
+    pkg_check_modules(LIBVA libva)
+    pkg_check_modules(CUDA cuda)
+    pkg_check_modules(FFNVCODEC ffnvcodec)
+    pkg_check_modules(VDPAU vdpau)
+
+    set(FFmpeg_HWACCEL_LIBRARIES)
+    set(FFmpeg_HWACCEL_FLAGS)
+    set(FFmpeg_HWACCEL_INCLUDE_DIRS)
+    set(FFmpeg_HWACCEL_LDFLAGS)
+
+    if(LIBVA_FOUND)
+        pkg_check_modules(LIBDRM libdrm REQUIRED)
+        find_package(X11 REQUIRED)
+        pkg_check_modules(LIBVA-DRM libva-drm REQUIRED)
+        pkg_check_modules(LIBVA-X11 libva-x11 REQUIRED)
+        list(APPEND FFmpeg_HWACCEL_LIBRARIES
+            ${LIBDRM_LIBRARIES}
+            ${X11_LIBRARIES}
+            ${LIBVA-DRM_LIBRARIES}
+            ${LIBVA-X11_LIBRARIES}
+            ${LIBVA_LIBRARIES})
+        set(FFmpeg_HWACCEL_FLAGS
+            --enable-hwaccel=h264_vaapi
+            --enable-hwaccel=vp8_vaapi
+            --enable-hwaccel=vp9_vaapi
+            --enable-libdrm)
+        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS
+            ${LIBDRM_INCLUDE_DIRS}
+            ${X11_INCLUDE_DIRS}
+            ${LIBVA-DRM_INCLUDE_DIRS}
+            ${LIBVA-X11_INCLUDE_DIRS}
+            ${LIBVA_INCLUDE_DIRS}
+        )
+        message(STATUS "VA-API found")
+    else()
+        set(FFmpeg_HWACCEL_FLAGS --disable-vaapi)
+    endif()
+
+    if (FFNVCODEC_FOUND)
+        list(APPEND FFmpeg_HWACCEL_FLAGS
+            --enable-cuvid
+            --enable-ffnvcodec
+            --enable-nvdec
+            --enable-hwaccel=h264_nvdec
+            --enable-hwaccel=vp8_nvdec
+            --enable-hwaccel=vp9_nvdec
+        )
+        list(APPEND FFmpeg_HWACCEL_LIBRARIES ${FFNVCODEC_LIBRARIES})
+        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${FFNVCODEC_INCLUDE_DIRS})
+        list(APPEND FFmpeg_HWACCEL_LDFLAGS ${FFNVCODEC_LDFLAGS})
+        message(STATUS "ffnvcodec libraries version ${FFNVCODEC_VERSION} found")
+        # ffnvenc could load CUDA libraries at the runtime using dlopen/dlsym or LoadLibrary/GetProcAddress
+        # here we handle the hard-linking senario where CUDA is linked during compilation
+        if (CUDA_FOUND)
+            list(APPEND FFmpeg_HWACCEL_FLAGS --extra-cflags=-I${CUDA_INCLUDE_DIRS})
+            list(APPEND FFmpeg_HWACCEL_LIBRARIES ${CUDA_LIBRARIES})
+            list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${CUDA_INCLUDE_DIRS})
+            list(APPEND FFmpeg_HWACCEL_LDFLAGS ${CUDA_LDFLAGS})
+            message(STATUS "CUDA libraries found, hard-linking will be performed")
+        endif(CUDA_FOUND)
+    endif()
+
+    if (VDPAU_FOUND)
+        list(APPEND FFmpeg_HWACCEL_FLAGS
+            --enable-vdpau
+            --enable-hwaccel=h264_vdpau
+            --enable-hwaccel=vp9_vdpau
+        )
+        list(APPEND FFmpeg_HWACCEL_LIBRARIES ${VDPAU_LIBRARIES})
+        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${VDPAU_INCLUDE_DIRS})
+        list(APPEND FFmpeg_HWACCEL_LDFLAGS ${VDPAU_LDFLAGS})
+        message(STATUS "vdpau libraries version ${VDPAU_VERSION} found")
+    else()
+        list(APPEND FFmpeg_HWACCEL_FLAGS --disable-vdpau)
+    endif()
+
+    # `configure` parameters builds only exactly what yuzu needs from FFmpeg
+    # `--disable-vdpau` is needed to avoid linking issues
+    add_custom_command(
+        OUTPUT
+            ${FFmpeg_MAKEFILE}
+        COMMAND
+            /bin/bash ${FFmpeg_PREFIX}/configure
+                --disable-avdevice
+                --disable-avfilter
+                --disable-avformat
+                --disable-doc
+                --disable-everything
+                --disable-ffmpeg
+                --disable-ffprobe
+                --disable-network
+                --disable-postproc
+                --disable-swresample
+                --enable-decoder=h264
+                --enable-decoder=vp8
+                --enable-decoder=vp9
+                --cc="${CMAKE_C_COMPILER}"
+                --cxx="${CMAKE_CXX_COMPILER}"
+                ${FFmpeg_HWACCEL_FLAGS}
+        WORKING_DIRECTORY
+            ${FFmpeg_BUILD_DIR}
+    )
+    unset(FFmpeg_HWACCEL_FLAGS)
+
+    # Workaround for Ubuntu 18.04's older version of make not being able to call make as a child
+    # with context of the jobserver. Also helps ninja users.
+    execute_process(
+        COMMAND
+            nproc
+        OUTPUT_VARIABLE
+            SYSTEM_THREADS)
+
+    set(FFmpeg_BUILD_LIBRARIES ${FFmpeg_LIBRARIES})
+    add_custom_command(
+        OUTPUT
+            ${FFmpeg_BUILD_LIBRARIES}
+        COMMAND
+            make -j${SYSTEM_THREADS}
+        WORKING_DIRECTORY
+            ${FFmpeg_BUILD_DIR}
+    )
+
+    set(FFmpeg_INCLUDE_DIR
+        "${FFmpeg_PREFIX};${FFmpeg_BUILD_DIR};${FFmpeg_HWACCEL_INCLUDE_DIRS}"
+        CACHE PATH "Path to FFmpeg headers" FORCE)
+
+    set(FFmpeg_LDFLAGS
+        "${FFmpeg_HWACCEL_LDFLAGS}"
+        CACHE STRING "FFmpeg linker flags" FORCE)
+
+    # ALL makes this custom target build every time
+    # but it won't actually build if the DEPENDS parameter is up to date
+    add_custom_target(ffmpeg-configure ALL DEPENDS ${FFmpeg_MAKEFILE})
+    add_custom_target(ffmpeg-build ALL DEPENDS ${FFmpeg_BUILD_LIBRARIES} ffmpeg-configure)
+    link_libraries(${FFmpeg_LIBVA_LIBRARIES})
+    set(FFmpeg_LIBRARIES ${FFmpeg_BUILD_LIBRARIES} ${FFmpeg_HWACCEL_LIBRARIES}
+        CACHE PATH "Paths to FFmpeg libraries" FORCE)
+    unset(FFmpeg_BUILD_LIBRARIES)
+    unset(FFmpeg_HWACCEL_FLAGS)
+    unset(FFmpeg_HWACCEL_INCLUDE_DIRS)
+    unset(FFmpeg_HWACCEL_LDFLAGS)
+    unset(FFmpeg_HWACCEL_LIBRARIES)
+
+    if (FFmpeg_FOUND)
+        message(STATUS "Found FFmpeg version ${FFmpeg_VERSION}")
+    else()
+        message(FATAL_ERROR "FFmpeg not found")
+    endif()
+else(WIN32)
+    # Use yuzu FFmpeg binaries
+    set(FFmpeg_EXT_NAME "ffmpeg-4.4")
+    set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
+    download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
+    set(FFmpeg_FOUND YES)
+    set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
+    set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg library directory" FORCE)
+    set(FFmpeg_LDFLAGS "" CACHE STRING "FFmpeg linker flags" FORCE)
+    set(FFmpeg_DLL_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg dll's" FORCE)
+    set(FFmpeg_LIBRARIES
+    ${FFmpeg_LIBRARY_DIR}/swscale.lib
+    ${FFmpeg_LIBRARY_DIR}/avcodec.lib
+    ${FFmpeg_LIBRARY_DIR}/avutil.lib
+    CACHE PATH "Paths to FFmpeg libraries" FORCE)
+    # exported variables
+    set(FFmpeg_PATH "${FFmpeg_PATH}" PARENT_SCOPE)
+    set(FFmpeg_LDFLAGS "${FFmpeg_LDFLAGS}" PARENT_SCOPE)
+    set(FFmpeg_LIBRARIES "${FFmpeg_LIBRARIES}" PARENT_SCOPE)
+    set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
+endif(WIN32)
+
+unset(FFmpeg_COMPONENTS)
--- a/externals/ffmpeg/ffmpeg
+++ b/externals/ffmpeg/ffmpeg
--- a/externals/find-modules/FindUnicorn.cmake
+++ b/externals/find-modules/FindUnicorn.cmake
@@ -1,18 +0,0 @@
-# Exports:
-#  LIBUNICORN_FOUND
-#  LIBUNICORN_INCLUDE_DIR
-#  LIBUNICORN_LIBRARY
-
-find_path(LIBUNICORN_INCLUDE_DIR
-          unicorn/unicorn.h
-          HINTS $ENV{UNICORNDIR}
-          PATH_SUFFIXES include)
-
-find_library(LIBUNICORN_LIBRARY
-             NAMES unicorn
-             HINTS $ENV{UNICORNDIR})
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(unicorn DEFAULT_MSG
-                                  LIBUNICORN_LIBRARY LIBUNICORN_INCLUDE_DIR)
-mark_as_advanced(LIBUNICORN_INCLUDE_DIR LIBUNICORN_LIBRARY)
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -22,6 +22,11 @@ add_custom_command(OUTPUT scm_rev.cpp
      -DTITLE_BAR_FORMAT_RUNNING=${TITLE_BAR_FORMAT_RUNNING}
      -DBUILD_TAG=${BUILD_TAG}
      -DBUILD_ID=${DISPLAY_VERSION}
+      -DGIT_REF_SPEC=${GIT_REF_SPEC}
+      -DGIT_REV=${GIT_REV}
+      -DGIT_DESC=${GIT_DESC}
+      -DGIT_BRANCH=${GIT_BRANCH}
+      -DBUILD_FULLNAME=${BUILD_FULLNAME}
      -DGIT_EXECUTABLE=${GIT_EXECUTABLE}
      -P ${CMAKE_SOURCE_DIR}/CMakeModules/GenerateSCMRev.cmake
    DEPENDS
--- a/src/common/input.h
+++ b/src/common/input.h
@@ -227,7 +227,7 @@ struct CallbackStatus {

 // Triggered once every input change
 struct InputCallback {
-    std::function<void(CallbackStatus)> on_change;
+    std::function<void(const CallbackStatus&)> on_change;
 };

 /// An abstract class template for an input device (a button, an analog input, etc.).
@@ -236,14 +236,10 @@ public:
    virtual ~InputDevice() = default;

    // Request input device to update if necessary
-    virtual void SoftUpdate() {
-        return;
-    }
+    virtual void SoftUpdate() {}

    // Force input device to update data regardless of the current state
-    virtual void ForceUpdate() {
-        return;
-    }
+    virtual void ForceUpdate() {}

    // Sets the function to be triggered when input changes
    void SetCallback(InputCallback callback_) {
@@ -251,7 +247,7 @@ public:
    }

    // Triggers the function set in the callback
-    void TriggerOnChange(CallbackStatus status) {
+    void TriggerOnChange(const CallbackStatus& status) {
        if (callback.on_change) {
            callback.on_change(status);
        }
@@ -266,11 +262,9 @@ class OutputDevice {
 public:
    virtual ~OutputDevice() = default;

-    virtual void SetLED([[maybe_unused]] LedStatus led_status) {
-        return;
-    }
+    virtual void SetLED([[maybe_unused]] const LedStatus& led_status) {}

-    virtual VibrationError SetVibration([[maybe_unused]] VibrationStatus vibration_status) {
+    virtual VibrationError SetVibration([[maybe_unused]] const VibrationStatus& vibration_status) {
        return VibrationError::NotSupported;
    }

--- a/src/common/logging/filter.cpp
+++ b/src/common/logging/filter.cpp
@@ -114,6 +114,7 @@ bool ParseFilterRule(Filter& instance, Iterator begin, Iterator end) {
    SUB(Service, NGCT)                                                                             \
    SUB(Service, NIFM)                                                                             \
    SUB(Service, NIM)                                                                              \
+    SUB(Service, NOTIF)                                                                            \
    SUB(Service, NPNS)                                                                             \
    SUB(Service, NS)                                                                               \
    SUB(Service, NVDRV)                                                                            \
--- a/src/common/logging/types.h
+++ b/src/common/logging/types.h
@@ -82,6 +82,7 @@ enum class Class : u8 {
    Service_NGCT,      ///< The NGCT (No Good Content for Terra) service
    Service_NIFM,      ///< The NIFM (Network interface) service
    Service_NIM,       ///< The NIM service
+    Service_NOTIF,     ///< The NOTIF (Notification) service
    Service_NPNS,      ///< The NPNS service
    Service_NS,        ///< The NS services
    Service_NVDRV,     ///< The NVDRV (Nvidia driver) service
--- a/src/common/x64/cpu_detect.cpp
+++ b/src/common/x64/cpu_detect.cpp
@@ -71,9 +71,6 @@ static CPUCaps Detect() {
    else
        caps.manufacturer = Manufacturer::Unknown;

-    u32 family = {};
-    u32 model = {};
-
    __cpuid(cpu_id, 0x80000000);

    u32 max_ex_fn = cpu_id[0];
@@ -84,15 +81,6 @@ static CPUCaps Detect() {
    // Detect family and other miscellaneous features
    if (max_std_fn >= 1) {
        __cpuid(cpu_id, 0x00000001);
-        family = (cpu_id[0] >> 8) & 0xf;
-        model = (cpu_id[0] >> 4) & 0xf;
-        if (family == 0xf) {
-            family += (cpu_id[0] >> 20) & 0xff;
-        }
-        if (family >= 6) {
-            model += ((cpu_id[0] >> 16) & 0xf) << 4;
-        }
-
        if ((cpu_id[3] >> 25) & 1)
            caps.sse = true;
        if ((cpu_id[3] >> 26) & 1)
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -179,12 +179,15 @@ add_library(core STATIC
    hle/kernel/k_client_port.h
    hle/kernel/k_client_session.cpp
    hle/kernel/k_client_session.h
+    hle/kernel/k_code_memory.cpp
+    hle/kernel/k_code_memory.h
    hle/kernel/k_condition_variable.cpp
    hle/kernel/k_condition_variable.h
    hle/kernel/k_event.cpp
    hle/kernel/k_event.h
    hle/kernel/k_handle_table.cpp
    hle/kernel/k_handle_table.h
+    hle/kernel/k_light_condition_variable.cpp
    hle/kernel/k_light_condition_variable.h
    hle/kernel/k_light_lock.cpp
    hle/kernel/k_light_lock.h
@@ -237,6 +240,7 @@ add_library(core STATIC
    hle/kernel/k_system_control.h
    hle/kernel/k_thread.cpp
    hle/kernel/k_thread.h
+    hle/kernel/k_thread_queue.cpp
    hle/kernel/k_thread_queue.h
    hle/kernel/k_trace.h
    hle/kernel/k_transfer_memory.cpp
@@ -261,8 +265,6 @@ add_library(core STATIC
    hle/kernel/svc_wrap.h
    hle/kernel/time_manager.cpp
    hle/kernel/time_manager.h
-    hle/lock.cpp
-    hle/lock.h
    hle/result.h
    hle/service/acc/acc.cpp
    hle/service/acc/acc.h
@@ -408,6 +410,8 @@ add_library(core STATIC
    hle/service/glue/glue.h
    hle/service/glue/glue_manager.cpp
    hle/service/glue/glue_manager.h
+    hle/service/glue/notif.cpp
+    hle/service/glue/notif.h
    hle/service/grc/grc.cpp
    hle/service/grc/grc.h
    hle/service/hid/hid.cpp
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -521,12 +521,6 @@ const ARM_Interface& System::CurrentArmInterface() const {
    return impl->kernel.CurrentPhysicalCore().ArmInterface();
 }

-std::size_t System::CurrentCoreIndex() const {
-    std::size_t core = impl->kernel.GetCurrentHostThreadID();
-    ASSERT(core < Core::Hardware::NUM_CPU_CORES);
-    return core;
-}
-
 Kernel::PhysicalCore& System::CurrentPhysicalCore() {
    return impl->kernel.CurrentPhysicalCore();
 }
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -208,9 +208,6 @@ public:
    /// Gets an ARM interface to the CPU core that is currently running
    [[nodiscard]] const ARM_Interface& CurrentArmInterface() const;

-    /// Gets the index of the currently running CPU core
-    [[nodiscard]] std::size_t CurrentCoreIndex() const;
-
    /// Gets the physical core for the CPU core that is currently running
    [[nodiscard]] Kernel::PhysicalCore& CurrentPhysicalCore();

--- a/src/core/cpu_manager.cpp
+++ b/src/core/cpu_manager.cpp
@@ -117,17 +117,18 @@ void CpuManager::MultiCoreRunGuestLoop() {
            physical_core = &kernel.CurrentPhysicalCore();
        }
        system.ExitDynarmicProfile();
-        physical_core->ArmInterface().ClearExclusiveState();
-        kernel.CurrentScheduler()->RescheduleCurrentCore();
+        {
+            Kernel::KScopedDisableDispatch dd(kernel);
+            physical_core->ArmInterface().ClearExclusiveState();
+        }
    }
 }

 void CpuManager::MultiCoreRunIdleThread() {
    auto& kernel = system.Kernel();
    while (true) {
-        auto& physical_core = kernel.CurrentPhysicalCore();
-        physical_core.Idle();
-        kernel.CurrentScheduler()->RescheduleCurrentCore();
+        Kernel::KScopedDisableDispatch dd(kernel);
+        kernel.CurrentPhysicalCore().Idle();
    }
 }

@@ -135,12 +136,12 @@ void CpuManager::MultiCoreRunSuspendThread() {
    auto& kernel = system.Kernel();
    kernel.CurrentScheduler()->OnThreadStart();
    while (true) {
-        auto core = kernel.GetCurrentHostThreadID();
+        auto core = kernel.CurrentPhysicalCoreIndex();
        auto& scheduler = *kernel.CurrentScheduler();
        Kernel::KThread* current_thread = scheduler.GetCurrentThread();
        Common::Fiber::YieldTo(current_thread->GetHostContext(), *core_data[core].host_context);
        ASSERT(scheduler.ContextSwitchPending());
-        ASSERT(core == kernel.GetCurrentHostThreadID());
+        ASSERT(core == kernel.CurrentPhysicalCoreIndex());
        scheduler.RescheduleCurrentCore();
    }
 }
@@ -346,13 +347,9 @@ void CpuManager::RunThread(std::stop_token stop_token, std::size_t core) {
            sc_sync_first_use = false;
        }

-        // Abort if emulation was killed before the session really starts
-        if (!system.IsPoweredOn()) {
-            return;
-        }
-
+        // Emulation was stopped
        if (stop_token.stop_requested()) {
-            break;
+            return;
        }

        auto current_thread = system.Kernel().CurrentScheduler()->GetCurrentThread();
--- a/src/core/hid/emulated_console.cpp
+++ b/src/core/hid/emulated_console.cpp
@@ -66,9 +66,10 @@ void EmulatedConsole::ReloadInput() {

    motion_devices = Common::Input::CreateDevice<Common::Input::InputDevice>(motion_params);
    if (motion_devices) {
-        Common::Input::InputCallback motion_callback{
-            [this](Common::Input::CallbackStatus callback) { SetMotion(callback); }};
-        motion_devices->SetCallback(motion_callback);
+        motion_devices->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback) { SetMotion(callback); },
+        });
    }

    // Unique index for identifying touch device source
@@ -78,9 +79,12 @@ void EmulatedConsole::ReloadInput() {
        if (!touch_device) {
            continue;
        }
-        Common::Input::InputCallback touch_callback{
-            [this, index](Common::Input::CallbackStatus callback) { SetTouch(callback, index); }};
-        touch_device->SetCallback(touch_callback);
+        touch_device->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetTouch(callback, index);
+                },
+        });
        index++;
    }
 }
@@ -127,7 +131,7 @@ void EmulatedConsole::SetMotionParam(Common::ParamPackage param) {
    ReloadInput();
 }

-void EmulatedConsole::SetMotion(Common::Input::CallbackStatus callback) {
+void EmulatedConsole::SetMotion(const Common::Input::CallbackStatus& callback) {
    std::lock_guard lock{mutex};
    auto& raw_status = console.motion_values.raw_status;
    auto& emulated = console.motion_values.emulated;
@@ -165,8 +169,7 @@ void EmulatedConsole::SetMotion(Common::Input::CallbackStatus callback) {
    TriggerOnChange(ConsoleTriggerType::Motion);
 }

-void EmulatedConsole::SetTouch(Common::Input::CallbackStatus callback,
-                               [[maybe_unused]] std::size_t index) {
+void EmulatedConsole::SetTouch(const Common::Input::CallbackStatus& callback, std::size_t index) {
    if (index >= console.touch_values.size()) {
        return;
    }
--- a/src/core/hid/emulated_console.h
+++ b/src/core/hid/emulated_console.h
@@ -157,14 +157,14 @@ private:
     * Updates the motion status of the console
     * @param callback A CallbackStatus containing gyro and accelerometer data
     */
-    void SetMotion(Common::Input::CallbackStatus callback);
+    void SetMotion(const Common::Input::CallbackStatus& callback);

    /**
     * Updates the touch status of the console
     * @param callback A CallbackStatus containing the touch position
     * @param index Finger ID to be updated
     */
-    void SetTouch(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetTouch(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Triggers a callback that something has changed on the console status
--- a/src/core/hid/emulated_controller.cpp
+++ b/src/core/hid/emulated_controller.cpp
@@ -205,11 +205,12 @@ void EmulatedController::ReloadInput() {
            continue;
        }
        const auto uuid = Common::UUID{button_params[index].Get("guid", "")};
-        Common::Input::InputCallback button_callback{
-            [this, index, uuid](Common::Input::CallbackStatus callback) {
-                SetButton(callback, index, uuid);
-            }};
-        button_devices[index]->SetCallback(button_callback);
+        button_devices[index]->SetCallback({
+            .on_change =
+                [this, index, uuid](const Common::Input::CallbackStatus& callback) {
+                    SetButton(callback, index, uuid);
+                },
+        });
        button_devices[index]->ForceUpdate();
    }

@@ -218,11 +219,12 @@ void EmulatedController::ReloadInput() {
            continue;
        }
        const auto uuid = Common::UUID{stick_params[index].Get("guid", "")};
-        Common::Input::InputCallback stick_callback{
-            [this, index, uuid](Common::Input::CallbackStatus callback) {
-                SetStick(callback, index, uuid);
-            }};
-        stick_devices[index]->SetCallback(stick_callback);
+        stick_devices[index]->SetCallback({
+            .on_change =
+                [this, index, uuid](const Common::Input::CallbackStatus& callback) {
+                    SetStick(callback, index, uuid);
+                },
+        });
        stick_devices[index]->ForceUpdate();
    }

@@ -231,11 +233,12 @@ void EmulatedController::ReloadInput() {
            continue;
        }
        const auto uuid = Common::UUID{trigger_params[index].Get("guid", "")};
-        Common::Input::InputCallback trigger_callback{
-            [this, index, uuid](Common::Input::CallbackStatus callback) {
-                SetTrigger(callback, index, uuid);
-            }};
-        trigger_devices[index]->SetCallback(trigger_callback);
+        trigger_devices[index]->SetCallback({
+            .on_change =
+                [this, index, uuid](const Common::Input::CallbackStatus& callback) {
+                    SetTrigger(callback, index, uuid);
+                },
+        });
        trigger_devices[index]->ForceUpdate();
    }

@@ -243,9 +246,12 @@ void EmulatedController::ReloadInput() {
        if (!battery_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback battery_callback{
-            [this, index](Common::Input::CallbackStatus callback) { SetBattery(callback, index); }};
-        battery_devices[index]->SetCallback(battery_callback);
+        battery_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetBattery(callback, index);
+                },
+        });
        battery_devices[index]->ForceUpdate();
    }

@@ -253,9 +259,12 @@ void EmulatedController::ReloadInput() {
        if (!motion_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback motion_callback{
-            [this, index](Common::Input::CallbackStatus callback) { SetMotion(callback, index); }};
-        motion_devices[index]->SetCallback(motion_callback);
+        motion_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetMotion(callback, index);
+                },
+        });
        motion_devices[index]->ForceUpdate();
    }

@@ -267,22 +276,24 @@ void EmulatedController::ReloadInput() {
        if (!tas_button_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback button_callback{
-            [this, index, tas_uuid](Common::Input::CallbackStatus callback) {
-                SetButton(callback, index, tas_uuid);
-            }};
-        tas_button_devices[index]->SetCallback(button_callback);
+        tas_button_devices[index]->SetCallback({
+            .on_change =
+                [this, index, tas_uuid](const Common::Input::CallbackStatus& callback) {
+                    SetButton(callback, index, tas_uuid);
+                },
+        });
    }

    for (std::size_t index = 0; index < tas_stick_devices.size(); ++index) {
        if (!tas_stick_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback stick_callback{
-            [this, index, tas_uuid](Common::Input::CallbackStatus callback) {
-                SetStick(callback, index, tas_uuid);
-            }};
-        tas_stick_devices[index]->SetCallback(stick_callback);
+        tas_stick_devices[index]->SetCallback({
+            .on_change =
+                [this, index, tas_uuid](const Common::Input::CallbackStatus& callback) {
+                    SetStick(callback, index, tas_uuid);
+                },
+        });
    }
 }

@@ -440,7 +451,7 @@ void EmulatedController::SetButtonParam(std::size_t index, Common::ParamPackage
    if (index >= button_params.size()) {
        return;
    }
-    button_params[index] = param;
+    button_params[index] = std::move(param);
    ReloadInput();
 }

@@ -448,7 +459,7 @@ void EmulatedController::SetStickParam(std::size_t index, Common::ParamPackage p
    if (index >= stick_params.size()) {
        return;
    }
-    stick_params[index] = param;
+    stick_params[index] = std::move(param);
    ReloadInput();
 }

@@ -456,11 +467,11 @@ void EmulatedController::SetMotionParam(std::size_t index, Common::ParamPackage
    if (index >= motion_params.size()) {
        return;
    }
-    motion_params[index] = param;
+    motion_params[index] = std::move(param);
    ReloadInput();
 }

-void EmulatedController::SetButton(Common::Input::CallbackStatus callback, std::size_t index,
+void EmulatedController::SetButton(const Common::Input::CallbackStatus& callback, std::size_t index,
                                   Common::UUID uuid) {
    if (index >= controller.button_values.size()) {
        return;
@@ -600,7 +611,7 @@ void EmulatedController::SetButton(Common::Input::CallbackStatus callback, std::
    TriggerOnChange(ControllerTriggerType::Button, true);
 }

-void EmulatedController::SetStick(Common::Input::CallbackStatus callback, std::size_t index,
+void EmulatedController::SetStick(const Common::Input::CallbackStatus& callback, std::size_t index,
                                  Common::UUID uuid) {
    if (index >= controller.stick_values.size()) {
        return;
@@ -650,8 +661,8 @@ void EmulatedController::SetStick(Common::Input::CallbackStatus callback, std::s
    TriggerOnChange(ControllerTriggerType::Stick, true);
 }

-void EmulatedController::SetTrigger(Common::Input::CallbackStatus callback, std::size_t index,
-                                    Common::UUID uuid) {
+void EmulatedController::SetTrigger(const Common::Input::CallbackStatus& callback,
+                                    std::size_t index, Common::UUID uuid) {
    if (index >= controller.trigger_values.size()) {
        return;
    }
@@ -659,7 +670,7 @@ void EmulatedController::SetTrigger(Common::Input::CallbackStatus callback, std:
    const auto trigger_value = TransformToTrigger(callback);

    // Only read trigger values that have the same uuid or are pressed once
-    if (controller.stick_values[index].uuid != uuid) {
+    if (controller.trigger_values[index].uuid != uuid) {
        if (!trigger_value.pressed.value) {
            return;
        }
@@ -675,7 +686,7 @@ void EmulatedController::SetTrigger(Common::Input::CallbackStatus callback, std:
        return;
    }

-    const auto trigger = controller.trigger_values[index];
+    const auto& trigger = controller.trigger_values[index];

    switch (index) {
    case Settings::NativeTrigger::LTrigger:
@@ -692,7 +703,8 @@ void EmulatedController::SetTrigger(Common::Input::CallbackStatus callback, std:
    TriggerOnChange(ControllerTriggerType::Trigger, true);
 }

-void EmulatedController::SetMotion(Common::Input::CallbackStatus callback, std::size_t index) {
+void EmulatedController::SetMotion(const Common::Input::CallbackStatus& callback,
+                                   std::size_t index) {
    if (index >= controller.motion_values.size()) {
        return;
    }
@@ -730,7 +742,8 @@ void EmulatedController::SetMotion(Common::Input::CallbackStatus callback, std::
    TriggerOnChange(ControllerTriggerType::Motion, true);
 }

-void EmulatedController::SetBattery(Common::Input::CallbackStatus callback, std::size_t index) {
+void EmulatedController::SetBattery(const Common::Input::CallbackStatus& callback,
+                                    std::size_t index) {
    if (index >= controller.battery_values.size()) {
        return;
    }
@@ -830,23 +843,18 @@ bool EmulatedController::SetVibration(std::size_t device_index, VibrationValue v
 }

 bool EmulatedController::TestVibration(std::size_t device_index) {
-    if (device_index >= output_devices.size()) {
-        return false;
-    }
-    if (!output_devices[device_index]) {
-        return false;
-    }
-
-    // Send a slight vibration to test for rumble support
-    constexpr Common::Input::VibrationStatus status = {
+    static constexpr VibrationValue test_vibration = {
        .low_amplitude = 0.001f,
        .low_frequency = 160.0f,
        .high_amplitude = 0.001f,
        .high_frequency = 320.0f,
-        .type = Common::Input::VibrationAmplificationType::Linear,
    };
-    return output_devices[device_index]->SetVibration(status) ==
-           Common::Input::VibrationError::None;
+
+    // Send a slight vibration to test for rumble support
+    SetVibration(device_index, test_vibration);
+
+    // Stop any vibration and return the result
+    return SetVibration(device_index, DEFAULT_VIBRATION_VALUE);
 }

 void EmulatedController::SetLedPattern() {
@@ -1110,7 +1118,7 @@ void EmulatedController::TriggerOnChange(ControllerTriggerType type, bool is_npa

 int EmulatedController::SetCallback(ControllerUpdateCallback update_callback) {
    std::lock_guard lock{mutex};
-    callback_list.insert_or_assign(last_callback_key, update_callback);
+    callback_list.insert_or_assign(last_callback_key, std::move(update_callback));
    return last_callback_key++;
 }

--- a/src/core/hid/emulated_controller.h
+++ b/src/core/hid/emulated_controller.h
@@ -328,35 +328,38 @@ private:
     * @param callback A CallbackStatus containing the button status
     * @param index Button ID of the to be updated
     */
-    void SetButton(Common::Input::CallbackStatus callback, std::size_t index, Common::UUID uuid);
+    void SetButton(const Common::Input::CallbackStatus& callback, std::size_t index,
+                   Common::UUID uuid);

    /**
     * Updates the analog stick status of the controller
     * @param callback A CallbackStatus containing the analog stick status
     * @param index stick ID of the to be updated
     */
-    void SetStick(Common::Input::CallbackStatus callback, std::size_t index, Common::UUID uuid);
+    void SetStick(const Common::Input::CallbackStatus& callback, std::size_t index,
+                  Common::UUID uuid);

    /**
     * Updates the trigger status of the controller
     * @param callback A CallbackStatus containing the trigger status
     * @param index trigger ID of the to be updated
     */
-    void SetTrigger(Common::Input::CallbackStatus callback, std::size_t index, Common::UUID uuid);
+    void SetTrigger(const Common::Input::CallbackStatus& callback, std::size_t index,
+                    Common::UUID uuid);

    /**
     * Updates the motion status of the controller
     * @param callback A CallbackStatus containing gyro and accelerometer data
     * @param index motion ID of the to be updated
     */
-    void SetMotion(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetMotion(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Updates the battery status of the controller
     * @param callback A CallbackStatus containing the battery status
     * @param index Button ID of the to be updated
     */
-    void SetBattery(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetBattery(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Triggers a callback that something has changed on the controller status
--- a/src/core/hid/emulated_devices.cpp
+++ b/src/core/hid/emulated_devices.cpp
@@ -70,50 +70,55 @@ void EmulatedDevices::ReloadInput() {
        if (!mouse_button_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback button_callback{
-            [this, index](Common::Input::CallbackStatus callback) {
-                SetMouseButton(callback, index);
-            }};
-        mouse_button_devices[index]->SetCallback(button_callback);
+        mouse_button_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetMouseButton(callback, index);
+                },
+        });
    }

    for (std::size_t index = 0; index < mouse_analog_devices.size(); ++index) {
        if (!mouse_analog_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback button_callback{
-            [this, index](Common::Input::CallbackStatus callback) {
-                SetMouseAnalog(callback, index);
-            }};
-        mouse_analog_devices[index]->SetCallback(button_callback);
+        mouse_analog_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetMouseAnalog(callback, index);
+                },
+        });
    }

    if (mouse_stick_device) {
-        Common::Input::InputCallback button_callback{
-            [this](Common::Input::CallbackStatus callback) { SetMouseStick(callback); }};
-        mouse_stick_device->SetCallback(button_callback);
+        mouse_stick_device->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback) { SetMouseStick(callback); },
+        });
    }

    for (std::size_t index = 0; index < keyboard_devices.size(); ++index) {
        if (!keyboard_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback button_callback{
-            [this, index](Common::Input::CallbackStatus callback) {
-                SetKeyboardButton(callback, index);
-            }};
-        keyboard_devices[index]->SetCallback(button_callback);
+        keyboard_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetKeyboardButton(callback, index);
+                },
+        });
    }

    for (std::size_t index = 0; index < keyboard_modifier_devices.size(); ++index) {
        if (!keyboard_modifier_devices[index]) {
            continue;
        }
-        Common::Input::InputCallback button_callback{
-            [this, index](Common::Input::CallbackStatus callback) {
-                SetKeyboardModifier(callback, index);
-            }};
-        keyboard_modifier_devices[index]->SetCallback(button_callback);
+        keyboard_modifier_devices[index]->SetCallback({
+            .on_change =
+                [this, index](const Common::Input::CallbackStatus& callback) {
+                    SetKeyboardModifier(callback, index);
+                },
+        });
    }
 }

@@ -159,7 +164,8 @@ void EmulatedDevices::RestoreConfig() {
    ReloadFromSettings();
 }

-void EmulatedDevices::SetKeyboardButton(Common::Input::CallbackStatus callback, std::size_t index) {
+void EmulatedDevices::SetKeyboardButton(const Common::Input::CallbackStatus& callback,
+                                        std::size_t index) {
    if (index >= device_status.keyboard_values.size()) {
        return;
    }
@@ -216,7 +222,7 @@ void EmulatedDevices::UpdateKey(std::size_t key_index, bool status) {
    }
 }

-void EmulatedDevices::SetKeyboardModifier(Common::Input::CallbackStatus callback,
+void EmulatedDevices::SetKeyboardModifier(const Common::Input::CallbackStatus& callback,
                                          std::size_t index) {
    if (index >= device_status.keyboard_moddifier_values.size()) {
        return;
@@ -286,7 +292,8 @@ void EmulatedDevices::SetKeyboardModifier(Common::Input::CallbackStatus callback
    TriggerOnChange(DeviceTriggerType::KeyboardModdifier);
 }

-void EmulatedDevices::SetMouseButton(Common::Input::CallbackStatus callback, std::size_t index) {
+void EmulatedDevices::SetMouseButton(const Common::Input::CallbackStatus& callback,
+                                     std::size_t index) {
    if (index >= device_status.mouse_button_values.size()) {
        return;
    }
@@ -347,7 +354,8 @@ void EmulatedDevices::SetMouseButton(Common::Input::CallbackStatus callback, std
    TriggerOnChange(DeviceTriggerType::Mouse);
 }

-void EmulatedDevices::SetMouseAnalog(Common::Input::CallbackStatus callback, std::size_t index) {
+void EmulatedDevices::SetMouseAnalog(const Common::Input::CallbackStatus& callback,
+                                     std::size_t index) {
    if (index >= device_status.mouse_analog_values.size()) {
        return;
    }
@@ -374,7 +382,7 @@ void EmulatedDevices::SetMouseAnalog(Common::Input::CallbackStatus callback, std
    TriggerOnChange(DeviceTriggerType::Mouse);
 }

-void EmulatedDevices::SetMouseStick(Common::Input::CallbackStatus callback) {
+void EmulatedDevices::SetMouseStick(const Common::Input::CallbackStatus& callback) {
    std::lock_guard lock{mutex};
    const auto touch_value = TransformToTouch(callback);

@@ -435,7 +443,7 @@ void EmulatedDevices::TriggerOnChange(DeviceTriggerType type) {

 int EmulatedDevices::SetCallback(InterfaceUpdateCallback update_callback) {
    std::lock_guard lock{mutex};
-    callback_list.insert_or_assign(last_callback_key, update_callback);
+    callback_list.insert_or_assign(last_callback_key, std::move(update_callback));
    return last_callback_key++;
 }

--- a/src/core/hid/emulated_devices.h
+++ b/src/core/hid/emulated_devices.h
@@ -156,35 +156,34 @@ private:
     * @param callback A CallbackStatus containing the key status
     * @param index key ID to be updated
     */
-    void SetKeyboardButton(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetKeyboardButton(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Updates the keyboard status of the keyboard device
     * @param callback A CallbackStatus containing the modifier key status
     * @param index modifier key ID to be updated
     */
-    void SetKeyboardModifier(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetKeyboardModifier(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Updates the mouse button status of the mouse device
     * @param callback A CallbackStatus containing the button status
     * @param index Button ID to be updated
     */
-    void SetMouseButton(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetMouseButton(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Updates the mouse wheel status of the mouse device
     * @param callback A CallbackStatus containing the wheel status
     * @param index wheel ID to be updated
     */
-    void SetMouseAnalog(Common::Input::CallbackStatus callback, std::size_t index);
+    void SetMouseAnalog(const Common::Input::CallbackStatus& callback, std::size_t index);

    /**
     * Updates the mouse position status of the mouse device
     * @param callback A CallbackStatus containing the position status
-     * @param index stick ID to be updated
     */
-    void SetMouseStick(Common::Input::CallbackStatus callback);
+    void SetMouseStick(const Common::Input::CallbackStatus& callback);

    /**
     * Triggers a callback that something has changed on the device status
--- a/src/core/hid/hid_core.cpp
+++ b/src/core/hid/hid_core.cpp
@@ -145,6 +145,16 @@ NpadIdType HIDCore::GetFirstNpadId() const {
    return NpadIdType::Player1;
 }

+NpadIdType HIDCore::GetFirstDisconnectedNpadId() const {
+    for (std::size_t player_index = 0; player_index < available_controllers; ++player_index) {
+        const auto* const controller = GetEmulatedControllerByIndex(player_index);
+        if (!controller->IsConnected()) {
+            return controller->GetNpadIdType();
+        }
+    }
+    return NpadIdType::Player1;
+}
+
 void HIDCore::EnableAllControllerConfiguration() {
    player_1->EnableConfiguration();
    player_2->EnableConfiguration();
--- a/src/core/hid/hid_core.h
+++ b/src/core/hid/hid_core.h
@@ -45,6 +45,9 @@ public:
    /// Returns the first connected npad id
    NpadIdType GetFirstNpadId() const;

+    /// Returns the first disconnected npad id
+    NpadIdType GetFirstDisconnectedNpadId() const;
+
    /// Sets all emulated controllers into configuring mode.
    void EnableAllControllerConfiguration();

--- a/src/core/hid/hid_types.h
+++ b/src/core/hid/hid_types.h
@@ -496,6 +496,13 @@ struct VibrationValue {
 };
 static_assert(sizeof(VibrationValue) == 0x10, "VibrationValue has incorrect size.");

+constexpr VibrationValue DEFAULT_VIBRATION_VALUE{
+    .low_amplitude = 0.0f,
+    .low_frequency = 160.0f,
+    .high_amplitude = 0.0f,
+    .high_frequency = 320.0f,
+};
+
 // This is nn::hid::VibrationDeviceInfo
 struct VibrationDeviceInfo {
    VibrationDeviceType type{};
--- a/src/core/hle/kernel/init/init_slab_setup.cpp
+++ b/src/core/hle/kernel/init/init_slab_setup.cpp
@@ -9,6 +9,7 @@
 #include "core/core.h"
 #include "core/hardware_properties.h"
 #include "core/hle/kernel/init/init_slab_setup.h"
+#include "core/hle/kernel/k_code_memory.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_memory_layout.h"
 #include "core/hle/kernel/k_memory_manager.h"
@@ -32,6 +33,7 @@ namespace Kernel::Init {
    HANDLER(KPort, (SLAB_COUNT(KPort)), ##__VA_ARGS__)                                             \
    HANDLER(KSharedMemory, (SLAB_COUNT(KSharedMemory)), ##__VA_ARGS__)                             \
    HANDLER(KTransferMemory, (SLAB_COUNT(KTransferMemory)), ##__VA_ARGS__)                         \
+    HANDLER(KCodeMemory, (SLAB_COUNT(KCodeMemory)), ##__VA_ARGS__)                                 \
    HANDLER(KSession, (SLAB_COUNT(KSession)), ##__VA_ARGS__)                                       \
    HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__)

--- a/src/core/hle/kernel/k_address_arbiter.cpp
+++ b/src/core/hle/kernel/k_address_arbiter.cpp
@@ -8,6 +8,7 @@
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
@@ -28,7 +29,7 @@ bool ReadFromUser(Core::System& system, s32* out, VAddr address) {

 bool DecrementIfLessThan(Core::System& system, s32* out, VAddr address, s32 value) {
    auto& monitor = system.Monitor();
-    const auto current_core = system.CurrentCoreIndex();
+    const auto current_core = system.Kernel().CurrentPhysicalCoreIndex();

    // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
    // TODO(bunnei): We should call CanAccessAtomic(..) here.
@@ -58,7 +59,7 @@ bool DecrementIfLessThan(Core::System& system, s32* out, VAddr address, s32 valu

 bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32 new_value) {
    auto& monitor = system.Monitor();
-    const auto current_core = system.CurrentCoreIndex();
+    const auto current_core = system.Kernel().CurrentPhysicalCoreIndex();

    // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
    // TODO(bunnei): We should call CanAccessAtomic(..) here.
@@ -85,6 +86,27 @@ bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32
    return true;
 }

+class ThreadQueueImplForKAddressArbiter final : public KThreadQueue {
+public:
+    explicit ThreadQueueImplForKAddressArbiter(KernelCore& kernel_, KAddressArbiter::ThreadTree* t)
+        : KThreadQueue(kernel_), m_tree(t) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // If the thread is waiting on an address arbiter, remove it from the tree.
+        if (waiting_thread->IsWaitingForAddressArbiter()) {
+            m_tree->erase(m_tree->iterator_to(*waiting_thread));
+            waiting_thread->ClearAddressArbiter();
+        }
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+
+private:
+    KAddressArbiter::ThreadTree* m_tree;
+};
+
 } // namespace

 ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) {
@@ -96,14 +118,14 @@ ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) {
        auto it = thread_tree.nfind_light({addr, -1});
        while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
               (it->GetAddressArbiterKey() == addr)) {
+            // End the thread's wait.
            KThread* target_thread = std::addressof(*it);
-            target_thread->SetSyncedObject(nullptr, ResultSuccess);
+            target_thread->EndWait(ResultSuccess);

            ASSERT(target_thread->IsWaitingForAddressArbiter());
-            target_thread->Wakeup();
+            target_thread->ClearAddressArbiter();

            it = thread_tree.erase(it);
-            target_thread->ClearAddressArbiter();
            ++num_waiters;
        }
    }
@@ -129,14 +151,14 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
        auto it = thread_tree.nfind_light({addr, -1});
        while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
               (it->GetAddressArbiterKey() == addr)) {
+            // End the thread's wait.
            KThread* target_thread = std::addressof(*it);
-            target_thread->SetSyncedObject(nullptr, ResultSuccess);
+            target_thread->EndWait(ResultSuccess);

            ASSERT(target_thread->IsWaitingForAddressArbiter());
-            target_thread->Wakeup();
+            target_thread->ClearAddressArbiter();

            it = thread_tree.erase(it);
-            target_thread->ClearAddressArbiter();
            ++num_waiters;
        }
    }
@@ -197,14 +219,14 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32

        while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
               (it->GetAddressArbiterKey() == addr)) {
+            // End the thread's wait.
            KThread* target_thread = std::addressof(*it);
-            target_thread->SetSyncedObject(nullptr, ResultSuccess);
+            target_thread->EndWait(ResultSuccess);

            ASSERT(target_thread->IsWaitingForAddressArbiter());
-            target_thread->Wakeup();
+            target_thread->ClearAddressArbiter();

            it = thread_tree.erase(it);
-            target_thread->ClearAddressArbiter();
            ++num_waiters;
        }
    }
@@ -214,6 +236,7 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
 ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement, s64 timeout) {
    // Prepare to wait.
    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree));

    {
        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
@@ -224,9 +247,6 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
            return ResultTerminationRequested;
        }

-        // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
-
        // Read the value from userspace.
        s32 user_value{};
        bool succeeded{};
@@ -256,31 +276,20 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
        // Set the arbiter.
        cur_thread->SetAddressArbiter(&thread_tree, addr);
        thread_tree.insert(*cur_thread);
-        cur_thread->SetState(ThreadState::Waiting);
+
+        // Wait for the thread to finish.
+        cur_thread->BeginWait(std::addressof(wait_queue));
        cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
    }

-    // Cancel the timer wait.
-    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-
-    // Remove from the address arbiter.
-    {
-        KScopedSchedulerLock sl(kernel);
-
-        if (cur_thread->IsWaitingForAddressArbiter()) {
-            thread_tree.erase(thread_tree.iterator_to(*cur_thread));
-            cur_thread->ClearAddressArbiter();
-        }
-    }
-
    // Get the result.
-    KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(&dummy);
+    return cur_thread->GetWaitResult();
 }

 ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
    // Prepare to wait.
    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree));

    {
        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
@@ -291,9 +300,6 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
            return ResultTerminationRequested;
        }

-        // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
-
        // Read the value from userspace.
        s32 user_value{};
        if (!ReadFromUser(system, &user_value, addr)) {
@@ -316,26 +322,14 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
        // Set the arbiter.
        cur_thread->SetAddressArbiter(&thread_tree, addr);
        thread_tree.insert(*cur_thread);
-        cur_thread->SetState(ThreadState::Waiting);
+
+        // Wait for the thread to finish.
+        cur_thread->BeginWait(std::addressof(wait_queue));
        cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
    }

-    // Cancel the timer wait.
-    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-
-    // Remove from the address arbiter.
-    {
-        KScopedSchedulerLock sl(kernel);
-
-        if (cur_thread->IsWaitingForAddressArbiter()) {
-            thread_tree.erase(thread_tree.iterator_to(*cur_thread));
-            cur_thread->ClearAddressArbiter();
-        }
-    }
-
    // Get the result.
-    KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(&dummy);
+    return cur_thread->GetWaitResult();
 }

 } // namespace Kernel
--- a/src/core/hle/kernel/k_auto_object.h
+++ b/src/core/hle/kernel/k_auto_object.h
@@ -170,6 +170,10 @@ public:
        }
    }

+    const std::string& GetName() const {
+        return name;
+    }
+
 private:
    void RegisterWithKernel();
    void UnregisterWithKernel();
--- a/src/core/hle/kernel/k_class_token.cpp
+++ b/src/core/hle/kernel/k_class_token.cpp
@@ -6,6 +6,7 @@
 #include "core/hle/kernel/k_class_token.h"
 #include "core/hle/kernel/k_client_port.h"
 #include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_code_memory.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_port.h"
 #include "core/hle/kernel/k_process.h"
@@ -48,7 +49,7 @@ static_assert(ClassToken<KWritableEvent> == 0b10001001'00000000);
 static_assert(ClassToken<KTransferMemory> == 0b10010001'00000000);
 // static_assert(ClassToken<KDeviceAddressSpace> == 0b01100001'00000000);
 // static_assert(ClassToken<KSessionRequest> == 0b10100001'00000000);
-// static_assert(ClassToken<KCodeMemory> == 0b11000001'00000000);
+static_assert(ClassToken<KCodeMemory> == 0b11000001'00000000);

 // Ensure that the token hierarchy is correct.

@@ -79,7 +80,7 @@ static_assert(ClassToken<KWritableEvent> == ((0b10001001 << 8) | ClassToken<KAut
 static_assert(ClassToken<KTransferMemory> == ((0b10010001 << 8) | ClassToken<KAutoObject>));
 // static_assert(ClassToken<KDeviceAddressSpace> == ((0b01100001 << 8) | ClassToken<KAutoObject>));
 // static_assert(ClassToken<KSessionRequest> == ((0b10100001 << 8) | ClassToken<KAutoObject>));
-// static_assert(ClassToken<KCodeMemory> == ((0b11000001 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KCodeMemory> == ((0b11000001 << 8) | ClassToken<KAutoObject>));

 // Ensure that the token hierarchy reflects the class hierarchy.

--- a/src/core/hle/kernel/k_code_memory.cpp
+++ b/src/core/hle/kernel/k_code_memory.cpp
@@ -0,0 +1,146 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "core/device_memory.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_code_memory.h"
+#include "core/hle/kernel/k_light_lock.h"
+#include "core/hle/kernel/k_memory_block.h"
+#include "core/hle/kernel/k_page_linked_list.h"
+#include "core/hle/kernel/k_page_table.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/kernel/svc_types.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+KCodeMemory::KCodeMemory(KernelCore& kernel_)
+    : KAutoObjectWithSlabHeapAndContainer{kernel_}, m_lock(kernel_) {}
+
+ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr, size_t size) {
+    // Set members.
+    m_owner = kernel.CurrentProcess();
+
+    // Get the owner page table.
+    auto& page_table = m_owner->PageTable();
+
+    // Construct the page group.
+    KMemoryInfo kBlockInfo = page_table.QueryInfo(addr);
+    m_page_group = KPageLinkedList(kBlockInfo.GetAddress(), kBlockInfo.GetNumPages());
+
+    // Lock the memory.
+    R_TRY(page_table.LockForCodeMemory(addr, size))
+
+    // Clear the memory.
+    for (const auto& block : m_page_group.Nodes()) {
+        std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize());
+    }
+
+    // Set remaining tracking members.
+    m_address = addr;
+    m_is_initialized = true;
+    m_is_owner_mapped = false;
+    m_is_mapped = false;
+
+    // We succeeded.
+    return ResultSuccess;
+}
+
+void KCodeMemory::Finalize() {
+    // Unlock.
+    if (!m_is_mapped && !m_is_owner_mapped) {
+        const size_t size = m_page_group.GetNumPages() * PageSize;
+        m_owner->PageTable().UnlockForCodeMemory(m_address, size);
+    }
+}
+
+ResultCode KCodeMemory::Map(VAddr address, size_t size) {
+    // Validate the size.
+    R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
+
+    // Lock ourselves.
+    KScopedLightLock lk(m_lock);
+
+    // Ensure we're not already mapped.
+    R_UNLESS(!m_is_mapped, ResultInvalidState);
+
+    // Map the memory.
+    R_TRY(kernel.CurrentProcess()->PageTable().MapPages(
+        address, m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite));
+
+    // Mark ourselves as mapped.
+    m_is_mapped = true;
+
+    return ResultSuccess;
+}
+
+ResultCode KCodeMemory::Unmap(VAddr address, size_t size) {
+    // Validate the size.
+    R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
+
+    // Lock ourselves.
+    KScopedLightLock lk(m_lock);
+
+    // Unmap the memory.
+    R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, m_page_group,
+                                                          KMemoryState::CodeOut));
+
+    // Mark ourselves as unmapped.
+    m_is_mapped = false;
+
+    return ResultSuccess;
+}
+
+ResultCode KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission perm) {
+    // Validate the size.
+    R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
+
+    // Lock ourselves.
+    KScopedLightLock lk(m_lock);
+
+    // Ensure we're not already mapped.
+    R_UNLESS(!m_is_owner_mapped, ResultInvalidState);
+
+    // Convert the memory permission.
+    KMemoryPermission k_perm{};
+    switch (perm) {
+    case Svc::MemoryPermission::Read:
+        k_perm = KMemoryPermission::UserRead;
+        break;
+    case Svc::MemoryPermission::ReadExecute:
+        k_perm = KMemoryPermission::UserReadExecute;
+        break;
+    default:
+        break;
+    }
+
+    // Map the memory.
+    R_TRY(
+        m_owner->PageTable().MapPages(address, m_page_group, KMemoryState::GeneratedCode, k_perm));
+
+    // Mark ourselves as mapped.
+    m_is_owner_mapped = true;
+
+    return ResultSuccess;
+}
+
+ResultCode KCodeMemory::UnmapFromOwner(VAddr address, size_t size) {
+    // Validate the size.
+    R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize);
+
+    // Lock ourselves.
+    KScopedLightLock lk(m_lock);
+
+    // Unmap the memory.
+    R_TRY(m_owner->PageTable().UnmapPages(address, m_page_group, KMemoryState::GeneratedCode));
+
+    // Mark ourselves as unmapped.
+    m_is_owner_mapped = false;
+
+    return ResultSuccess;
+}
+
+} // namespace Kernel
--- a/src/core/hle/kernel/k_code_memory.h
+++ b/src/core/hle/kernel/k_code_memory.h
@@ -0,0 +1,66 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/device_memory.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_light_lock.h"
+#include "core/hle/kernel/k_page_linked_list.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/kernel/svc_types.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+enum class CodeMemoryOperation : u32 {
+    Map = 0,
+    MapToOwner = 1,
+    Unmap = 2,
+    UnmapFromOwner = 3,
+};
+
+class KCodeMemory final
+    : public KAutoObjectWithSlabHeapAndContainer<KCodeMemory, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KCodeMemory, KAutoObject);
+
+public:
+    explicit KCodeMemory(KernelCore& kernel_);
+
+    ResultCode Initialize(Core::DeviceMemory& device_memory, VAddr address, size_t size);
+    void Finalize();
+
+    ResultCode Map(VAddr address, size_t size);
+    ResultCode Unmap(VAddr address, size_t size);
+    ResultCode MapToOwner(VAddr address, size_t size, Svc::MemoryPermission perm);
+    ResultCode UnmapFromOwner(VAddr address, size_t size);
+
+    bool IsInitialized() const {
+        return m_is_initialized;
+    }
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+
+    KProcess* GetOwner() const {
+        return m_owner;
+    }
+    VAddr GetSourceAddress() const {
+        return m_address;
+    }
+    size_t GetSize() const {
+        return m_is_initialized ? m_page_group.GetNumPages() * PageSize : 0;
+    }
+
+private:
+    KPageLinkedList m_page_group{};
+    KProcess* m_owner{};
+    VAddr m_address{};
+    KLightLock m_lock;
+    bool m_is_initialized{};
+    bool m_is_owner_mapped{};
+    bool m_is_mapped{};
+};
+
+} // namespace Kernel
--- a/src/core/hle/kernel/k_condition_variable.cpp
+++ b/src/core/hle/kernel/k_condition_variable.cpp
@@ -11,6 +11,7 @@
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_common.h"
 #include "core/hle/kernel/svc_results.h"
@@ -33,7 +34,7 @@ bool WriteToUser(Core::System& system, VAddr address, const u32* p) {
 bool UpdateLockAtomic(Core::System& system, u32* out, VAddr address, u32 if_zero,
                      u32 new_orr_mask) {
    auto& monitor = system.Monitor();
-    const auto current_core = system.CurrentCoreIndex();
+    const auto current_core = system.Kernel().CurrentPhysicalCoreIndex();

    // Load the value from the address.
    const auto expected = monitor.ExclusiveRead32(current_core, address);
@@ -57,6 +58,48 @@ bool UpdateLockAtomic(Core::System& system, u32* out, VAddr address, u32 if_zero
    return true;
 }

+class ThreadQueueImplForKConditionVariableWaitForAddress final : public KThreadQueue {
+public:
+    explicit ThreadQueueImplForKConditionVariableWaitForAddress(KernelCore& kernel_)
+        : KThreadQueue(kernel_) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Remove the thread as a waiter from its owner.
+        waiting_thread->GetLockOwner()->RemoveWaiter(waiting_thread);
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+};
+
+class ThreadQueueImplForKConditionVariableWaitConditionVariable final : public KThreadQueue {
+private:
+    KConditionVariable::ThreadTree* m_tree;
+
+public:
+    explicit ThreadQueueImplForKConditionVariableWaitConditionVariable(
+        KernelCore& kernel_, KConditionVariable::ThreadTree* t)
+        : KThreadQueue(kernel_), m_tree(t) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Remove the thread as a waiter from its owner.
+        if (KThread* owner = waiting_thread->GetLockOwner(); owner != nullptr) {
+            owner->RemoveWaiter(waiting_thread);
+        }
+
+        // If the thread is waiting on a condvar, remove it from the tree.
+        if (waiting_thread->IsWaitingForConditionVariable()) {
+            m_tree->erase(m_tree->iterator_to(*waiting_thread));
+            waiting_thread->ClearConditionVariable();
+        }
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+};
+
 } // namespace

 KConditionVariable::KConditionVariable(Core::System& system_)
@@ -78,84 +121,77 @@ ResultCode KConditionVariable::SignalToAddress(VAddr addr) {

        // Determine the next tag.
        u32 next_value{};
-        if (next_owner_thread) {
+        if (next_owner_thread != nullptr) {
            next_value = next_owner_thread->GetAddressKeyValue();
            if (num_waiters > 1) {
                next_value |= Svc::HandleWaitMask;
            }

-            next_owner_thread->SetSyncedObject(nullptr, ResultSuccess);
-            next_owner_thread->Wakeup();
-        }
-
-        // Write the value to userspace.
-        if (!WriteToUser(system, addr, std::addressof(next_value))) {
-            if (next_owner_thread) {
-                next_owner_thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory);
+            // Write the value to userspace.
+            ResultCode result{ResultSuccess};
+            if (WriteToUser(system, addr, std::addressof(next_value))) [[likely]] {
+                result = ResultSuccess;
+            } else {
+                result = ResultInvalidCurrentMemory;
            }

-            return ResultInvalidCurrentMemory;
+            // Signal the next owner thread.
+            next_owner_thread->EndWait(result);
+            return result;
+        } else {
+            // Just write the value to userspace.
+            R_UNLESS(WriteToUser(system, addr, std::addressof(next_value)),
+                     ResultInvalidCurrentMemory);
+
+            return ResultSuccess;
        }
    }
-
-    return ResultSuccess;
 }

 ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 value) {
    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    ThreadQueueImplForKConditionVariableWaitForAddress wait_queue(kernel);

    // Wait for the address.
-    {
-        KScopedAutoObject<KThread> owner_thread;
-        ASSERT(owner_thread.IsNull());
-        {
-            KScopedSchedulerLock sl(kernel);
-            cur_thread->SetSyncedObject(nullptr, ResultSuccess);
-
-            // Check if the thread should terminate.
-            R_UNLESS(!cur_thread->IsTerminationRequested(), ResultTerminationRequested);
-
-            {
-                // Read the tag from userspace.
-                u32 test_tag{};
-                R_UNLESS(ReadFromUser(system, std::addressof(test_tag), addr),
-                         ResultInvalidCurrentMemory);
-
-                // If the tag isn't the handle (with wait mask), we're done.
-                R_UNLESS(test_tag == (handle | Svc::HandleWaitMask), ResultSuccess);
-
-                // Get the lock owner thread.
-                owner_thread =
-                    kernel.CurrentProcess()->GetHandleTable().GetObjectWithoutPseudoHandle<KThread>(
-                        handle);
-                R_UNLESS(owner_thread.IsNotNull(), ResultInvalidHandle);
-
-                // Update the lock.
-                cur_thread->SetAddressKey(addr, value);
-                owner_thread->AddWaiter(cur_thread);
-                cur_thread->SetState(ThreadState::Waiting);
-                cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar);
-                cur_thread->SetMutexWaitAddressForDebugging(addr);
-            }
-        }
-        ASSERT(owner_thread.IsNotNull());
-    }
-
-    // Remove the thread as a waiter from the lock owner.
+    KThread* owner_thread{};
    {
        KScopedSchedulerLock sl(kernel);
-        KThread* owner_thread = cur_thread->GetLockOwner();
-        if (owner_thread != nullptr) {
-            owner_thread->RemoveWaiter(cur_thread);
-        }
+
+        // Check if the thread should terminate.
+        R_UNLESS(!cur_thread->IsTerminationRequested(), ResultTerminationRequested);
+
+        // Read the tag from userspace.
+        u32 test_tag{};
+        R_UNLESS(ReadFromUser(system, std::addressof(test_tag), addr), ResultInvalidCurrentMemory);
+
+        // If the tag isn't the handle (with wait mask), we're done.
+        R_SUCCEED_IF(test_tag != (handle | Svc::HandleWaitMask));
+
+        // Get the lock owner thread.
+        owner_thread = kernel.CurrentProcess()
+                           ->GetHandleTable()
+                           .GetObjectWithoutPseudoHandle<KThread>(handle)
+                           .ReleasePointerUnsafe();
+        R_UNLESS(owner_thread != nullptr, ResultInvalidHandle);
+
+        // Update the lock.
+        cur_thread->SetAddressKey(addr, value);
+        owner_thread->AddWaiter(cur_thread);
+
+        // Begin waiting.
+        cur_thread->BeginWait(std::addressof(wait_queue));
+        cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar);
+        cur_thread->SetMutexWaitAddressForDebugging(addr);
    }

+    // Close our reference to the owner thread, now that the wait is over.
+    owner_thread->Close();
+
    // Get the wait result.
-    KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(std::addressof(dummy));
+    return cur_thread->GetWaitResult();
 }

-KThread* KConditionVariable::SignalImpl(KThread* thread) {
+void KConditionVariable::SignalImpl(KThread* thread) {
    // Check pre-conditions.
    ASSERT(kernel.GlobalSchedulerContext().IsLocked());

@@ -169,18 +205,16 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) {
        // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
        // TODO(bunnei): We should call CanAccessAtomic(..) here.
        can_access = true;
-        if (can_access) {
+        if (can_access) [[likely]] {
            UpdateLockAtomic(system, std::addressof(prev_tag), address, own_tag,
                             Svc::HandleWaitMask);
        }
    }

-    KThread* thread_to_close = nullptr;
-    if (can_access) {
+    if (can_access) [[likely]] {
        if (prev_tag == Svc::InvalidHandle) {
            // If nobody held the lock previously, we're all good.
-            thread->SetSyncedObject(nullptr, ResultSuccess);
-            thread->Wakeup();
+            thread->EndWait(ResultSuccess);
        } else {
            // Get the previous owner.
            KThread* owner_thread = kernel.CurrentProcess()
@@ -189,33 +223,22 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) {
                                            static_cast<Handle>(prev_tag & ~Svc::HandleWaitMask))
                                        .ReleasePointerUnsafe();

-            if (owner_thread) {
+            if (owner_thread) [[likely]] {
                // Add the thread as a waiter on the owner.
                owner_thread->AddWaiter(thread);
-                thread_to_close = owner_thread;
+                owner_thread->Close();
            } else {
                // The lock was tagged with a thread that doesn't exist.
-                thread->SetSyncedObject(nullptr, ResultInvalidState);
-                thread->Wakeup();
+                thread->EndWait(ResultInvalidState);
            }
        }
    } else {
        // If the address wasn't accessible, note so.
-        thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory);
-        thread->Wakeup();
+        thread->EndWait(ResultInvalidCurrentMemory);
    }
-
-    return thread_to_close;
 }

 void KConditionVariable::Signal(u64 cv_key, s32 count) {
-    // Prepare for signaling.
-    constexpr int MaxThreads = 16;
-
-    KLinkedList<KThread> thread_list{kernel};
-    std::array<KThread*, MaxThreads> thread_array;
-    s32 num_to_close{};
-
    // Perform signaling.
    s32 num_waiters{};
    {
@@ -226,14 +249,7 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
               (it->GetConditionVariableKey() == cv_key)) {
            KThread* target_thread = std::addressof(*it);

-            if (KThread* thread = SignalImpl(target_thread); thread != nullptr) {
-                if (num_to_close < MaxThreads) {
-                    thread_array[num_to_close++] = thread;
-                } else {
-                    thread_list.push_back(*thread);
-                }
-            }
-
+            this->SignalImpl(target_thread);
            it = thread_tree.erase(it);
            target_thread->ClearConditionVariable();
            ++num_waiters;
@@ -245,27 +261,16 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
            WriteToUser(system, cv_key, std::addressof(has_waiter_flag));
        }
    }
-
-    // Close threads in the array.
-    for (auto i = 0; i < num_to_close; ++i) {
-        thread_array[i]->Close();
-    }
-
-    // Close threads in the list.
-    for (auto it = thread_list.begin(); it != thread_list.end(); it = thread_list.erase(it)) {
-        (*it).Close();
-    }
 }

 ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) {
    // Prepare to wait.
-    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* cur_thread = GetCurrentThreadPointer(kernel);
+    ThreadQueueImplForKConditionVariableWaitConditionVariable wait_queue(
+        kernel, std::addressof(thread_tree));

    {
-        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
-
-        // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
+        KScopedSchedulerLockAndSleep slp(kernel, cur_thread, timeout);

        // Check that the thread isn't terminating.
        if (cur_thread->IsTerminationRequested()) {
@@ -290,8 +295,7 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
                }

                // Wake up the next owner.
-                next_owner_thread->SetSyncedObject(nullptr, ResultSuccess);
-                next_owner_thread->Wakeup();
+                next_owner_thread->EndWait(ResultSuccess);
            }

            // Write to the cv key.
@@ -308,40 +312,21 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
            }
        }

+        // If timeout is zero, time out.
+        R_UNLESS(timeout != 0, ResultTimedOut);
+
        // Update condition variable tracking.
-        {
-            cur_thread->SetConditionVariable(std::addressof(thread_tree), addr, key, value);
-            thread_tree.insert(*cur_thread);
-        }
+        cur_thread->SetConditionVariable(std::addressof(thread_tree), addr, key, value);
+        thread_tree.insert(*cur_thread);

-        // If the timeout is non-zero, set the thread as waiting.
-        if (timeout != 0) {
-            cur_thread->SetState(ThreadState::Waiting);
-            cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar);
-            cur_thread->SetMutexWaitAddressForDebugging(addr);
-        }
+        // Begin waiting.
+        cur_thread->BeginWait(std::addressof(wait_queue));
+        cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar);
+        cur_thread->SetMutexWaitAddressForDebugging(addr);
    }

-    // Cancel the timer wait.
-    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-
-    // Remove from the condition variable.
-    {
-        KScopedSchedulerLock sl(kernel);
-
-        if (KThread* owner = cur_thread->GetLockOwner(); owner != nullptr) {
-            owner->RemoveWaiter(cur_thread);
-        }
-
-        if (cur_thread->IsWaitingForConditionVariable()) {
-            thread_tree.erase(thread_tree.iterator_to(*cur_thread));
-            cur_thread->ClearConditionVariable();
-        }
-    }
-
-    // Get the result.
-    KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(std::addressof(dummy));
+    // Get the wait result.
+    return cur_thread->GetWaitResult();
 }

 } // namespace Kernel
--- a/src/core/hle/kernel/k_condition_variable.h
+++ b/src/core/hle/kernel/k_condition_variable.h
@@ -34,7 +34,7 @@ public:
    [[nodiscard]] ResultCode Wait(VAddr addr, u64 key, u32 value, s64 timeout);

 private:
-    [[nodiscard]] KThread* SignalImpl(KThread* thread);
+    void SignalImpl(KThread* thread);

    ThreadTree thread_tree;

--- a/src/core/hle/kernel/k_handle_table.cpp
+++ b/src/core/hle/kernel/k_handle_table.cpp
@@ -13,6 +13,7 @@ ResultCode KHandleTable::Finalize() {
    // Get the table and clear our record of it.
    u16 saved_table_size = 0;
    {
+        KScopedDisableDispatch dd(kernel);
        KScopedSpinLock lk(m_lock);

        std::swap(m_table_size, saved_table_size);
@@ -43,6 +44,7 @@ bool KHandleTable::Remove(Handle handle) {
    // Find the object and free the entry.
    KAutoObject* obj = nullptr;
    {
+        KScopedDisableDispatch dd(kernel);
        KScopedSpinLock lk(m_lock);

        if (this->IsValidHandle(handle)) {
@@ -62,6 +64,7 @@ bool KHandleTable::Remove(Handle handle) {
 }

 ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) {
+    KScopedDisableDispatch dd(kernel);
    KScopedSpinLock lk(m_lock);

    // Never exceed our capacity.
@@ -84,6 +87,7 @@ ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) {
 }

 ResultCode KHandleTable::Reserve(Handle* out_handle) {
+    KScopedDisableDispatch dd(kernel);
    KScopedSpinLock lk(m_lock);

    // Never exceed our capacity.
@@ -94,6 +98,7 @@ ResultCode KHandleTable::Reserve(Handle* out_handle) {
 }

 void KHandleTable::Unreserve(Handle handle) {
+    KScopedDisableDispatch dd(kernel);
    KScopedSpinLock lk(m_lock);

    // Unpack the handle.
@@ -112,6 +117,7 @@ void KHandleTable::Unreserve(Handle handle) {
 }

 void KHandleTable::Register(Handle handle, KAutoObject* obj, u16 type) {
+    KScopedDisableDispatch dd(kernel);
    KScopedSpinLock lk(m_lock);

    // Unpack the handle.
--- a/src/core/hle/kernel/k_handle_table.h
+++ b/src/core/hle/kernel/k_handle_table.h
@@ -68,6 +68,7 @@ public:
    template <typename T = KAutoObject>
    KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const {
        // Lock and look up in table.
+        KScopedDisableDispatch dd(kernel);
        KScopedSpinLock lk(m_lock);

        if constexpr (std::is_same_v<T, KAutoObject>) {
@@ -122,6 +123,7 @@ public:
        size_t num_opened;
        {
            // Lock the table.
+            KScopedDisableDispatch dd(kernel);
            KScopedSpinLock lk(m_lock);
            for (num_opened = 0; num_opened < num_handles; num_opened++) {
                // Get the current handle.
--- a/src/core/hle/kernel/k_light_condition_variable.cpp
+++ b/src/core/hle/kernel/k_light_condition_variable.cpp
@@ -0,0 +1,80 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_light_condition_variable.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_thread_queue.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel {
+
+namespace {
+
+class ThreadQueueImplForKLightConditionVariable final : public KThreadQueue {
+public:
+    ThreadQueueImplForKLightConditionVariable(KernelCore& kernel_, KThread::WaiterList* wl,
+                                              bool term)
+        : KThreadQueue(kernel_), m_wait_list(wl), m_allow_terminating_thread(term) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Only process waits if we're allowed to.
+        if (ResultTerminationRequested == wait_result && m_allow_terminating_thread) {
+            return;
+        }
+
+        // Remove the thread from the waiting thread from the light condition variable.
+        m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread));
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+
+private:
+    KThread::WaiterList* m_wait_list;
+    bool m_allow_terminating_thread;
+};
+
+} // namespace
+
+void KLightConditionVariable::Wait(KLightLock* lock, s64 timeout, bool allow_terminating_thread) {
+    // Create thread queue.
+    KThread* owner = GetCurrentThreadPointer(kernel);
+
+    ThreadQueueImplForKLightConditionVariable wait_queue(kernel, std::addressof(wait_list),
+                                                         allow_terminating_thread);
+
+    // Sleep the thread.
+    {
+        KScopedSchedulerLockAndSleep lk(kernel, owner, timeout);
+
+        if (!allow_terminating_thread && owner->IsTerminationRequested()) {
+            lk.CancelSleep();
+            return;
+        }
+
+        lock->Unlock();
+
+        // Add the thread to the queue.
+        wait_list.push_back(*owner);
+
+        // Begin waiting.
+        owner->BeginWait(std::addressof(wait_queue));
+    }
+
+    // Re-acquire the lock.
+    lock->Lock();
+}
+
+void KLightConditionVariable::Broadcast() {
+    KScopedSchedulerLock lk(kernel);
+
+    // Signal all threads.
+    for (auto it = wait_list.begin(); it != wait_list.end(); it = wait_list.erase(it)) {
+        it->EndWait(ResultSuccess);
+    }
+}
+
+} // namespace Kernel
--- a/src/core/hle/kernel/k_light_condition_variable.h
+++ b/src/core/hle/kernel/k_light_condition_variable.h
@@ -2,72 +2,24 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.

-// This file references various implementation details from Atmosphere, an open-source firmware for
-// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
-
 #pragma once

 #include "common/common_types.h"
-#include "core/hle/kernel/k_scheduler.h"
-#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
-#include "core/hle/kernel/time_manager.h"
+#include "core/hle/kernel/k_thread.h"

 namespace Kernel {
+
 class KernelCore;
+class KLightLock;

 class KLightConditionVariable {
 public:
    explicit KLightConditionVariable(KernelCore& kernel_) : kernel{kernel_} {}

-    void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true) {
-        WaitImpl(lock, timeout, allow_terminating_thread);
-    }
-
-    void Broadcast() {
-        KScopedSchedulerLock lk{kernel};
-
-        // Signal all threads.
-        for (auto& thread : wait_list) {
-            thread.SetState(ThreadState::Runnable);
-        }
-    }
+    void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true);
+    void Broadcast();

 private:
-    void WaitImpl(KLightLock* lock, s64 timeout, bool allow_terminating_thread) {
-        KThread* owner = GetCurrentThreadPointer(kernel);
-
-        // Sleep the thread.
-        {
-            KScopedSchedulerLockAndSleep lk{kernel, owner, timeout};
-
-            if (!allow_terminating_thread && owner->IsTerminationRequested()) {
-                lk.CancelSleep();
-                return;
-            }
-
-            lock->Unlock();
-
-            // Set the thread as waiting.
-            GetCurrentThread(kernel).SetState(ThreadState::Waiting);
-
-            // Add the thread to the queue.
-            wait_list.push_back(GetCurrentThread(kernel));
-        }
-
-        // Remove the thread from the wait list.
-        {
-            KScopedSchedulerLock sl{kernel};
-
-            wait_list.erase(wait_list.iterator_to(GetCurrentThread(kernel)));
-        }
-
-        // Cancel the task that the sleep setup.
-        kernel.TimeManager().UnscheduleTimeEvent(owner);
-
-        // Re-acquire the lock.
-        lock->Lock();
-    }
-
    KernelCore& kernel;
    KThread::WaiterList wait_list{};
 };
--- a/src/core/hle/kernel/k_light_lock.cpp
+++ b/src/core/hle/kernel/k_light_lock.cpp
@@ -5,44 +5,59 @@
 #include "core/hle/kernel/k_light_lock.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"

 namespace Kernel {

+namespace {
+
+class ThreadQueueImplForKLightLock final : public KThreadQueue {
+public:
+    explicit ThreadQueueImplForKLightLock(KernelCore& kernel_) : KThreadQueue(kernel_) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Remove the thread as a waiter from its owner.
+        if (KThread* owner = waiting_thread->GetLockOwner(); owner != nullptr) {
+            owner->RemoveWaiter(waiting_thread);
+        }
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+};
+
+} // namespace
+
 void KLightLock::Lock() {
    const uintptr_t cur_thread = reinterpret_cast<uintptr_t>(GetCurrentThreadPointer(kernel));
-    const uintptr_t cur_thread_tag = (cur_thread | 1);

    while (true) {
        uintptr_t old_tag = tag.load(std::memory_order_relaxed);

-        while (!tag.compare_exchange_weak(old_tag, (old_tag == 0) ? cur_thread : old_tag | 1,
+        while (!tag.compare_exchange_weak(old_tag, (old_tag == 0) ? cur_thread : (old_tag | 1),
                                          std::memory_order_acquire)) {
-            if ((old_tag | 1) == cur_thread_tag) {
-                return;
-            }
        }

-        if ((old_tag == 0) || ((old_tag | 1) == cur_thread_tag)) {
+        if (old_tag == 0 || this->LockSlowPath(old_tag | 1, cur_thread)) {
            break;
        }
-
-        LockSlowPath(old_tag | 1, cur_thread);
    }
 }

 void KLightLock::Unlock() {
    const uintptr_t cur_thread = reinterpret_cast<uintptr_t>(GetCurrentThreadPointer(kernel));
+
    uintptr_t expected = cur_thread;
-    do {
-        if (expected != cur_thread) {
-            return UnlockSlowPath(cur_thread);
-        }
-    } while (!tag.compare_exchange_weak(expected, 0, std::memory_order_release));
+    if (!tag.compare_exchange_strong(expected, 0, std::memory_order_release)) {
+        this->UnlockSlowPath(cur_thread);
+    }
 }

-void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
+bool KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
    KThread* cur_thread = reinterpret_cast<KThread*>(_cur_thread);
+    ThreadQueueImplForKLightLock wait_queue(kernel);

    // Pend the current thread waiting on the owner thread.
    {
@@ -50,7 +65,7 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {

        // Ensure we actually have locking to do.
        if (tag.load(std::memory_order_relaxed) != _owner) {
-            return;
+            return false;
        }

        // Add the current thread as a waiter on the owner.
@@ -58,22 +73,15 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
        cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag)));
        owner_thread->AddWaiter(cur_thread);

-        // Set thread states.
-        cur_thread->SetState(ThreadState::Waiting);
+        // Begin waiting to hold the lock.
+        cur_thread->BeginWait(std::addressof(wait_queue));

        if (owner_thread->IsSuspended()) {
            owner_thread->ContinueIfHasKernelWaiters();
        }
    }

-    // We're no longer waiting on the lock owner.
-    {
-        KScopedSchedulerLock sl{kernel};
-
-        if (KThread* owner_thread = cur_thread->GetLockOwner(); owner_thread != nullptr) {
-            owner_thread->RemoveWaiter(cur_thread);
-        }
-    }
+    return true;
 }

 void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) {
@@ -81,22 +89,20 @@ void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) {

    // Unlock.
    {
-        KScopedSchedulerLock sl{kernel};
+        KScopedSchedulerLock sl(kernel);

        // Get the next owner.
-        s32 num_waiters = 0;
+        s32 num_waiters;
        KThread* next_owner = owner_thread->RemoveWaiterByKey(
            std::addressof(num_waiters), reinterpret_cast<uintptr_t>(std::addressof(tag)));

        // Pass the lock to the next owner.
        uintptr_t next_tag = 0;
        if (next_owner != nullptr) {
-            next_tag = reinterpret_cast<uintptr_t>(next_owner);
-            if (num_waiters > 1) {
-                next_tag |= 0x1;
-            }
+            next_tag =
+                reinterpret_cast<uintptr_t>(next_owner) | static_cast<uintptr_t>(num_waiters > 1);

-            next_owner->SetState(ThreadState::Runnable);
+            next_owner->EndWait(ResultSuccess);

            if (next_owner->IsSuspended()) {
                next_owner->ContinueIfHasKernelWaiters();
@@ -110,7 +116,7 @@ void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) {
        }

        // Write the new tag value.
-        tag.store(next_tag);
+        tag.store(next_tag, std::memory_order_release);
    }
 }

--- a/src/core/hle/kernel/k_light_lock.h
+++ b/src/core/hle/kernel/k_light_lock.h
@@ -20,7 +20,7 @@ public:

    void Unlock();

-    void LockSlowPath(uintptr_t owner, uintptr_t cur_thread);
+    bool LockSlowPath(uintptr_t owner, uintptr_t cur_thread);

    void UnlockSlowPath(uintptr_t cur_thread);

--- a/src/core/hle/kernel/k_memory_block.h
+++ b/src/core/hle/kernel/k_memory_block.h
@@ -120,7 +120,7 @@ static_assert(static_cast<u32>(KMemoryState::CodeOut) == 0x00402015);

 enum class KMemoryPermission : u8 {
    None = 0,
-    Mask = static_cast<u8>(~None),
+    All = static_cast<u8>(~None),

    Read = 1 << 0,
    Write = 1 << 1,
@@ -131,6 +131,26 @@ enum class KMemoryPermission : u8 {

    UserMask = static_cast<u8>(Svc::MemoryPermission::Read | Svc::MemoryPermission::Write |
                               Svc::MemoryPermission::Execute),
+
+    KernelShift = 3,
+
+    KernelRead = Read << KernelShift,
+    KernelWrite = Write << KernelShift,
+    KernelExecute = Execute << KernelShift,
+
+    NotMapped = (1 << (2 * KernelShift)),
+
+    KernelReadWrite = KernelRead | KernelWrite,
+    KernelReadExecute = KernelRead | KernelExecute,
+
+    UserRead = Read | KernelRead,
+    UserWrite = Write | KernelWrite,
+    UserExecute = Execute,
+
+    UserReadWrite = UserRead | UserWrite,
+    UserReadExecute = UserRead | UserExecute,
+
+    IpcLockChangeMask = NotMapped | UserReadWrite
 };
 DECLARE_ENUM_FLAG_OPERATORS(KMemoryPermission);

--- a/src/core/hle/kernel/k_page_linked_list.h
+++ b/src/core/hle/kernel/k_page_linked_list.h
@@ -27,6 +27,10 @@ public:
            return num_pages;
        }

+        constexpr std::size_t GetSize() const {
+            return GetNumPages() * PageSize;
+        }
+
    private:
        u64 addr{};
        std::size_t num_pages{};
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -264,9 +264,9 @@ ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_
    ASSERT(heap_last < stack_start || stack_last < heap_start);
    ASSERT(heap_last < kmap_start || kmap_last < heap_start);

-    current_heap_addr = heap_region_start;
-    heap_capacity = 0;
-    physical_memory_usage = 0;
+    current_heap_end = heap_region_start;
+    max_heap_size = 0;
+    mapped_physical_memory_size = 0;
    memory_pool = pool;

    page_table_impl.Resize(address_space_width, PageBits);
@@ -306,7 +306,7 @@ ResultCode KPageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std:
    KMemoryState state{};
    KMemoryPermission perm{};
    CASCADE_CODE(CheckMemoryState(&state, &perm, nullptr, src_addr, size, KMemoryState::All,
-                                  KMemoryState::Normal, KMemoryPermission::Mask,
+                                  KMemoryState::Normal, KMemoryPermission::All,
                                  KMemoryPermission::ReadAndWrite, KMemoryAttribute::Mask,
                                  KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));

@@ -368,6 +368,33 @@ ResultCode KPageTable::UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, st
    return ResultSuccess;
 }

+ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
+                                          KPageTable& src_page_table, VAddr src_addr) {
+    std::lock_guard lock{page_table_lock};
+
+    const std::size_t num_pages{size / PageSize};
+
+    // Check that the memory is mapped in the destination process.
+    size_t num_allocator_blocks;
+    R_TRY(CheckMemoryState(&num_allocator_blocks, dst_addr, size, KMemoryState::All,
+                           KMemoryState::SharedCode, KMemoryPermission::UserReadWrite,
+                           KMemoryPermission::UserReadWrite, KMemoryAttribute::All,
+                           KMemoryAttribute::None));
+
+    // Check that the memory is mapped in the source process.
+    R_TRY(src_page_table.CheckMemoryState(src_addr, size, KMemoryState::FlagCanMapProcess,
+                                          KMemoryState::FlagCanMapProcess, KMemoryPermission::None,
+                                          KMemoryPermission::None, KMemoryAttribute::All,
+                                          KMemoryAttribute::None));
+
+    CASCADE_CODE(Operate(dst_addr, num_pages, KMemoryPermission::None, OperationType::Unmap));
+
+    // Apply the memory block update.
+    block_manager->Update(dst_addr, num_pages, KMemoryState::Free, KMemoryPermission::None,
+                          KMemoryAttribute::None);
+
+    return ResultSuccess;
+}
 void KPageTable::MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end) {
    auto node{page_linked_list.Nodes().begin()};
    PAddr map_addr{node->GetAddress()};
@@ -438,7 +465,7 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {

    MapPhysicalMemory(page_linked_list, addr, end_addr);

-    physical_memory_usage += remaining_size;
+    mapped_physical_memory_size += remaining_size;

    const std::size_t num_pages{size / PageSize};
    block_manager->Update(addr, num_pages, KMemoryState::Free, KMemoryPermission::None,
@@ -480,7 +507,7 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {

    auto process{system.Kernel().CurrentProcess()};
    process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
-    physical_memory_usage -= mapped_size;
+    mapped_physical_memory_size -= mapped_size;

    return ResultSuccess;
 }
@@ -527,7 +554,7 @@ ResultCode KPageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
    KMemoryState src_state{};
    CASCADE_CODE(CheckMemoryState(
        &src_state, nullptr, nullptr, src_addr, size, KMemoryState::FlagCanAlias,
-        KMemoryState::FlagCanAlias, KMemoryPermission::Mask, KMemoryPermission::ReadAndWrite,
+        KMemoryState::FlagCanAlias, KMemoryPermission::All, KMemoryPermission::ReadAndWrite,
        KMemoryAttribute::Mask, KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));

    if (IsRegionMapped(dst_addr, size)) {
@@ -566,7 +593,7 @@ ResultCode KPageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
    KMemoryState src_state{};
    CASCADE_CODE(CheckMemoryState(
        &src_state, nullptr, nullptr, src_addr, size, KMemoryState::FlagCanAlias,
-        KMemoryState::FlagCanAlias, KMemoryPermission::Mask, KMemoryPermission::None,
+        KMemoryState::FlagCanAlias, KMemoryPermission::All, KMemoryPermission::None,
        KMemoryAttribute::Mask, KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));

    KMemoryPermission dst_perm{};
@@ -757,7 +784,7 @@ ResultCode KPageTable::ReserveTransferMemory(VAddr addr, std::size_t size, KMemo
    CASCADE_CODE(CheckMemoryState(
        &state, nullptr, &attribute, addr, size,
        KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted,
-        KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted, KMemoryPermission::Mask,
+        KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted, KMemoryPermission::All,
        KMemoryPermission::ReadAndWrite, KMemoryAttribute::Mask, KMemoryAttribute::None,
        KMemoryAttribute::IpcAndDeviceMapped));

@@ -779,6 +806,33 @@ ResultCode KPageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
                         KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));

    block_manager->Update(addr, size / PageSize, state, KMemoryPermission::ReadAndWrite);
+    return ResultSuccess;
+}
+
+ResultCode KPageTable::SetMemoryPermission(VAddr addr, std::size_t size,
+                                           Svc::MemoryPermission svc_perm) {
+    const size_t num_pages = size / PageSize;
+
+    // Lock the table.
+    std::lock_guard lock{page_table_lock};
+
+    // Verify we can change the memory permission.
+    KMemoryState old_state;
+    KMemoryPermission old_perm;
+    R_TRY(this->CheckMemoryState(
+        std::addressof(old_state), std::addressof(old_perm), nullptr, addr, size,
+        KMemoryState::FlagCanReprotect, KMemoryState::FlagCanReprotect, KMemoryPermission::None,
+        KMemoryPermission::None, KMemoryAttribute::All, KMemoryAttribute::None));
+
+    // Determine new perm.
+    const KMemoryPermission new_perm = ConvertToKMemoryPermission(svc_perm);
+    R_SUCCEED_IF(old_perm == new_perm);
+
+    // Perform mapping operation.
+    R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
+
+    // Update the blocks.
+    block_manager->Update(addr, num_pages, old_state, new_perm, KMemoryAttribute::None);

    return ResultSuccess;
 }
@@ -805,61 +859,125 @@ ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryA
    return ResultSuccess;
 }

-ResultCode KPageTable::SetHeapCapacity(std::size_t new_heap_capacity) {
+ResultCode KPageTable::SetMaxHeapSize(std::size_t size) {
+    // Lock the table.
    std::lock_guard lock{page_table_lock};
-    heap_capacity = new_heap_capacity;
+
+    // Only process page tables are allowed to set heap size.
+    ASSERT(!this->IsKernel());
+
+    max_heap_size = size;
+
    return ResultSuccess;
 }

-ResultVal<VAddr> KPageTable::SetHeapSize(std::size_t size) {
+ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
+    // Try to perform a reduction in heap, instead of an extension.
+    VAddr cur_address{};
+    std::size_t allocation_size{};
+    {
+        // Lock the table.
+        std::lock_guard lk(page_table_lock);

-    if (size > heap_region_end - heap_region_start) {
-        return ResultOutOfMemory;
+        // Validate that setting heap size is possible at all.
+        R_UNLESS(!is_kernel, ResultOutOfMemory);
+        R_UNLESS(size <= static_cast<std::size_t>(heap_region_end - heap_region_start),
+                 ResultOutOfMemory);
+        R_UNLESS(size <= max_heap_size, ResultOutOfMemory);
+
+        if (size < GetHeapSize()) {
+            // The size being requested is less than the current size, so we need to free the end of
+            // the heap.
+
+            // Validate memory state.
+            std::size_t num_allocator_blocks;
+            R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks),
+                                         heap_region_start + size, GetHeapSize() - size,
+                                         KMemoryState::All, KMemoryState::Normal,
+                                         KMemoryPermission::All, KMemoryPermission::ReadAndWrite,
+                                         KMemoryAttribute::All, KMemoryAttribute::None));
+
+            // Unmap the end of the heap.
+            const auto num_pages = (GetHeapSize() - size) / PageSize;
+            R_TRY(Operate(heap_region_start + size, num_pages, KMemoryPermission::None,
+                          OperationType::Unmap));
+
+            // Release the memory from the resource limit.
+            system.Kernel().CurrentProcess()->GetResourceLimit()->Release(
+                LimitableResource::PhysicalMemory, num_pages * PageSize);
+
+            // Apply the memory block update.
+            block_manager->Update(heap_region_start + size, num_pages, KMemoryState::Free,
+                                  KMemoryPermission::None, KMemoryAttribute::None);
+
+            // Update the current heap end.
+            current_heap_end = heap_region_start + size;
+
+            // Set the output.
+            *out = heap_region_start;
+            return ResultSuccess;
+        } else if (size == GetHeapSize()) {
+            // The size requested is exactly the current size.
+            *out = heap_region_start;
+            return ResultSuccess;
+        } else {
+            // We have to allocate memory. Determine how much to allocate and where while the table
+            // is locked.
+            cur_address = current_heap_end;
+            allocation_size = size - GetHeapSize();
+        }
    }

-    const u64 previous_heap_size{GetHeapSize()};
+    // Reserve memory for the heap extension.
+    KScopedResourceReservation memory_reservation(
+        system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
+        allocation_size);
+    R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);

-    UNIMPLEMENTED_IF_MSG(previous_heap_size > size, "Heap shrink is unimplemented");
+    // Allocate pages for the heap extension.
+    KPageLinkedList page_linked_list;
+    R_TRY(system.Kernel().MemoryManager().Allocate(page_linked_list, allocation_size / PageSize,
+                                                   memory_pool));

-    // Increase the heap size
+    // Map the pages.
    {
-        std::lock_guard lock{page_table_lock};
+        // Lock the table.
+        std::lock_guard lk(page_table_lock);

-        const u64 delta{size - previous_heap_size};
+        // Ensure that the heap hasn't changed since we began executing.
+        ASSERT(cur_address == current_heap_end);

-        // Reserve memory for the heap extension.
-        KScopedResourceReservation memory_reservation(
-            system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
-            delta);
+        // Check the memory state.
+        std::size_t num_allocator_blocks{};
+        R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), current_heap_end,
+                                     allocation_size, KMemoryState::All, KMemoryState::Free,
+                                     KMemoryPermission::None, KMemoryPermission::None,
+                                     KMemoryAttribute::None, KMemoryAttribute::None));

-        if (!memory_reservation.Succeeded()) {
-            LOG_ERROR(Kernel, "Could not reserve heap extension of size {:X} bytes", delta);
-            return ResultLimitReached;
+        // Map the pages.
+        const auto num_pages = allocation_size / PageSize;
+        R_TRY(Operate(current_heap_end, num_pages, page_linked_list, OperationType::MapGroup));
+
+        // Clear all the newly allocated pages.
+        for (std::size_t cur_page = 0; cur_page < num_pages; ++cur_page) {
+            std::memset(system.Memory().GetPointer(current_heap_end + (cur_page * PageSize)), 0,
+                        PageSize);
        }

-        KPageLinkedList page_linked_list;
-        const std::size_t num_pages{delta / PageSize};
-
-        CASCADE_CODE(
-            system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool));
-
-        if (IsRegionMapped(current_heap_addr, delta)) {
-            return ResultInvalidCurrentMemory;
-        }
-
-        CASCADE_CODE(
-            Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup));
-
-        // Succeeded in allocation, commit the resource reservation
+        // We succeeded, so commit our memory reservation.
        memory_reservation.Commit();

-        block_manager->Update(current_heap_addr, num_pages, KMemoryState::Normal,
-                              KMemoryPermission::ReadAndWrite);
+        // Apply the memory block update.
+        block_manager->Update(current_heap_end, num_pages, KMemoryState::Normal,
+                              KMemoryPermission::ReadAndWrite, KMemoryAttribute::None);

-        current_heap_addr = heap_region_start + size;
+        // Update the current heap end.
+        current_heap_end = heap_region_start + size;
+
+        // Set the output.
+        *out = heap_region_start;
+        return ResultSuccess;
    }
-
-    return heap_region_start;
 }

 ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
@@ -942,6 +1060,60 @@ ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size)
    return ResultSuccess;
 }

+ResultCode KPageTable::LockForCodeMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    KMemoryPermission new_perm = KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite;
+
+    KMemoryPermission old_perm{};
+
+    if (const ResultCode result{CheckMemoryState(
+            nullptr, &old_perm, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
+            KMemoryState::FlagCanCodeMemory, KMemoryPermission::All,
+            KMemoryPermission::UserReadWrite, KMemoryAttribute::All, KMemoryAttribute::None)};
+        result.IsError()) {
+        return result;
+    }
+
+    new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
+
+    block_manager->UpdateLock(
+        addr, size / PageSize,
+        [](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
+            block->ShareToDevice(permission);
+        },
+        new_perm);
+
+    return ResultSuccess;
+}
+
+ResultCode KPageTable::UnlockForCodeMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    KMemoryPermission new_perm = KMemoryPermission::UserReadWrite;
+
+    KMemoryPermission old_perm{};
+
+    if (const ResultCode result{CheckMemoryState(
+            nullptr, &old_perm, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
+            KMemoryState::FlagCanCodeMemory, KMemoryPermission::None, KMemoryPermission::None,
+            KMemoryAttribute::All, KMemoryAttribute::Locked)};
+        result.IsError()) {
+        return result;
+    }
+
+    new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
+
+    block_manager->UpdateLock(
+        addr, size / PageSize,
+        [](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
+            block->UnshareToDevice(permission);
+        },
+        new_perm);
+
+    return ResultSuccess;
+}
+
 ResultCode KPageTable::InitializeMemoryLayout(VAddr start, VAddr end) {
    block_manager = std::make_unique<KMemoryBlockManager>(start, end);

@@ -950,9 +1122,8 @@ ResultCode KPageTable::InitializeMemoryLayout(VAddr start, VAddr end) {

 bool KPageTable::IsRegionMapped(VAddr address, u64 size) {
    return CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
-                            KMemoryPermission::Mask, KMemoryPermission::None,
-                            KMemoryAttribute::Mask, KMemoryAttribute::None,
-                            KMemoryAttribute::IpcAndDeviceMapped)
+                            KMemoryPermission::All, KMemoryPermission::None, KMemoryAttribute::Mask,
+                            KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped)
        .IsError();
 }

@@ -1231,4 +1402,42 @@ ResultCode KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermissi
    return ResultSuccess;
 }

+ResultCode KPageTable::CheckMemoryState(size_t* out_blocks_needed, VAddr addr, size_t size,
+                                        KMemoryState state_mask, KMemoryState state,
+                                        KMemoryPermission perm_mask, KMemoryPermission perm,
+                                        KMemoryAttribute attr_mask, KMemoryAttribute attr) const {
+    // Get information about the first block.
+    const VAddr last_addr = addr + size - 1;
+    KMemoryBlockManager::const_iterator it{block_manager->FindIterator(addr)};
+    KMemoryInfo info = it->GetMemoryInfo();
+
+    // If the start address isn't aligned, we need a block.
+    const size_t blocks_for_start_align =
+        (Common::AlignDown(addr, PageSize) != info.GetAddress()) ? 1 : 0;
+
+    while (true) {
+        // Validate against the provided masks.
+        R_TRY(CheckMemoryState(info, state_mask, state, perm_mask, perm, attr_mask, attr));
+
+        // Break once we're done.
+        if (last_addr <= info.GetLastAddress()) {
+            break;
+        }
+
+        // Advance our iterator.
+        it++;
+        info = it->GetMemoryInfo();
+    }
+
+    // If the end address isn't aligned, we need a block.
+    const size_t blocks_for_end_align =
+        (Common::AlignUp(addr + size, PageSize) != info.GetEndAddress()) ? 1 : 0;
+
+    if (out_blocks_needed != nullptr) {
+        *out_blocks_needed = blocks_for_start_align + blocks_for_end_align;
+    }
+
+    return ResultSuccess;
+}
+
 } // namespace Kernel
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -33,6 +33,8 @@ public:
                              KMemoryPermission perm);
    ResultCode MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
    ResultCode UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode UnmapProcessMemory(VAddr dst_addr, std::size_t size, KPageTable& src_page_table,
+                                  VAddr src_addr);
    ResultCode MapPhysicalMemory(VAddr addr, std::size_t size);
    ResultCode UnmapPhysicalMemory(VAddr addr, std::size_t size);
    ResultCode UnmapMemory(VAddr addr, std::size_t size);
@@ -45,16 +47,19 @@ public:
    KMemoryInfo QueryInfo(VAddr addr);
    ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
    ResultCode ResetTransferMemory(VAddr addr, std::size_t size);
+    ResultCode SetMemoryPermission(VAddr addr, std::size_t size, Svc::MemoryPermission perm);
    ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryAttribute mask,
                                  KMemoryAttribute value);
-    ResultCode SetHeapCapacity(std::size_t new_heap_capacity);
-    ResultVal<VAddr> SetHeapSize(std::size_t size);
+    ResultCode SetMaxHeapSize(std::size_t size);
+    ResultCode SetHeapSize(VAddr* out, std::size_t size);
    ResultVal<VAddr> AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
                                          bool is_map_only, VAddr region_start,
                                          std::size_t region_num_pages, KMemoryState state,
                                          KMemoryPermission perm, PAddr map_addr = 0);
    ResultCode LockForDeviceAddressSpace(VAddr addr, std::size_t size);
    ResultCode UnlockForDeviceAddressSpace(VAddr addr, std::size_t size);
+    ResultCode LockForCodeMemory(VAddr addr, std::size_t size);
+    ResultCode UnlockForCodeMemory(VAddr addr, std::size_t size);

    Common::PageTable& PageTableImpl() {
        return page_table_impl;
@@ -115,6 +120,10 @@ private:
        return CheckMemoryState(nullptr, nullptr, nullptr, addr, size, state_mask, state, perm_mask,
                                perm, attr_mask, attr, ignore_attr);
    }
+    ResultCode CheckMemoryState(size_t* out_blocks_needed, VAddr addr, size_t size,
+                                KMemoryState state_mask, KMemoryState state,
+                                KMemoryPermission perm_mask, KMemoryPermission perm,
+                                KMemoryAttribute attr_mask, KMemoryAttribute attr) const;

    std::recursive_mutex page_table_lock;
    std::unique_ptr<KMemoryBlockManager> block_manager;
@@ -174,14 +183,15 @@ public:
    constexpr VAddr GetAliasCodeRegionSize() const {
        return alias_code_region_end - alias_code_region_start;
    }
+    size_t GetNormalMemorySize() {
+        std::lock_guard lk(page_table_lock);
+        return GetHeapSize() + mapped_physical_memory_size;
+    }
    constexpr std::size_t GetAddressSpaceWidth() const {
        return address_space_width;
    }
-    constexpr std::size_t GetHeapSize() {
-        return current_heap_addr - heap_region_start;
-    }
-    constexpr std::size_t GetTotalHeapSize() {
-        return GetHeapSize() + physical_memory_usage;
+    constexpr std::size_t GetHeapSize() const {
+        return current_heap_end - heap_region_start;
    }
    constexpr bool IsInsideAddressSpace(VAddr address, std::size_t size) const {
        return address_space_start <= address && address + size - 1 <= address_space_end - 1;
@@ -261,10 +271,8 @@ private:
    VAddr code_region_end{};
    VAddr alias_code_region_start{};
    VAddr alias_code_region_end{};
-    VAddr current_heap_addr{};

-    std::size_t heap_capacity{};
-    std::size_t physical_memory_usage{};
+    std::size_t mapped_physical_memory_size{};
    std::size_t max_heap_size{};
    std::size_t max_physical_memory_size{};
    std::size_t address_space_width{};
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -28,7 +28,6 @@
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"
-#include "core/hle/lock.h"
 #include "core/memory.h"

 namespace Kernel {
@@ -60,6 +59,7 @@ void SetupMainThread(Core::System& system, KProcess& owner_process, u32 priority
    thread->GetContext64().cpu_registers[0] = 0;
    thread->GetContext32().cpu_registers[1] = thread_handle;
    thread->GetContext64().cpu_registers[1] = thread_handle;
+    thread->DisableDispatch();

    auto& kernel = system.Kernel();
    // Threads by default are dormant, wake up the main thread so it runs when the scheduler fires
@@ -172,7 +172,7 @@ void KProcess::DecrementThreadCount() {

 u64 KProcess::GetTotalPhysicalMemoryAvailable() const {
    const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
-                       page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
+                       page_table->GetNormalMemorySize() + GetSystemResourceSize() + image_size +
                       main_thread_stack_size};
    if (const auto pool_size = kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application);
        capacity != pool_size) {
@@ -189,7 +189,7 @@ u64 KProcess::GetTotalPhysicalMemoryAvailableWithoutSystemResource() const {
 }

 u64 KProcess::GetTotalPhysicalMemoryUsed() const {
-    return image_size + main_thread_stack_size + page_table->GetTotalHeapSize() +
+    return image_size + main_thread_stack_size + page_table->GetNormalMemorySize() +
           GetSystemResourceSize();
 }

@@ -227,12 +227,15 @@ void KProcess::PinCurrentThread() {
    const s32 core_id = GetCurrentCoreId(kernel);
    KThread* cur_thread = GetCurrentThreadPointer(kernel);

-    // Pin it.
-    PinThread(core_id, cur_thread);
-    cur_thread->Pin();
+    // If the thread isn't terminated, pin it.
+    if (!cur_thread->IsTerminationRequested()) {
+        // Pin it.
+        PinThread(core_id, cur_thread);
+        cur_thread->Pin();

-    // An update is needed.
-    KScheduler::SetSchedulerUpdateNeeded(kernel);
+        // An update is needed.
+        KScheduler::SetSchedulerUpdateNeeded(kernel);
+    }
 }

 void KProcess::UnpinCurrentThread() {
@@ -250,6 +253,20 @@ void KProcess::UnpinCurrentThread() {
    KScheduler::SetSchedulerUpdateNeeded(kernel);
 }

+void KProcess::UnpinThread(KThread* thread) {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+
+    // Get the thread's core id.
+    const auto core_id = thread->GetActiveCore();
+
+    // Unpin it.
+    UnpinThread(core_id, thread);
+    thread->Unpin();
+
+    // An update is needed.
+    KScheduler::SetSchedulerUpdateNeeded(kernel);
+}
+
 ResultCode KProcess::AddSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address,
                                     [[maybe_unused]] size_t size) {
    // Lock ourselves, to prevent concurrent access.
@@ -393,8 +410,8 @@ void KProcess::Run(s32 main_thread_priority, u64 stack_size) {
    resource_limit->Reserve(LimitableResource::Threads, 1);
    resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);

-    const std::size_t heap_capacity{memory_usage_capacity - main_thread_stack_size - image_size};
-    ASSERT(!page_table->SetHeapCapacity(heap_capacity).IsError());
+    const std::size_t heap_capacity{memory_usage_capacity - (main_thread_stack_size + image_size)};
+    ASSERT(!page_table->SetMaxHeapSize(heap_capacity).IsError());

    ChangeStatus(ProcessStatus::Running);

@@ -525,7 +542,6 @@ void KProcess::FreeTLSRegion(VAddr tls_address) {
 }

 void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) {
-    std::lock_guard lock{HLE::g_hle_lock};
    const auto ReprotectSegment = [&](const CodeSet::Segment& segment,
                                      KMemoryPermission permission) {
        page_table->SetProcessMemoryPermission(segment.addr + base_addr, segment.size, permission);
--- a/src/core/hle/kernel/k_process.h
+++ b/src/core/hle/kernel/k_process.h
@@ -347,6 +347,7 @@ public:

    void PinCurrentThread();
    void UnpinCurrentThread();
+    void UnpinThread(KThread* thread);

    KLightLock& GetStateLock() {
        return state_lock;
--- a/src/core/hle/kernel/k_scheduler.cpp
+++ b/src/core/hle/kernel/k_scheduler.cpp
@@ -240,8 +240,8 @@ void KScheduler::OnThreadPriorityChanged(KernelCore& kernel, KThread* thread, s3

    // If the thread is runnable, we want to change its priority in the queue.
    if (thread->GetRawState() == ThreadState::Runnable) {
-        GetPriorityQueue(kernel).ChangePriority(
-            old_priority, thread == kernel.CurrentScheduler()->GetCurrentThread(), thread);
+        GetPriorityQueue(kernel).ChangePriority(old_priority,
+                                                thread == kernel.GetCurrentEmuThread(), thread);
        IncrementScheduledCount(thread);
        SetSchedulerUpdateNeeded(kernel);
    }
@@ -360,7 +360,7 @@ void KScheduler::RotateScheduledQueue(s32 cpu_core_id, s32 priority) {
 }

 bool KScheduler::CanSchedule(KernelCore& kernel) {
-    return kernel.CurrentScheduler()->GetCurrentThread()->GetDisableDispatchCount() <= 1;
+    return kernel.GetCurrentEmuThread()->GetDisableDispatchCount() <= 1;
 }

 bool KScheduler::IsSchedulerUpdateNeeded(const KernelCore& kernel) {
@@ -376,20 +376,30 @@ void KScheduler::ClearSchedulerUpdateNeeded(KernelCore& kernel) {
 }

 void KScheduler::DisableScheduling(KernelCore& kernel) {
-    if (auto* scheduler = kernel.CurrentScheduler(); scheduler) {
-        ASSERT(scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 0);
-        scheduler->GetCurrentThread()->DisableDispatch();
+    // If we are shutting down the kernel, none of this is relevant anymore.
+    if (kernel.IsShuttingDown()) {
+        return;
    }
+
+    ASSERT(GetCurrentThreadPointer(kernel)->GetDisableDispatchCount() >= 0);
+    GetCurrentThreadPointer(kernel)->DisableDispatch();
 }

 void KScheduler::EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling) {
-    if (auto* scheduler = kernel.CurrentScheduler(); scheduler) {
-        ASSERT(scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1);
-        if (scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1) {
-            scheduler->GetCurrentThread()->EnableDispatch();
-        }
+    // If we are shutting down the kernel, none of this is relevant anymore.
+    if (kernel.IsShuttingDown()) {
+        return;
+    }
+
+    auto* current_thread = GetCurrentThreadPointer(kernel);
+
+    ASSERT(current_thread->GetDisableDispatchCount() >= 1);
+
+    if (current_thread->GetDisableDispatchCount() > 1) {
+        current_thread->EnableDispatch();
+    } else {
+        RescheduleCores(kernel, cores_needing_scheduling);
    }
-    RescheduleCores(kernel, cores_needing_scheduling);
 }

 u64 KScheduler::UpdateHighestPriorityThreads(KernelCore& kernel) {
@@ -617,13 +627,17 @@ KScheduler::KScheduler(Core::System& system_, s32 core_id_) : system{system_}, c
    state.highest_priority_thread = nullptr;
 }

-KScheduler::~KScheduler() {
+void KScheduler::Finalize() {
    if (idle_thread) {
        idle_thread->Close();
        idle_thread = nullptr;
    }
 }

+KScheduler::~KScheduler() {
+    ASSERT(!idle_thread);
+}
+
 KThread* KScheduler::GetCurrentThread() const {
    if (auto result = current_thread.load(); result) {
        return result;
@@ -642,10 +656,12 @@ void KScheduler::RescheduleCurrentCore() {
    if (phys_core.IsInterrupted()) {
        phys_core.ClearInterrupt();
    }
+
    guard.Lock();
    if (state.needs_scheduling.load()) {
        Schedule();
    } else {
+        GetCurrentThread()->EnableDispatch();
        guard.Unlock();
    }
 }
@@ -655,26 +671,33 @@ void KScheduler::OnThreadStart() {
 }

 void KScheduler::Unload(KThread* thread) {
+    ASSERT(thread);
+
    LOG_TRACE(Kernel, "core {}, unload thread {}", core_id, thread ? thread->GetName() : "nullptr");

-    if (thread) {
-        if (thread->IsCallingSvc()) {
-            thread->ClearIsCallingSvc();
-        }
-        if (!thread->IsTerminationRequested()) {
-            prev_thread = thread;
-
-            Core::ARM_Interface& cpu_core = system.ArmInterface(core_id);
-            cpu_core.SaveContext(thread->GetContext32());
-            cpu_core.SaveContext(thread->GetContext64());
-            // Save the TPIDR_EL0 system register in case it was modified.
-            thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0());
-            cpu_core.ClearExclusiveState();
-        } else {
-            prev_thread = nullptr;
-        }
-        thread->context_guard.Unlock();
+    if (thread->IsCallingSvc()) {
+        thread->ClearIsCallingSvc();
    }
+
+    auto& physical_core = system.Kernel().PhysicalCore(core_id);
+    if (!physical_core.IsInitialized()) {
+        return;
+    }
+
+    Core::ARM_Interface& cpu_core = physical_core.ArmInterface();
+    cpu_core.SaveContext(thread->GetContext32());
+    cpu_core.SaveContext(thread->GetContext64());
+    // Save the TPIDR_EL0 system register in case it was modified.
+    thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0());
+    cpu_core.ClearExclusiveState();
+
+    if (!thread->IsTerminationRequested() && thread->GetActiveCore() == core_id) {
+        prev_thread = thread;
+    } else {
+        prev_thread = nullptr;
+    }
+
+    thread->context_guard.Unlock();
 }

 void KScheduler::Reload(KThread* thread) {
@@ -683,11 +706,6 @@ void KScheduler::Reload(KThread* thread) {
    if (thread) {
        ASSERT_MSG(thread->GetState() == ThreadState::Runnable, "Thread must be runnable.");

-        auto* const thread_owner_process = thread->GetOwnerProcess();
-        if (thread_owner_process != nullptr) {
-            system.Kernel().MakeCurrentProcess(thread_owner_process);
-        }
-
        Core::ARM_Interface& cpu_core = system.ArmInterface(core_id);
        cpu_core.LoadContext(thread->GetContext32());
        cpu_core.LoadContext(thread->GetContext64());
@@ -705,7 +723,7 @@ void KScheduler::SwitchContextStep2() {
 }

 void KScheduler::ScheduleImpl() {
-    KThread* previous_thread = current_thread.load();
+    KThread* previous_thread = GetCurrentThread();
    KThread* next_thread = state.highest_priority_thread;

    state.needs_scheduling = false;
@@ -717,10 +735,15 @@ void KScheduler::ScheduleImpl() {

    // If we're not actually switching thread, there's nothing to do.
    if (next_thread == current_thread.load()) {
+        previous_thread->EnableDispatch();
        guard.Unlock();
        return;
    }

+    if (next_thread->GetCurrentCore() != core_id) {
+        next_thread->SetCurrentCore(core_id);
+    }
+
    current_thread.store(next_thread);

    KProcess* const previous_process = system.Kernel().CurrentProcess();
@@ -731,11 +754,7 @@ void KScheduler::ScheduleImpl() {
    Unload(previous_thread);

    std::shared_ptr<Common::Fiber>* old_context;
-    if (previous_thread != nullptr) {
-        old_context = &previous_thread->GetHostContext();
-    } else {
-        old_context = &idle_thread->GetHostContext();
-    }
+    old_context = &previous_thread->GetHostContext();
    guard.Unlock();

    Common::Fiber::YieldTo(*old_context, *switch_fiber);
--- a/src/core/hle/kernel/k_scheduler.h
+++ b/src/core/hle/kernel/k_scheduler.h
@@ -33,6 +33,8 @@ public:
    explicit KScheduler(Core::System& system_, s32 core_id_);
    ~KScheduler();

+    void Finalize();
+
    /// Reschedules to the next available thread (call after current thread is suspended)
    void RescheduleCurrentCore();

--- a/src/core/hle/kernel/k_scheduler_lock.h
+++ b/src/core/hle/kernel/k_scheduler_lock.h
@@ -23,6 +23,11 @@ public:
    }

    void Lock() {
+        // If we are shutting down the kernel, none of this is relevant anymore.
+        if (kernel.IsShuttingDown()) {
+            return;
+        }
+
        if (IsLockedByCurrentThread()) {
            // If we already own the lock, we can just increment the count.
            ASSERT(lock_count > 0);
@@ -43,6 +48,11 @@ public:
    }

    void Unlock() {
+        // If we are shutting down the kernel, none of this is relevant anymore.
+        if (kernel.IsShuttingDown()) {
+            return;
+        }
+
        ASSERT(IsLockedByCurrentThread());
        ASSERT(lock_count > 0);

--- a/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
+++ b/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
@@ -8,6 +8,7 @@
 #pragma once

 #include "common/common_types.h"
+#include "core/hle/kernel/global_scheduler_context.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/time_manager.h"
--- a/src/core/hle/kernel/k_server_session.cpp
+++ b/src/core/hle/kernel/k_server_session.cpp
@@ -175,8 +175,7 @@ ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) {
    {
        KScopedSchedulerLock lock(kernel);
        if (!context.IsThreadWaiting()) {
-            context.GetThread().Wakeup();
-            context.GetThread().SetSyncedObject(nullptr, result);
+            context.GetThread().EndWait(result);
        }
    }

--- a/src/core/hle/kernel/k_synchronization_object.cpp
+++ b/src/core/hle/kernel/k_synchronization_object.cpp
@@ -8,11 +8,66 @@
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"

 namespace Kernel {

+namespace {
+
+class ThreadQueueImplForKSynchronizationObjectWait final : public KThreadQueueWithoutEndWait {
+public:
+    ThreadQueueImplForKSynchronizationObjectWait(KernelCore& kernel_, KSynchronizationObject** o,
+                                                 KSynchronizationObject::ThreadListNode* n, s32 c)
+        : KThreadQueueWithoutEndWait(kernel_), m_objects(o), m_nodes(n), m_count(c) {}
+
+    void NotifyAvailable(KThread* waiting_thread, KSynchronizationObject* signaled_object,
+                         ResultCode wait_result) override {
+        // Determine the sync index, and unlink all nodes.
+        s32 sync_index = -1;
+        for (auto i = 0; i < m_count; ++i) {
+            // Check if this is the signaled object.
+            if (m_objects[i] == signaled_object && sync_index == -1) {
+                sync_index = i;
+            }
+
+            // Unlink the current node from the current object.
+            m_objects[i]->UnlinkNode(std::addressof(m_nodes[i]));
+        }
+
+        // Set the waiting thread's sync index.
+        waiting_thread->SetSyncedIndex(sync_index);
+
+        // Set the waiting thread as not cancellable.
+        waiting_thread->ClearCancellable();
+
+        // Invoke the base end wait handler.
+        KThreadQueue::EndWait(waiting_thread, wait_result);
+    }
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Remove all nodes from our list.
+        for (auto i = 0; i < m_count; ++i) {
+            m_objects[i]->UnlinkNode(std::addressof(m_nodes[i]));
+        }
+
+        // Set the waiting thread as not cancellable.
+        waiting_thread->ClearCancellable();
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+
+private:
+    KSynchronizationObject** m_objects;
+    KSynchronizationObject::ThreadListNode* m_nodes;
+    s32 m_count;
+};
+
+} // namespace
+
 void KSynchronizationObject::Finalize() {
    this->OnFinalizeSynchronizationObject();
    KAutoObject::Finalize();
@@ -25,11 +80,19 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
    std::vector<ThreadListNode> thread_nodes(num_objects);

    // Prepare for wait.
-    KThread* thread = kernel_ctx.CurrentScheduler()->GetCurrentThread();
+    KThread* thread = GetCurrentThreadPointer(kernel_ctx);
+    ThreadQueueImplForKSynchronizationObjectWait wait_queue(kernel_ctx, objects,
+                                                            thread_nodes.data(), num_objects);

    {
        // Setup the scheduling lock and sleep.
-        KScopedSchedulerLockAndSleep slp{kernel_ctx, thread, timeout};
+        KScopedSchedulerLockAndSleep slp(kernel_ctx, thread, timeout);
+
+        // Check if the thread should terminate.
+        if (thread->IsTerminationRequested()) {
+            slp.CancelSleep();
+            return ResultTerminationRequested;
+        }

        // Check if any of the objects are already signaled.
        for (auto i = 0; i < num_objects; ++i) {
@@ -48,12 +111,6 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
            return ResultTimedOut;
        }

-        // Check if the thread should terminate.
-        if (thread->IsTerminationRequested()) {
-            slp.CancelSleep();
-            return ResultTerminationRequested;
-        }
-
        // Check if waiting was canceled.
        if (thread->IsWaitCancelled()) {
            slp.CancelSleep();
@@ -66,73 +123,25 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
            thread_nodes[i].thread = thread;
            thread_nodes[i].next = nullptr;

-            if (objects[i]->thread_list_tail == nullptr) {
-                objects[i]->thread_list_head = std::addressof(thread_nodes[i]);
-            } else {
-                objects[i]->thread_list_tail->next = std::addressof(thread_nodes[i]);
-            }
-
-            objects[i]->thread_list_tail = std::addressof(thread_nodes[i]);
+            objects[i]->LinkNode(std::addressof(thread_nodes[i]));
        }

-        // For debugging only
-        thread->SetWaitObjectsForDebugging({objects, static_cast<std::size_t>(num_objects)});
-
-        // Mark the thread as waiting.
+        // Mark the thread as cancellable.
        thread->SetCancellable();
-        thread->SetSyncedObject(nullptr, ResultTimedOut);
-        thread->SetState(ThreadState::Waiting);
+
+        // Clear the thread's synced index.
+        thread->SetSyncedIndex(-1);
+
+        // Wait for an object to be signaled.
+        thread->BeginWait(std::addressof(wait_queue));
        thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Synchronization);
    }

-    // The lock/sleep is done, so we should be able to get our result.
-
-    // Thread is no longer cancellable.
-    thread->ClearCancellable();
-
-    // For debugging only
-    thread->SetWaitObjectsForDebugging({});
-
-    // Cancel the timer as needed.
-    kernel_ctx.TimeManager().UnscheduleTimeEvent(thread);
+    // Set the output index.
+    *out_index = thread->GetSyncedIndex();

    // Get the wait result.
-    ResultCode wait_result{ResultSuccess};
-    s32 sync_index = -1;
-    {
-        KScopedSchedulerLock lock(kernel_ctx);
-        KSynchronizationObject* synced_obj;
-        wait_result = thread->GetWaitResult(std::addressof(synced_obj));
-
-        for (auto i = 0; i < num_objects; ++i) {
-            // Unlink the object from the list.
-            ThreadListNode* prev_ptr =
-                reinterpret_cast<ThreadListNode*>(std::addressof(objects[i]->thread_list_head));
-            ThreadListNode* prev_val = nullptr;
-            ThreadListNode *prev, *tail_prev;
-
-            do {
-                prev = prev_ptr;
-                prev_ptr = prev_ptr->next;
-                tail_prev = prev_val;
-                prev_val = prev_ptr;
-            } while (prev_ptr != std::addressof(thread_nodes[i]));
-
-            if (objects[i]->thread_list_tail == std::addressof(thread_nodes[i])) {
-                objects[i]->thread_list_tail = tail_prev;
-            }
-
-            prev->next = thread_nodes[i].next;
-
-            if (objects[i] == synced_obj) {
-                sync_index = i;
-            }
-        }
-    }
-
-    // Set output.
-    *out_index = sync_index;
-    return wait_result;
+    return thread->GetWaitResult();
 }

 KSynchronizationObject::KSynchronizationObject(KernelCore& kernel_)
@@ -141,7 +150,7 @@ KSynchronizationObject::KSynchronizationObject(KernelCore& kernel_)
 KSynchronizationObject::~KSynchronizationObject() = default;

 void KSynchronizationObject::NotifyAvailable(ResultCode result) {
-    KScopedSchedulerLock lock(kernel);
+    KScopedSchedulerLock sl(kernel);

    // If we're not signaled, we've nothing to notify.
    if (!this->IsSignaled()) {
@@ -150,11 +159,7 @@ void KSynchronizationObject::NotifyAvailable(ResultCode result) {

    // Iterate over each thread.
    for (auto* cur_node = thread_list_head; cur_node != nullptr; cur_node = cur_node->next) {
-        KThread* thread = cur_node->thread;
-        if (thread->GetState() == ThreadState::Waiting) {
-            thread->SetSyncedObject(this, result);
-            thread->SetState(ThreadState::Runnable);
-        }
+        cur_node->thread->NotifyAvailable(this, result);
    }
 }

--- a/src/core/hle/kernel/k_synchronization_object.h
+++ b/src/core/hle/kernel/k_synchronization_object.h
@@ -35,6 +35,38 @@ public:

    [[nodiscard]] std::vector<KThread*> GetWaitingThreadsForDebugging() const;

+    void LinkNode(ThreadListNode* node_) {
+        // Link the node to the list.
+        if (thread_list_tail == nullptr) {
+            thread_list_head = node_;
+        } else {
+            thread_list_tail->next = node_;
+        }
+
+        thread_list_tail = node_;
+    }
+
+    void UnlinkNode(ThreadListNode* node_) {
+        // Unlink the node from the list.
+        ThreadListNode* prev_ptr =
+            reinterpret_cast<ThreadListNode*>(std::addressof(thread_list_head));
+        ThreadListNode* prev_val = nullptr;
+        ThreadListNode *prev, *tail_prev;
+
+        do {
+            prev = prev_ptr;
+            prev_ptr = prev_ptr->next;
+            tail_prev = prev_val;
+            prev_val = prev_ptr;
+        } while (prev_ptr != node_);
+
+        if (thread_list_tail == node_) {
+            thread_list_tail = tail_prev;
+        }
+
+        prev->next = node_->next;
+    }
+
 protected:
    explicit KSynchronizationObject(KernelCore& kernel);
    ~KSynchronizationObject() override;
--- a/src/core/hle/kernel/k_thread.cpp
+++ b/src/core/hle/kernel/k_thread.cpp
@@ -13,6 +13,9 @@
 #include "common/common_types.h"
 #include "common/fiber.h"
 #include "common/logging/log.h"
+#include "common/scope_exit.h"
+#include "common/settings.h"
+#include "common/thread_queue_list.h"
 #include "core/core.h"
 #include "core/cpu_manager.h"
 #include "core/hardware_properties.h"
@@ -23,6 +26,7 @@
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_system_control.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"
@@ -47,6 +51,7 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,
                                 VAddr entry_point, u64 arg) {
    context = {};
    context.cpu_registers[0] = arg;
+    context.cpu_registers[18] = Kernel::KSystemControl::GenerateRandomU64() | 1;
    context.pc = entry_point;
    context.sp = stack_top;
    // TODO(merry): Perform a hardware test to determine the below value.
@@ -56,6 +61,34 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,

 namespace Kernel {

+namespace {
+
+class ThreadQueueImplForKThreadSleep final : public KThreadQueueWithoutEndWait {
+public:
+    explicit ThreadQueueImplForKThreadSleep(KernelCore& kernel_)
+        : KThreadQueueWithoutEndWait(kernel_) {}
+};
+
+class ThreadQueueImplForKThreadSetProperty final : public KThreadQueue {
+public:
+    explicit ThreadQueueImplForKThreadSetProperty(KernelCore& kernel_, KThread::WaiterList* wl)
+        : KThreadQueue(kernel_), m_wait_list(wl) {}
+
+    void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                    bool cancel_timer_task) override {
+        // Remove the thread from the wait list.
+        m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread));
+
+        // Invoke the base cancel wait handler.
+        KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
+    }
+
+private:
+    KThread::WaiterList* m_wait_list;
+};
+
+} // namespace
+
 KThread::KThread(KernelCore& kernel_)
    : KAutoObjectWithSlabHeapAndContainer{kernel_}, activity_pause_lock{kernel_} {}
 KThread::~KThread() = default;
@@ -82,6 +115,8 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
        [[fallthrough]];
    case ThreadType::HighPriority:
        [[fallthrough]];
+    case ThreadType::Dummy:
+        [[fallthrough]];
    case ThreadType::User:
        ASSERT(((owner == nullptr) ||
                (owner->GetCoreMask() | (1ULL << virt_core)) == owner->GetCoreMask()));
@@ -127,11 +162,8 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
    priority = prio;
    base_priority = prio;

-    // Set sync object and waiting lock to null.
-    synced_object = nullptr;
-
    // Initialize sleeping queue.
-    sleeping_queue = nullptr;
+    wait_queue = nullptr;

    // Set suspend flags.
    suspend_request_flags = 0;
@@ -184,7 +216,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
    // Setup the stack parameters.
    StackParameters& sp = GetStackParameters();
    sp.cur_thread = this;
-    sp.disable_count = 1;
+    sp.disable_count = 0;
    SetInExceptionHandler();

    // Set thread ID.
@@ -211,15 +243,16 @@ ResultCode KThread::InitializeThread(KThread* thread, KThreadFunction func, uint
    // Initialize the thread.
    R_TRY(thread->Initialize(func, arg, user_stack_top, prio, core, owner, type));

-    // Initialize host context.
+    // Initialize emulation parameters.
    thread->host_context =
        std::make_shared<Common::Fiber>(std::move(init_func), init_func_parameter);
+    thread->is_single_core = !Settings::values.use_multi_core.GetValue();

    return ResultSuccess;
 }

 ResultCode KThread::InitializeDummyThread(KThread* thread) {
-    return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Main);
+    return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Dummy);
 }

 ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) {
@@ -273,11 +306,14 @@ void KThread::Finalize() {

        auto it = waiter_list.begin();
        while (it != waiter_list.end()) {
-            // The thread shouldn't be a kernel waiter.
+            // Clear the lock owner
            it->SetLockOwner(nullptr);
-            it->SetSyncedObject(nullptr, ResultInvalidState);
-            it->Wakeup();
+
+            // Erase the waiter from our list.
            it = waiter_list.erase(it);
+
+            // Cancel the thread's wait.
+            it->CancelWait(ResultInvalidState, true);
        }
    }

@@ -294,15 +330,12 @@ bool KThread::IsSignaled() const {
    return signaled;
 }

-void KThread::Wakeup() {
-    KScopedSchedulerLock sl{kernel};
+void KThread::OnTimer() {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());

+    // If we're waiting, cancel the wait.
    if (GetState() == ThreadState::Waiting) {
-        if (sleeping_queue != nullptr) {
-            sleeping_queue->WakeupThread(this);
-        } else {
-            SetState(ThreadState::Runnable);
-        }
+        wait_queue->CancelWait(this, ResultTimedOut, false);
    }
 }

@@ -327,7 +360,7 @@ void KThread::StartTermination() {

    // Signal.
    signaled = true;
-    NotifyAvailable();
+    KSynchronizationObject::NotifyAvailable();

    // Clear previous thread in KScheduler.
    KScheduler::ClearPreviousThread(kernel, this);
@@ -475,30 +508,32 @@ ResultCode KThread::GetPhysicalCoreMask(s32* out_ideal_core, u64* out_affinity_m
    return ResultSuccess;
 }

-ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
+ResultCode KThread::SetCoreMask(s32 core_id_, u64 v_affinity_mask) {
    ASSERT(parent != nullptr);
    ASSERT(v_affinity_mask != 0);
-    KScopedLightLock lk{activity_pause_lock};
+    KScopedLightLock lk(activity_pause_lock);

    // Set the core mask.
    u64 p_affinity_mask = 0;
    {
-        KScopedSchedulerLock sl{kernel};
+        KScopedSchedulerLock sl(kernel);
        ASSERT(num_core_migration_disables >= 0);

-        // If the core id is no-update magic, preserve the ideal core id.
-        if (cpu_core_id == Svc::IdealCoreNoUpdate) {
-            cpu_core_id = virtual_ideal_core_id;
-            R_UNLESS(((1ULL << cpu_core_id) & v_affinity_mask) != 0, ResultInvalidCombination);
+        // If we're updating, set our ideal virtual core.
+        if (core_id_ != Svc::IdealCoreNoUpdate) {
+            virtual_ideal_core_id = core_id_;
+        } else {
+            // Preserve our ideal core id.
+            core_id_ = virtual_ideal_core_id;
+            R_UNLESS(((1ULL << core_id_) & v_affinity_mask) != 0, ResultInvalidCombination);
        }

-        // Set the virtual core/affinity mask.
-        virtual_ideal_core_id = cpu_core_id;
+        // Set our affinity mask.
        virtual_affinity_mask = v_affinity_mask;

        // Translate the virtual core to a physical core.
-        if (cpu_core_id >= 0) {
-            cpu_core_id = Core::Hardware::VirtualToPhysicalCoreMap[cpu_core_id];
+        if (core_id_ >= 0) {
+            core_id_ = Core::Hardware::VirtualToPhysicalCoreMap[core_id_];
        }

        // Translate the virtual affinity mask to a physical one.
@@ -513,7 +548,7 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
            const KAffinityMask old_mask = physical_affinity_mask;

            // Set our new ideals.
-            physical_ideal_core_id = cpu_core_id;
+            physical_ideal_core_id = core_id_;
            physical_affinity_mask.SetAffinityMask(p_affinity_mask);

            if (physical_affinity_mask.GetAffinityMask() != old_mask.GetAffinityMask()) {
@@ -531,18 +566,18 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
            }
        } else {
            // Otherwise, we edit the original affinity for restoration later.
-            original_physical_ideal_core_id = cpu_core_id;
+            original_physical_ideal_core_id = core_id_;
            original_physical_affinity_mask.SetAffinityMask(p_affinity_mask);
        }
    }

    // Update the pinned waiter list.
+    ThreadQueueImplForKThreadSetProperty wait_queue_(kernel, std::addressof(pinned_waiter_list));
    {
        bool retry_update{};
-        bool thread_is_pinned{};
        do {
            // Lock the scheduler.
-            KScopedSchedulerLock sl{kernel};
+            KScopedSchedulerLock sl(kernel);

            // Don't do any further management if our termination has been requested.
            R_SUCCEED_IF(IsTerminationRequested());
@@ -570,12 +605,9 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
                    R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
                             ResultTerminationRequested);

-                    // Note that the thread was pinned.
-                    thread_is_pinned = true;
-
                    // Wait until the thread isn't pinned any more.
                    pinned_waiter_list.push_back(GetCurrentThread(kernel));
-                    GetCurrentThread(kernel).SetState(ThreadState::Waiting);
+                    GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue_));
                } else {
                    // If the thread isn't pinned, release the scheduler lock and retry until it's
                    // not current.
@@ -583,16 +615,6 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
                }
            }
        } while (retry_update);
-
-        // If the thread was pinned, it no longer is, and we should remove the current thread from
-        // our waiter list.
-        if (thread_is_pinned) {
-            // Lock the scheduler.
-            KScopedSchedulerLock sl{kernel};
-
-            // Remove from the list.
-            pinned_waiter_list.erase(pinned_waiter_list.iterator_to(GetCurrentThread(kernel)));
-        }
    }

    return ResultSuccess;
@@ -641,15 +663,9 @@ void KThread::WaitCancel() {
    KScopedSchedulerLock sl{kernel};

    // Check if we're waiting and cancellable.
-    if (GetState() == ThreadState::Waiting && cancellable) {
-        if (sleeping_queue != nullptr) {
-            sleeping_queue->WakeupThread(this);
-            wait_cancelled = true;
-        } else {
-            SetSyncedObject(nullptr, ResultCancelled);
-            SetState(ThreadState::Runnable);
-            wait_cancelled = false;
-        }
+    if (this->GetState() == ThreadState::Waiting && cancellable) {
+        wait_cancelled = false;
+        wait_queue->CancelWait(this, ResultCancelled, true);
    } else {
        // Otherwise, note that we cancelled a wait.
        wait_cancelled = true;
@@ -700,60 +716,59 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
    // Set the activity.
    {
        // Lock the scheduler.
-        KScopedSchedulerLock sl{kernel};
+        KScopedSchedulerLock sl(kernel);

        // Verify our state.
-        const auto cur_state = GetState();
+        const auto cur_state = this->GetState();
        R_UNLESS((cur_state == ThreadState::Waiting || cur_state == ThreadState::Runnable),
                 ResultInvalidState);

        // Either pause or resume.
        if (activity == Svc::ThreadActivity::Paused) {
            // Verify that we're not suspended.
-            R_UNLESS(!IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
+            R_UNLESS(!this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState);

            // Suspend.
-            RequestSuspend(SuspendType::Thread);
+            this->RequestSuspend(SuspendType::Thread);
        } else {
            ASSERT(activity == Svc::ThreadActivity::Runnable);

            // Verify that we're suspended.
-            R_UNLESS(IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
+            R_UNLESS(this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState);

            // Resume.
-            Resume(SuspendType::Thread);
+            this->Resume(SuspendType::Thread);
        }
    }

    // If the thread is now paused, update the pinned waiter list.
    if (activity == Svc::ThreadActivity::Paused) {
-        bool thread_is_pinned{};
-        bool thread_is_current{};
+        ThreadQueueImplForKThreadSetProperty wait_queue_(kernel,
+                                                         std::addressof(pinned_waiter_list));
+
+        bool thread_is_current;
        do {
            // Lock the scheduler.
-            KScopedSchedulerLock sl{kernel};
+            KScopedSchedulerLock sl(kernel);

            // Don't do any further management if our termination has been requested.
-            R_SUCCEED_IF(IsTerminationRequested());
+            R_SUCCEED_IF(this->IsTerminationRequested());
+
+            // By default, treat the thread as not current.
+            thread_is_current = false;

            // Check whether the thread is pinned.
-            if (GetStackParameters().is_pinned) {
+            if (this->GetStackParameters().is_pinned) {
                // Verify that the current thread isn't terminating.
                R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
                         ResultTerminationRequested);

-                // Note that the thread was pinned and not current.
-                thread_is_pinned = true;
-                thread_is_current = false;
-
                // Wait until the thread isn't pinned any more.
                pinned_waiter_list.push_back(GetCurrentThread(kernel));
-                GetCurrentThread(kernel).SetState(ThreadState::Waiting);
+                GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue_));
            } else {
                // Check if the thread is currently running.
                // If it is, we'll need to retry.
-                thread_is_current = false;
-
                for (auto i = 0; i < static_cast<s32>(Core::Hardware::NUM_CPU_CORES); ++i) {
                    if (kernel.Scheduler(i).GetCurrentThread() == this) {
                        thread_is_current = true;
@@ -762,16 +777,6 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
                }
            }
        } while (thread_is_current);
-
-        // If the thread was pinned, it no longer is, and we should remove the current thread from
-        // our waiter list.
-        if (thread_is_pinned) {
-            // Lock the scheduler.
-            KScopedSchedulerLock sl{kernel};
-
-            // Remove from the list.
-            pinned_waiter_list.erase(pinned_waiter_list.iterator_to(GetCurrentThread(kernel)));
-        }
    }

    return ResultSuccess;
@@ -966,6 +971,9 @@ ResultCode KThread::Run() {

        // Set our state and finish.
        SetState(ThreadState::Runnable);
+
+        DisableDispatch();
+
        return ResultSuccess;
    }
 }
@@ -996,29 +1004,63 @@ ResultCode KThread::Sleep(s64 timeout) {
    ASSERT(this == GetCurrentThreadPointer(kernel));
    ASSERT(timeout > 0);

+    ThreadQueueImplForKThreadSleep wait_queue_(kernel);
    {
        // Setup the scheduling lock and sleep.
-        KScopedSchedulerLockAndSleep slp{kernel, this, timeout};
+        KScopedSchedulerLockAndSleep slp(kernel, this, timeout);

        // Check if the thread should terminate.
-        if (IsTerminationRequested()) {
+        if (this->IsTerminationRequested()) {
            slp.CancelSleep();
            return ResultTerminationRequested;
        }

-        // Mark the thread as waiting.
-        SetState(ThreadState::Waiting);
+        // Wait for the sleep to end.
+        this->BeginWait(std::addressof(wait_queue_));
        SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Sleep);
    }

-    // The lock/sleep is done.
-
-    // Cancel the timer.
-    kernel.TimeManager().UnscheduleTimeEvent(this);
-
    return ResultSuccess;
 }

+void KThread::BeginWait(KThreadQueue* queue) {
+    // Set our state as waiting.
+    SetState(ThreadState::Waiting);
+
+    // Set our wait queue.
+    wait_queue = queue;
+}
+
+void KThread::NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_) {
+    // Lock the scheduler.
+    KScopedSchedulerLock sl(kernel);
+
+    // If we're waiting, notify our queue that we're available.
+    if (GetState() == ThreadState::Waiting) {
+        wait_queue->NotifyAvailable(this, signaled_object, wait_result_);
+    }
+}
+
+void KThread::EndWait(ResultCode wait_result_) {
+    // Lock the scheduler.
+    KScopedSchedulerLock sl(kernel);
+
+    // If we're waiting, notify our queue that we're available.
+    if (GetState() == ThreadState::Waiting) {
+        wait_queue->EndWait(this, wait_result_);
+    }
+}
+
+void KThread::CancelWait(ResultCode wait_result_, bool cancel_timer_task) {
+    // Lock the scheduler.
+    KScopedSchedulerLock sl(kernel);
+
+    // If we're waiting, notify our queue that we're available.
+    if (GetState() == ThreadState::Waiting) {
+        wait_queue->CancelWait(this, wait_result_, cancel_timer_task);
+    }
+}
+
 void KThread::SetState(ThreadState state) {
    KScopedSchedulerLock sl{kernel};

@@ -1050,4 +1092,26 @@ s32 GetCurrentCoreId(KernelCore& kernel) {
    return GetCurrentThread(kernel).GetCurrentCore();
 }

+KScopedDisableDispatch::~KScopedDisableDispatch() {
+    // If we are shutting down the kernel, none of this is relevant anymore.
+    if (kernel.IsShuttingDown()) {
+        return;
+    }
+
+    // Skip the reschedule if single-core, as dispatch tracking is disabled here.
+    if (!Settings::values.use_multi_core.GetValue()) {
+        return;
+    }
+
+    if (GetCurrentThread(kernel).GetDisableDispatchCount() <= 1) {
+        auto scheduler = kernel.CurrentScheduler();
+
+        if (scheduler) {
+            scheduler->RescheduleCurrentCore();
+        }
+    } else {
+        GetCurrentThread(kernel).EnableDispatch();
+    }
+}
+
 } // namespace Kernel
--- a/src/core/hle/kernel/k_thread.h
+++ b/src/core/hle/kernel/k_thread.h
@@ -48,6 +48,7 @@ enum class ThreadType : u32 {
    Kernel = 1,
    HighPriority = 2,
    User = 3,
+    Dummy = 100, // Special thread type for emulation purposes only
 };
 DECLARE_ENUM_FLAG_OPERATORS(ThreadType);

@@ -161,8 +162,6 @@ public:
        }
    }

-    void Wakeup();
-
    void SetBasePriority(s32 value);

    [[nodiscard]] ResultCode Run();
@@ -197,13 +196,19 @@ public:

    void Suspend();

-    void SetSyncedObject(KSynchronizationObject* obj, ResultCode wait_res) {
-        synced_object = obj;
+    constexpr void SetSyncedIndex(s32 index) {
+        synced_index = index;
+    }
+
+    [[nodiscard]] constexpr s32 GetSyncedIndex() const {
+        return synced_index;
+    }
+
+    constexpr void SetWaitResult(ResultCode wait_res) {
        wait_result = wait_res;
    }

-    [[nodiscard]] ResultCode GetWaitResult(KSynchronizationObject** out) const {
-        *out = synced_object;
+    [[nodiscard]] constexpr ResultCode GetWaitResult() const {
        return wait_result;
    }

@@ -374,6 +379,8 @@ public:

    [[nodiscard]] bool IsSignaled() const override;

+    void OnTimer();
+
    static void PostDestroy(uintptr_t arg);

    [[nodiscard]] static ResultCode InitializeDummyThread(KThread* thread);
@@ -446,20 +453,39 @@ public:
        return per_core_priority_queue_entry[core];
    }

-    void SetSleepingQueue(KThreadQueue* q) {
-        sleeping_queue = q;
+    [[nodiscard]] bool IsKernelThread() const {
+        return GetActiveCore() == 3;
+    }
+
+    [[nodiscard]] bool IsDispatchTrackingDisabled() const {
+        return is_single_core || IsKernelThread();
    }

    [[nodiscard]] s32 GetDisableDispatchCount() const {
+        if (IsDispatchTrackingDisabled()) {
+            // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
+            return 1;
+        }
+
        return this->GetStackParameters().disable_count;
    }

    void DisableDispatch() {
+        if (IsDispatchTrackingDisabled()) {
+            // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
+            return;
+        }
+
        ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() >= 0);
        this->GetStackParameters().disable_count++;
    }

    void EnableDispatch() {
+        if (IsDispatchTrackingDisabled()) {
+            // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
+            return;
+        }
+
        ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() > 0);
        this->GetStackParameters().disable_count--;
    }
@@ -573,6 +599,15 @@ public:
        address_key_value = val;
    }

+    void ClearWaitQueue() {
+        wait_queue = nullptr;
+    }
+
+    void BeginWait(KThreadQueue* queue);
+    void NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_);
+    void EndWait(ResultCode wait_result_);
+    void CancelWait(ResultCode wait_result_, bool cancel_timer_task);
+
    [[nodiscard]] bool HasWaiters() const {
        return !waiter_list.empty();
    }
@@ -667,7 +702,6 @@ private:
    KAffinityMask physical_affinity_mask{};
    u64 thread_id{};
    std::atomic<s64> cpu_time{};
-    KSynchronizationObject* synced_object{};
    VAddr address_key{};
    KProcess* parent{};
    VAddr kernel_stack_top{};
@@ -677,13 +711,14 @@ private:
    s64 schedule_count{};
    s64 last_scheduled_tick{};
    std::array<QueueEntry, Core::Hardware::NUM_CPU_CORES> per_core_priority_queue_entry{};
-    KThreadQueue* sleeping_queue{};
+    KThreadQueue* wait_queue{};
    WaiterList waiter_list{};
    WaiterList pinned_waiter_list{};
    KThread* lock_owner{};
    u32 address_key_value{};
    u32 suspend_request_flags{};
    u32 suspend_allowed_flags{};
+    s32 synced_index{};
    ResultCode wait_result{ResultSuccess};
    s32 base_priority{};
    s32 physical_ideal_core_id{};
@@ -708,6 +743,7 @@ private:

    // For emulation
    std::shared_ptr<Common::Fiber> host_context{};
+    bool is_single_core{};

    // For debugging
    std::vector<KSynchronizationObject*> wait_objects_for_debugging;
@@ -752,4 +788,20 @@ public:
    }
 };

+class KScopedDisableDispatch {
+public:
+    [[nodiscard]] explicit KScopedDisableDispatch(KernelCore& kernel_) : kernel{kernel_} {
+        // If we are shutting down the kernel, none of this is relevant anymore.
+        if (kernel.IsShuttingDown()) {
+            return;
+        }
+        GetCurrentThread(kernel).DisableDispatch();
+    }
+
+    ~KScopedDisableDispatch();
+
+private:
+    KernelCore& kernel;
+};
+
 } // namespace Kernel
--- a/src/core/hle/kernel/k_thread_queue.cpp
+++ b/src/core/hle/kernel/k_thread_queue.cpp
@@ -0,0 +1,49 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_thread_queue.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/time_manager.h"
+
+namespace Kernel {
+
+void KThreadQueue::NotifyAvailable([[maybe_unused]] KThread* waiting_thread,
+                                   [[maybe_unused]] KSynchronizationObject* signaled_object,
+                                   [[maybe_unused]] ResultCode wait_result) {}
+
+void KThreadQueue::EndWait(KThread* waiting_thread, ResultCode wait_result) {
+    // Set the thread's wait result.
+    waiting_thread->SetWaitResult(wait_result);
+
+    // Set the thread as runnable.
+    waiting_thread->SetState(ThreadState::Runnable);
+
+    // Clear the thread's wait queue.
+    waiting_thread->ClearWaitQueue();
+
+    // Cancel the thread task.
+    kernel.TimeManager().UnscheduleTimeEvent(waiting_thread);
+}
+
+void KThreadQueue::CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                              bool cancel_timer_task) {
+    // Set the thread's wait result.
+    waiting_thread->SetWaitResult(wait_result);
+
+    // Set the thread as runnable.
+    waiting_thread->SetState(ThreadState::Runnable);
+
+    // Clear the thread's wait queue.
+    waiting_thread->ClearWaitQueue();
+
+    // Cancel the thread task.
+    if (cancel_timer_task) {
+        kernel.TimeManager().UnscheduleTimeEvent(waiting_thread);
+    }
+}
+
+void KThreadQueueWithoutEndWait::EndWait([[maybe_unused]] KThread* waiting_thread,
+                                         [[maybe_unused]] ResultCode wait_result) {}
+
+} // namespace Kernel
--- a/src/core/hle/kernel/k_thread_queue.h
+++ b/src/core/hle/kernel/k_thread_queue.h
@@ -4,6 +4,7 @@

 #pragma once

+#include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"

 namespace Kernel {
@@ -11,71 +12,24 @@ namespace Kernel {
 class KThreadQueue {
 public:
    explicit KThreadQueue(KernelCore& kernel_) : kernel{kernel_} {}
+    virtual ~KThreadQueue() = default;

-    bool IsEmpty() const {
-        return wait_list.empty();
-    }
-
-    KThread::WaiterList::iterator begin() {
-        return wait_list.begin();
-    }
-    KThread::WaiterList::iterator end() {
-        return wait_list.end();
-    }
-
-    bool SleepThread(KThread* t) {
-        KScopedSchedulerLock sl{kernel};
-
-        // If the thread needs terminating, don't enqueue it.
-        if (t->IsTerminationRequested()) {
-            return false;
-        }
-
-        // Set the thread's queue and mark it as waiting.
-        t->SetSleepingQueue(this);
-        t->SetState(ThreadState::Waiting);
-
-        // Add the thread to the queue.
-        wait_list.push_back(*t);
-
-        return true;
-    }
-
-    void WakeupThread(KThread* t) {
-        KScopedSchedulerLock sl{kernel};
-
-        // Remove the thread from the queue.
-        wait_list.erase(wait_list.iterator_to(*t));
-
-        // Mark the thread as no longer sleeping.
-        t->SetState(ThreadState::Runnable);
-        t->SetSleepingQueue(nullptr);
-    }
-
-    KThread* WakeupFrontThread() {
-        KScopedSchedulerLock sl{kernel};
-
-        if (wait_list.empty()) {
-            return nullptr;
-        } else {
-            // Remove the thread from the queue.
-            auto it = wait_list.begin();
-            KThread* thread = std::addressof(*it);
-            wait_list.erase(it);
-
-            ASSERT(thread->GetState() == ThreadState::Waiting);
-
-            // Mark the thread as no longer sleeping.
-            thread->SetState(ThreadState::Runnable);
-            thread->SetSleepingQueue(nullptr);
-
-            return thread;
-        }
-    }
+    virtual void NotifyAvailable(KThread* waiting_thread, KSynchronizationObject* signaled_object,
+                                 ResultCode wait_result);
+    virtual void EndWait(KThread* waiting_thread, ResultCode wait_result);
+    virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
+                            bool cancel_timer_task);

 private:
    KernelCore& kernel;
    KThread::WaiterList wait_list{};
 };

+class KThreadQueueWithoutEndWait : public KThreadQueue {
+public:
+    explicit KThreadQueueWithoutEndWait(KernelCore& kernel_) : KThreadQueue(kernel_) {}
+
+    void EndWait(KThread* waiting_thread, ResultCode wait_result) override final;
+};
+
 } // namespace Kernel
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -14,6 +14,7 @@
 #include "common/assert.h"
 #include "common/logging/log.h"
 #include "common/microprofile.h"
+#include "common/scope_exit.h"
 #include "common/thread.h"
 #include "common/thread_worker.h"
 #include "core/arm/arm_interface.h"
@@ -83,12 +84,16 @@ struct KernelCore::Impl {
    }

    void InitializeCores() {
-        for (auto& core : cores) {
-            core.Initialize(current_process->Is64BitProcess());
+        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
+            cores[core_id].Initialize(current_process->Is64BitProcess());
+            system.Memory().SetCurrentPageTable(*current_process, core_id);
        }
    }

    void Shutdown() {
+        is_shutting_down.store(true, std::memory_order_relaxed);
+        SCOPE_EXIT({ is_shutting_down.store(false, std::memory_order_relaxed); });
+
        process_list.clear();

        // Close all open server ports.
@@ -123,15 +128,6 @@ struct KernelCore::Impl {
        next_user_process_id = KProcess::ProcessIDMin;
        next_thread_id = 1;

-        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
-            if (suspend_threads[core_id]) {
-                suspend_threads[core_id]->Close();
-                suspend_threads[core_id] = nullptr;
-            }
-
-            schedulers[core_id].reset();
-        }
-
        cores.clear();

        global_handle_table->Finalize();
@@ -159,6 +155,16 @@ struct KernelCore::Impl {
        CleanupObject(time_shared_mem);
        CleanupObject(system_resource_limit);

+        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
+            if (suspend_threads[core_id]) {
+                suspend_threads[core_id]->Close();
+                suspend_threads[core_id] = nullptr;
+            }
+
+            schedulers[core_id]->Finalize();
+            schedulers[core_id].reset();
+        }
+
        // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
        next_host_thread_id = Core::Hardware::NUM_CPU_CORES;

@@ -176,7 +182,10 @@ struct KernelCore::Impl {
        // Shutdown all processes.
        if (current_process) {
            current_process->Finalize();
-            current_process->Close();
+            // current_process->Close();
+            // TODO: The current process should be destroyed based on accurate ref counting after
+            // calling Close(). Adding a manual Destroy() call instead to avoid a memory leak.
+            current_process->Destroy();
            current_process = nullptr;
        }

@@ -245,13 +254,11 @@ struct KernelCore::Impl {
                    KScopedSchedulerLock lock(kernel);
                    global_scheduler_context->PreemptThreads();
                }
-                const auto time_interval = std::chrono::nanoseconds{
-                    Core::Timing::msToCycles(std::chrono::milliseconds(10))};
+                const auto time_interval = std::chrono::nanoseconds{std::chrono::milliseconds(10)};
                system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
            });

-        const auto time_interval =
-            std::chrono::nanoseconds{Core::Timing::msToCycles(std::chrono::milliseconds(10))};
+        const auto time_interval = std::chrono::nanoseconds{std::chrono::milliseconds(10)};
        system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
    }

@@ -267,14 +274,6 @@ struct KernelCore::Impl {

    void MakeCurrentProcess(KProcess* process) {
        current_process = process;
-        if (process == nullptr) {
-            return;
-        }
-
-        const u32 core_id = GetCurrentHostThreadID();
-        if (core_id < Core::Hardware::NUM_CPU_CORES) {
-            system.Memory().SetCurrentPageTable(*process, core_id);
-        }
    }

    static inline thread_local u32 host_thread_id = UINT32_MAX;
@@ -344,7 +343,16 @@ struct KernelCore::Impl {
        is_phantom_mode_for_singlecore = value;
    }

+    bool IsShuttingDown() const {
+        return is_shutting_down.load(std::memory_order_relaxed);
+    }
+
    KThread* GetCurrentEmuThread() {
+        // If we are shutting down the kernel, none of this is relevant anymore.
+        if (IsShuttingDown()) {
+            return {};
+        }
+
        const auto thread_id = GetCurrentHostThreadID();
        if (thread_id >= Core::Hardware::NUM_CPU_CORES) {
            return GetHostDummyThread();
@@ -760,6 +768,7 @@ struct KernelCore::Impl {
    std::vector<std::unique_ptr<KThread>> dummy_threads;

    bool is_multicore{};
+    std::atomic_bool is_shutting_down{};
    bool is_phantom_mode_for_singlecore{};
    u32 single_core_thread_id{};

@@ -845,16 +854,20 @@ const Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) const {
    return impl->cores[id];
 }

+size_t KernelCore::CurrentPhysicalCoreIndex() const {
+    const u32 core_id = impl->GetCurrentHostThreadID();
+    if (core_id >= Core::Hardware::NUM_CPU_CORES) {
+        return Core::Hardware::NUM_CPU_CORES - 1;
+    }
+    return core_id;
+}
+
 Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() {
-    u32 core_id = impl->GetCurrentHostThreadID();
-    ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
-    return impl->cores[core_id];
+    return impl->cores[CurrentPhysicalCoreIndex()];
 }

 const Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() const {
-    u32 core_id = impl->GetCurrentHostThreadID();
-    ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
-    return impl->cores[core_id];
+    return impl->cores[CurrentPhysicalCoreIndex()];
 }

 Kernel::KScheduler* KernelCore::CurrentScheduler() {
@@ -1057,6 +1070,9 @@ void KernelCore::Suspend(bool in_suspention) {
            impl->suspend_threads[core_id]->SetState(state);
            impl->suspend_threads[core_id]->SetWaitReasonForDebugging(
                ThreadWaitReasonForDebugging::Suspended);
+            if (!should_suspend) {
+                impl->suspend_threads[core_id]->DisableDispatch();
+            }
        }
    }
 }
@@ -1065,19 +1081,21 @@ bool KernelCore::IsMulticore() const {
    return impl->is_multicore;
 }

+bool KernelCore::IsShuttingDown() const {
+    return impl->IsShuttingDown();
+}
+
 void KernelCore::ExceptionalExit() {
    exception_exited = true;
    Suspend(true);
 }

 void KernelCore::EnterSVCProfile() {
-    std::size_t core = impl->GetCurrentHostThreadID();
-    impl->svc_ticks[core] = MicroProfileEnter(MICROPROFILE_TOKEN(Kernel_SVC));
+    impl->svc_ticks[CurrentPhysicalCoreIndex()] = MicroProfileEnter(MICROPROFILE_TOKEN(Kernel_SVC));
 }

 void KernelCore::ExitSVCProfile() {
-    std::size_t core = impl->GetCurrentHostThreadID();
-    MicroProfileLeave(MICROPROFILE_TOKEN(Kernel_SVC), impl->svc_ticks[core]);
+    MicroProfileLeave(MICROPROFILE_TOKEN(Kernel_SVC), impl->svc_ticks[CurrentPhysicalCoreIndex()]);
 }

 std::weak_ptr<Kernel::ServiceThread> KernelCore::CreateServiceThread(const std::string& name) {
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -53,6 +53,7 @@ class KSharedMemoryInfo;
 class KThread;
 class KTransferMemory;
 class KWritableEvent;
+class KCodeMemory;
 class PhysicalCore;
 class ServiceThread;
 class Synchronization;
@@ -148,6 +149,9 @@ public:
    /// Gets the an instance of the respective physical CPU core.
    const Kernel::PhysicalCore& PhysicalCore(std::size_t id) const;

+    /// Gets the current physical core index for the running host thread.
+    std::size_t CurrentPhysicalCoreIndex() const;
+
    /// Gets the sole instance of the Scheduler at the current running core.
    Kernel::KScheduler* CurrentScheduler();

@@ -271,6 +275,8 @@ public:

    bool IsMulticore() const;

+    bool IsShuttingDown() const;
+
    void EnterSVCProfile();

    void ExitSVCProfile();
@@ -326,6 +332,8 @@ public:
            return slab_heap_container->transfer_memory;
        } else if constexpr (std::is_same_v<T, KWritableEvent>) {
            return slab_heap_container->writeable_event;
+        } else if constexpr (std::is_same_v<T, KCodeMemory>) {
+            return slab_heap_container->code_memory;
        }
    }

@@ -377,6 +385,7 @@ private:
        KSlabHeap<KThread> thread;
        KSlabHeap<KTransferMemory> transfer_memory;
        KSlabHeap<KWritableEvent> writeable_event;
+        KSlabHeap<KCodeMemory> code_memory;
    };

    std::unique_ptr<SlabHeapContainer> slab_heap_container;
--- a/src/core/hle/kernel/service_thread.cpp
+++ b/src/core/hle/kernel/service_thread.cpp
@@ -25,24 +25,27 @@ public:
    void QueueSyncRequest(KSession& session, std::shared_ptr<HLERequestContext>&& context);

 private:
-    std::vector<std::thread> threads;
+    std::vector<std::jthread> threads;
    std::queue<std::function<void()>> requests;
    std::mutex queue_mutex;
-    std::condition_variable condition;
+    std::condition_variable_any condition;
    const std::string service_name;
-    bool stop{};
 };

 ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std::string& name)
    : service_name{name} {
-    for (std::size_t i = 0; i < num_threads; ++i)
-        threads.emplace_back([this, &kernel] {
+    for (std::size_t i = 0; i < num_threads; ++i) {
+        threads.emplace_back([this, &kernel](std::stop_token stop_token) {
            Common::SetCurrentThreadName(std::string{"yuzu:HleService:" + service_name}.c_str());

            // Wait for first request before trying to acquire a render context
            {
                std::unique_lock lock{queue_mutex};
-                condition.wait(lock, [this] { return stop || !requests.empty(); });
+                condition.wait(lock, stop_token, [this] { return !requests.empty(); });
+            }
+
+            if (stop_token.stop_requested()) {
+                return;
            }

            kernel.RegisterHostThread();
@@ -52,10 +55,16 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std

                {
                    std::unique_lock lock{queue_mutex};
-                    condition.wait(lock, [this] { return stop || !requests.empty(); });
-                    if (stop || requests.empty()) {
+                    condition.wait(lock, stop_token, [this] { return !requests.empty(); });
+
+                    if (stop_token.stop_requested()) {
                        return;
                    }
+
+                    if (requests.empty()) {
+                        continue;
+                    }
+
                    task = std::move(requests.front());
                    requests.pop();
                }
@@ -63,6 +72,7 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std
                task();
            }
        });
+    }
 }

 void ServiceThread::Impl::QueueSyncRequest(KSession& session,
@@ -88,12 +98,9 @@ void ServiceThread::Impl::QueueSyncRequest(KSession& session,
 }

 ServiceThread::Impl::~Impl() {
-    {
-        std::unique_lock lock{queue_mutex};
-        stop = true;
-    }
    condition.notify_all();
-    for (std::thread& thread : threads) {
+    for (auto& thread : threads) {
+        thread.request_stop();
        thread.join();
    }
 }
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -18,6 +18,7 @@
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_client_port.h"
 #include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_code_memory.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_memory_block.h"
@@ -31,6 +32,7 @@
 #include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/k_transfer_memory.h"
 #include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
@@ -39,7 +41,6 @@
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/svc_types.h"
 #include "core/hle/kernel/svc_wrap.h"
-#include "core/hle/lock.h"
 #include "core/hle/result.h"
 #include "core/memory.h"
 #include "core/reporter.h"
@@ -134,25 +135,15 @@ enum class ResourceLimitValueType {
 } // Anonymous namespace

 /// Set the process heap to a given Size. It can both extend and shrink the heap.
-static ResultCode SetHeapSize(Core::System& system, VAddr* heap_addr, u64 heap_size) {
-    std::lock_guard lock{HLE::g_hle_lock};
-    LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", heap_size);
+static ResultCode SetHeapSize(Core::System& system, VAddr* out_address, u64 size) {
+    LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", size);

-    // Size must be a multiple of 0x200000 (2MB) and be equal to or less than 8GB.
-    if ((heap_size % 0x200000) != 0) {
-        LOG_ERROR(Kernel_SVC, "The heap size is not a multiple of 2MB, heap_size=0x{:016X}",
-                  heap_size);
-        return ResultInvalidSize;
-    }
+    // Validate size.
+    R_UNLESS(Common::IsAligned(size, HeapSizeAlignment), ResultInvalidSize);
+    R_UNLESS(size < MainMemorySizeMax, ResultInvalidSize);

-    if (heap_size >= 0x200000000) {
-        LOG_ERROR(Kernel_SVC, "The heap size is not less than 8GB, heap_size=0x{:016X}", heap_size);
-        return ResultInvalidSize;
-    }
-
-    auto& page_table{system.Kernel().CurrentProcess()->PageTable()};
-
-    CASCADE_RESULT(*heap_addr, page_table.SetHeapSize(heap_size));
+    // Set the heap size.
+    R_TRY(system.Kernel().CurrentProcess()->PageTable().SetHeapSize(out_address, size));

    return ResultSuccess;
 }
@@ -164,9 +155,38 @@ static ResultCode SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_s
    return result;
 }

+constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
+    switch (perm) {
+    case MemoryPermission::None:
+    case MemoryPermission::Read:
+    case MemoryPermission::ReadWrite:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
+                                      MemoryPermission perm) {
+    // Validate address / size.
+    R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
+
+    // Validate the permission.
+    R_UNLESS(IsValidSetMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+    // Validate that the region is in range for the current process.
+    auto& page_table = system.Kernel().CurrentProcess()->PageTable();
+    R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
+
+    // Set the memory attribute.
+    return page_table.SetMemoryPermission(address, size, perm);
+}
+
 static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
                                     u32 attribute) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_DEBUG(Kernel_SVC,
              "called, address=0x{:016X}, size=0x{:X}, mask=0x{:08X}, attribute=0x{:08X}", address,
              size, mask, attribute);
@@ -210,7 +230,6 @@ static ResultCode SetMemoryAttribute32(Core::System& system, u32 address, u32 si

 /// Maps a memory range into a different range.
 static ResultCode MapMemory(Core::System& system, VAddr dst_addr, VAddr src_addr, u64 size) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr,
              src_addr, size);

@@ -230,7 +249,6 @@ static ResultCode MapMemory32(Core::System& system, u32 dst_addr, u32 src_addr,

 /// Unmaps a region that was previously mapped with svcMapMemory
 static ResultCode UnmapMemory(Core::System& system, VAddr dst_addr, VAddr src_addr, u64 size) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr,
              src_addr, size);

@@ -307,26 +325,29 @@ static ResultCode ConnectToNamedPort32(Core::System& system, Handle* out_handle,

 /// Makes a blocking IPC call to an OS service.
 static ResultCode SendSyncRequest(Core::System& system, Handle handle) {
-
    auto& kernel = system.Kernel();

+    // Create the wait queue.
+    KThreadQueue wait_queue(kernel);
+
+    // Get the client session from its handle.
+    KScopedAutoObject session =
+        kernel.CurrentProcess()->GetHandleTable().GetObject<KClientSession>(handle);
+    R_UNLESS(session.IsNotNull(), ResultInvalidHandle);
+
+    LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName());
+
    auto thread = kernel.CurrentScheduler()->GetCurrentThread();
    {
        KScopedSchedulerLock lock(kernel);
-        thread->SetState(ThreadState::Waiting);
-        thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);

-        {
-            KScopedAutoObject session =
-                kernel.CurrentProcess()->GetHandleTable().GetObject<KClientSession>(handle);
-            R_UNLESS(session.IsNotNull(), ResultInvalidHandle);
-            LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName());
-            session->SendSyncRequest(thread, system.Memory(), system.CoreTiming());
-        }
+        // This is a synchronous request, so we should wait for our request to complete.
+        GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue));
+        GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);
+        session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), system.CoreTiming());
    }

-    KSynchronizationObject* dummy{};
-    return thread->GetWaitResult(std::addressof(dummy));
+    return thread->GetWaitResult();
 }

 static ResultCode SendSyncRequest32(Core::System& system, Handle handle) {
@@ -637,7 +658,6 @@ static void OutputDebugString(Core::System& system, VAddr address, u64 len) {
 /// Gets system/memory information for the current process
 static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle handle,
                          u64 info_sub_id) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_TRACE(Kernel_SVC, "called info_id=0x{:X}, info_sub_id=0x{:X}, handle=0x{:08X}", info_id,
              info_sub_id, handle);

@@ -873,7 +893,7 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle
            const u64 thread_ticks = current_thread->GetCpuTime();

            out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks);
-        } else if (same_thread && info_sub_id == system.CurrentCoreIndex()) {
+        } else if (same_thread && info_sub_id == system.Kernel().CurrentPhysicalCoreIndex()) {
            out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks;
        }

@@ -881,21 +901,17 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle
        return ResultSuccess;
    }
    case GetInfoType::IdleTickCount: {
-        if (handle == 0) {
-            LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}",
-                      static_cast<Handle>(handle));
-            return ResultInvalidHandle;
-        }
+        // Verify the input handle is invalid.
+        R_UNLESS(handle == InvalidHandle, ResultInvalidHandle);

-        if (info_sub_id != 0xFFFFFFFFFFFFFFFF && info_sub_id != system.CurrentCoreIndex()) {
-            LOG_ERROR(Kernel_SVC, "Core is not the current core, got {}", info_sub_id);
-            return ResultInvalidCombination;
-        }
+        // Verify the requested core is valid.
+        const bool core_valid =
+            (info_sub_id == static_cast<u64>(-1ULL)) ||
+            (info_sub_id == static_cast<u64>(system.Kernel().CurrentPhysicalCoreIndex()));
+        R_UNLESS(core_valid, ResultInvalidCombination);

-        const auto& scheduler = *system.Kernel().CurrentScheduler();
-        const auto* const idle_thread = scheduler.GetIdleThread();
-
-        *result = idle_thread->GetCpuTime();
+        // Get the idle tick count.
+        *result = system.Kernel().CurrentScheduler()->GetIdleThread()->GetCpuTime();
        return ResultSuccess;
    }
    default:
@@ -918,7 +934,6 @@ static ResultCode GetInfo32(Core::System& system, u32* result_low, u32* result_h

 /// Maps memory at a desired address
 static ResultCode MapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);

    if (!Common::Is4KBAligned(addr)) {
@@ -972,7 +987,6 @@ static ResultCode MapPhysicalMemory32(Core::System& system, u32 addr, u32 size)

 /// Unmaps memory previously mapped via MapPhysicalMemory
 static ResultCode UnmapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);

    if (!Common::Is4KBAligned(addr)) {
@@ -1197,6 +1211,22 @@ constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) {
    }
 }

+constexpr bool IsValidMapCodeMemoryPermission(Svc::MemoryPermission perm) {
+    return perm == Svc::MemoryPermission::ReadWrite;
+}
+
+constexpr bool IsValidMapToOwnerCodeMemoryPermission(Svc::MemoryPermission perm) {
+    return perm == Svc::MemoryPermission::Read || perm == Svc::MemoryPermission::ReadExecute;
+}
+
+constexpr bool IsValidUnmapCodeMemoryPermission(Svc::MemoryPermission perm) {
+    return perm == Svc::MemoryPermission::None;
+}
+
+constexpr bool IsValidUnmapFromOwnerCodeMemoryPermission(Svc::MemoryPermission perm) {
+    return perm == Svc::MemoryPermission::None;
+}
+
 } // Anonymous namespace

 static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address,
@@ -1306,10 +1336,198 @@ static ResultCode SetProcessMemoryPermission(Core::System& system, Handle proces
    return page_table.SetProcessMemoryPermission(address, size, ConvertToKMemoryPermission(perm));
 }

+static ResultCode MapProcessMemory(Core::System& system, VAddr dst_address, Handle process_handle,
+                                   VAddr src_address, u64 size) {
+    LOG_TRACE(Kernel_SVC,
+              "called, dst_address=0x{:X}, process_handle=0x{:X}, src_address=0x{:X}, size=0x{:X}",
+              dst_address, process_handle, src_address, size);
+
+    // Validate the address/size.
+    R_UNLESS(Common::IsAligned(dst_address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(src_address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((dst_address < dst_address + size), ResultInvalidCurrentMemory);
+    R_UNLESS((src_address < src_address + size), ResultInvalidCurrentMemory);
+
+    // Get the processes.
+    KProcess* dst_process = system.CurrentProcess();
+    KScopedAutoObject src_process =
+        dst_process->GetHandleTable().GetObjectWithoutPseudoHandle<KProcess>(process_handle);
+    R_UNLESS(src_process.IsNotNull(), ResultInvalidHandle);
+
+    // Get the page tables.
+    auto& dst_pt = dst_process->PageTable();
+    auto& src_pt = src_process->PageTable();
+
+    // Validate that the mapping is in range.
+    R_UNLESS(src_pt.Contains(src_address, size), ResultInvalidCurrentMemory);
+    R_UNLESS(dst_pt.CanContain(dst_address, size, KMemoryState::SharedCode),
+             ResultInvalidMemoryRegion);
+
+    // Create a new page group.
+    KMemoryInfo kBlockInfo = dst_pt.QueryInfo(dst_address);
+    KPageLinkedList pg(kBlockInfo.GetAddress(), kBlockInfo.GetNumPages());
+
+    // Map the group.
+    R_TRY(dst_pt.MapPages(dst_address, pg, KMemoryState::SharedCode,
+                          KMemoryPermission::UserReadWrite));
+
+    return ResultSuccess;
+}
+
+static ResultCode UnmapProcessMemory(Core::System& system, VAddr dst_address, Handle process_handle,
+                                     VAddr src_address, u64 size) {
+    LOG_TRACE(Kernel_SVC,
+              "called, dst_address=0x{:X}, process_handle=0x{:X}, src_address=0x{:X}, size=0x{:X}",
+              dst_address, process_handle, src_address, size);
+
+    // Validate the address/size.
+    R_UNLESS(Common::IsAligned(dst_address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(src_address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((dst_address < dst_address + size), ResultInvalidCurrentMemory);
+    R_UNLESS((src_address < src_address + size), ResultInvalidCurrentMemory);
+
+    // Get the processes.
+    KProcess* dst_process = system.CurrentProcess();
+    KScopedAutoObject src_process =
+        dst_process->GetHandleTable().GetObjectWithoutPseudoHandle<KProcess>(process_handle);
+    R_UNLESS(src_process.IsNotNull(), ResultInvalidHandle);
+
+    // Get the page tables.
+    auto& dst_pt = dst_process->PageTable();
+    auto& src_pt = src_process->PageTable();
+
+    // Validate that the mapping is in range.
+    R_UNLESS(src_pt.Contains(src_address, size), ResultInvalidCurrentMemory);
+    R_UNLESS(dst_pt.CanContain(dst_address, size, KMemoryState::SharedCode),
+             ResultInvalidMemoryRegion);
+
+    // Unmap the memory.
+    R_TRY(dst_pt.UnmapProcessMemory(dst_address, size, src_pt, src_address));
+
+    return ResultSuccess;
+}
+
+static ResultCode CreateCodeMemory(Core::System& system, Handle* out, VAddr address, size_t size) {
+    LOG_TRACE(Kernel_SVC, "called, handle_out=0x{:X}, address=0x{:X}, size=0x{:X}",
+              static_cast<void*>(out), address, size);
+    // Get kernel instance.
+    auto& kernel = system.Kernel();
+
+    // Validate address / size.
+    R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
+
+    // Create the code memory.
+
+    KCodeMemory* code_mem = KCodeMemory::Create(kernel);
+    R_UNLESS(code_mem != nullptr, ResultOutOfResource);
+
+    // Verify that the region is in range.
+    R_UNLESS(system.CurrentProcess()->PageTable().Contains(address, size),
+             ResultInvalidCurrentMemory);
+
+    // Initialize the code memory.
+    R_TRY(code_mem->Initialize(system.DeviceMemory(), address, size));
+
+    // Register the code memory.
+    KCodeMemory::Register(kernel, code_mem);
+
+    // Add the code memory to the handle table.
+    R_TRY(system.CurrentProcess()->GetHandleTable().Add(out, code_mem));
+
+    code_mem->Close();
+
+    return ResultSuccess;
+}
+
+static ResultCode ControlCodeMemory(Core::System& system, Handle code_memory_handle, u32 operation,
+                                    VAddr address, size_t size, Svc::MemoryPermission perm) {
+
+    LOG_TRACE(Kernel_SVC,
+              "called, code_memory_handle=0x{:X}, operation=0x{:X}, address=0x{:X}, size=0x{:X}, "
+              "permission=0x{:X}",
+              code_memory_handle, operation, address, size, perm);
+
+    // Validate the address / size.
+    R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
+
+    // Get the code memory from its handle.
+    KScopedAutoObject code_mem =
+        system.CurrentProcess()->GetHandleTable().GetObject<KCodeMemory>(code_memory_handle);
+    R_UNLESS(code_mem.IsNotNull(), ResultInvalidHandle);
+
+    // NOTE: Here, Atmosphere extends the SVC to allow code memory operations on one's own process.
+    // This enables homebrew usage of these SVCs for JIT.
+
+    // Perform the operation.
+    switch (static_cast<CodeMemoryOperation>(operation)) {
+    case CodeMemoryOperation::Map: {
+        // Check that the region is in range.
+        R_UNLESS(
+            system.CurrentProcess()->PageTable().CanContain(address, size, KMemoryState::CodeOut),
+            ResultInvalidMemoryRegion);
+
+        // Check the memory permission.
+        R_UNLESS(IsValidMapCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+        // Map the memory.
+        R_TRY(code_mem->Map(address, size));
+    } break;
+    case CodeMemoryOperation::Unmap: {
+        // Check that the region is in range.
+        R_UNLESS(
+            system.CurrentProcess()->PageTable().CanContain(address, size, KMemoryState::CodeOut),
+            ResultInvalidMemoryRegion);
+
+        // Check the memory permission.
+        R_UNLESS(IsValidUnmapCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+        // Unmap the memory.
+        R_TRY(code_mem->Unmap(address, size));
+    } break;
+    case CodeMemoryOperation::MapToOwner: {
+        // Check that the region is in range.
+        R_UNLESS(code_mem->GetOwner()->PageTable().CanContain(address, size,
+                                                              KMemoryState::GeneratedCode),
+                 ResultInvalidMemoryRegion);
+
+        // Check the memory permission.
+        R_UNLESS(IsValidMapToOwnerCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+        // Map the memory to its owner.
+        R_TRY(code_mem->MapToOwner(address, size, perm));
+    } break;
+    case CodeMemoryOperation::UnmapFromOwner: {
+        // Check that the region is in range.
+        R_UNLESS(code_mem->GetOwner()->PageTable().CanContain(address, size,
+                                                              KMemoryState::GeneratedCode),
+                 ResultInvalidMemoryRegion);
+
+        // Check the memory permission.
+        R_UNLESS(IsValidUnmapFromOwnerCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+        // Unmap the memory from its owner.
+        R_TRY(code_mem->UnmapFromOwner(address, size));
+    } break;
+    default:
+        return ResultInvalidEnumValue;
+    }
+
+    return ResultSuccess;
+}
+
 static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address,
                                     VAddr page_info_address, Handle process_handle,
                                     VAddr address) {
-    std::lock_guard lock{HLE::g_hle_lock};
    LOG_TRACE(Kernel_SVC, "called process=0x{:08X} address={:X}", process_handle, address);
    const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
    KScopedAutoObject process = handle_table.GetObject<KProcess>(process_handle);
@@ -2527,7 +2745,7 @@ static const FunctionDef SVC_Table_32[] = {
 static const FunctionDef SVC_Table_64[] = {
    {0x00, nullptr, "Unknown"},
    {0x01, SvcWrap64<SetHeapSize>, "SetHeapSize"},
-    {0x02, nullptr, "SetMemoryPermission"},
+    {0x02, SvcWrap64<SetMemoryPermission>, "SetMemoryPermission"},
    {0x03, SvcWrap64<SetMemoryAttribute>, "SetMemoryAttribute"},
    {0x04, SvcWrap64<MapMemory>, "MapMemory"},
    {0x05, SvcWrap64<UnmapMemory>, "UnmapMemory"},
@@ -2600,8 +2818,8 @@ static const FunctionDef SVC_Table_64[] = {
    {0x48, nullptr, "MapPhysicalMemoryUnsafe"},
    {0x49, nullptr, "UnmapPhysicalMemoryUnsafe"},
    {0x4A, nullptr, "SetUnsafeLimit"},
-    {0x4B, nullptr, "CreateCodeMemory"},
-    {0x4C, nullptr, "ControlCodeMemory"},
+    {0x4B, SvcWrap64<CreateCodeMemory>, "CreateCodeMemory"},
+    {0x4C, SvcWrap64<ControlCodeMemory>, "ControlCodeMemory"},
    {0x4D, nullptr, "SleepSystem"},
    {0x4E, nullptr, "ReadWriteRegister"},
    {0x4F, nullptr, "SetProcessActivity"},
@@ -2641,8 +2859,8 @@ static const FunctionDef SVC_Table_64[] = {
    {0x71, nullptr, "ManageNamedPort"},
    {0x72, nullptr, "ConnectToPort"},
    {0x73, SvcWrap64<SetProcessMemoryPermission>, "SetProcessMemoryPermission"},
-    {0x74, nullptr, "MapProcessMemory"},
-    {0x75, nullptr, "UnmapProcessMemory"},
+    {0x74, SvcWrap64<MapProcessMemory>, "MapProcessMemory"},
+    {0x75, SvcWrap64<UnmapProcessMemory>, "UnmapProcessMemory"},
    {0x76, SvcWrap64<QueryProcessMemory>, "QueryProcessMemory"},
    {0x77, SvcWrap64<MapProcessCodeMemory>, "MapProcessCodeMemory"},
    {0x78, SvcWrap64<UnmapProcessCodeMemory>, "UnmapProcessCodeMemory"},
--- a/src/core/hle/kernel/svc_common.h
+++ b/src/core/hle/kernel/svc_common.h
@@ -5,6 +5,7 @@
 #pragma once

 #include "common/common_types.h"
+#include "common/literals.h"

 namespace Kernel {
 using Handle = u32;
@@ -12,9 +13,13 @@ using Handle = u32;

 namespace Kernel::Svc {

+using namespace Common::Literals;
+
 constexpr s32 ArgumentHandleCountMax = 0x40;
 constexpr u32 HandleWaitMask{1u << 30};

+constexpr inline std::size_t HeapSizeAlignment = 2_MiB;
+
 constexpr inline Handle InvalidHandle = Handle(0);

 enum PseudoHandle : Handle {
--- a/src/core/hle/kernel/svc_wrap.h
+++ b/src/core/hle/kernel/svc_wrap.h
@@ -73,6 +73,23 @@ void SvcWrap64(Core::System& system) {
                           .raw);
 }

+// Used by MapProcessMemory and UnmapProcessMemory
+template <ResultCode func(Core::System&, u64, u32, u64, u64)>
+void SvcWrap64(Core::System& system) {
+    FuncReturn(system, func(system, Param(system, 0), static_cast<u32>(Param(system, 1)),
+                            Param(system, 2), Param(system, 3))
+                           .raw);
+}
+
+// Used by ControlCodeMemory
+template <ResultCode func(Core::System&, Handle, u32, u64, u64, Svc::MemoryPermission)>
+void SvcWrap64(Core::System& system) {
+    FuncReturn(system, func(system, static_cast<Handle>(Param(system, 0)),
+                            static_cast<u32>(Param(system, 1)), Param(system, 2), Param(system, 3),
+                            static_cast<Svc::MemoryPermission>(Param(system, 4)))
+                           .raw);
+}
+
 template <ResultCode func(Core::System&, u32*)>
 void SvcWrap64(Core::System& system) {
    u32 param = 0;
@@ -232,6 +249,14 @@ void SvcWrap64(Core::System& system) {
        func(system, Param(system, 0), Param(system, 1), static_cast<u32>(Param(system, 2))).raw);
 }

+// Used by SetMemoryPermission
+template <ResultCode func(Core::System&, u64, u64, Svc::MemoryPermission)>
+void SvcWrap64(Core::System& system) {
+    FuncReturn(system, func(system, Param(system, 0), Param(system, 1),
+                            static_cast<Svc::MemoryPermission>(Param(system, 2)))
+                           .raw);
+}
+
 // Used by MapSharedMemory
 template <ResultCode func(Core::System&, Handle, u64, u64, Svc::MemoryPermission)>
 void SvcWrap64(Core::System& system) {
@@ -301,6 +326,16 @@ void SvcWrap64(Core::System& system) {
    FuncReturn(system, retval);
 }

+// Used by CreateCodeMemory
+template <ResultCode func(Core::System&, Handle*, u64, u64)>
+void SvcWrap64(Core::System& system) {
+    u32 param_1 = 0;
+    const u32 retval = func(system, &param_1, Param(system, 1), Param(system, 2)).raw;
+
+    system.CurrentArmInterface().SetReg(1, param_1);
+    FuncReturn(system, retval);
+}
+
 template <ResultCode func(Core::System&, Handle*, u64, u32, u32)>
 void SvcWrap64(Core::System& system) {
    u32 param_1 = 0;
--- a/src/core/hle/kernel/time_manager.cpp
+++ b/src/core/hle/kernel/time_manager.cpp
@@ -5,6 +5,7 @@
 #include "common/assert.h"
 #include "core/core.h"
 #include "core/core_timing.h"
+#include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/time_manager.h"

@@ -15,7 +16,10 @@ TimeManager::TimeManager(Core::System& system_) : system{system_} {
        Core::Timing::CreateEvent("Kernel::TimeManagerCallback",
                                  [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
                                      KThread* thread = reinterpret_cast<KThread*>(thread_handle);
-                                      thread->Wakeup();
+                                      {
+                                          KScopedSchedulerLock sl(system.Kernel());
+                                          thread->OnTimer();
+                                      }
                                  });
 }

--- a/src/core/hle/lock.cpp
+++ b/src/core/hle/lock.cpp
@@ -1,9 +0,0 @@
-// Copyright 2017 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <core/hle/lock.h>
-
-namespace HLE {
-std::recursive_mutex g_hle_lock;
-}
--- a/src/core/hle/lock.h
+++ b/src/core/hle/lock.h
@@ -1,18 +0,0 @@
-// Copyright 2017 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <mutex>
-
-namespace HLE {
-/*
- * Synchronizes access to the internal HLE kernel structures, it is acquired when a guest
- * application thread performs a syscall. It should be acquired by any host threads that read or
- * modify the HLE kernel state. Note: Any operation that directly or indirectly reads from or writes
- * to the emulated memory is not protected by this mutex, and should be avoided in any threads other
- * than the CPU thread.
- */
-extern std::recursive_mutex g_hle_lock;
-} // namespace HLE
--- a/src/core/hle/service/bcat/backend/backend.cpp
+++ b/src/core/hle/service/bcat/backend/backend.cpp
@@ -6,7 +6,6 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/hle/kernel/k_event.h"
-#include "core/hle/lock.h"
 #include "core/hle/service/bcat/backend/backend.h"

 namespace Service::BCAT {
@@ -29,10 +28,6 @@ DeliveryCacheProgressImpl& ProgressServiceBackend::GetImpl() {
    return impl;
 }

-void ProgressServiceBackend::SetNeedHLELock(bool need) {
-    need_hle_lock = need;
-}
-
 void ProgressServiceBackend::SetTotalSize(u64 size) {
    impl.total_bytes = size;
    SignalUpdate();
@@ -88,12 +83,7 @@ void ProgressServiceBackend::FinishDownload(ResultCode result) {
 }

 void ProgressServiceBackend::SignalUpdate() {
-    if (need_hle_lock) {
-        std::lock_guard lock(HLE::g_hle_lock);
-        update_event->GetWritableEvent().Signal();
-    } else {
-        update_event->GetWritableEvent().Signal();
-    }
+    update_event->GetWritableEvent().Signal();
 }

 Backend::Backend(DirectoryGetter getter) : dir_getter(std::move(getter)) {}
--- a/src/core/hle/service/bcat/backend/backend.h
+++ b/src/core/hle/service/bcat/backend/backend.h
@@ -71,10 +71,6 @@ class ProgressServiceBackend {
 public:
    ~ProgressServiceBackend();

-    // Clients should call this with true if any of the functions are going to be called from a
-    // non-HLE thread and this class need to lock the hle mutex. (default is false)
-    void SetNeedHLELock(bool need);
-
    // Sets the number of bytes total in the entire download.
    void SetTotalSize(u64 size);

@@ -109,7 +105,6 @@ private:

    DeliveryCacheProgressImpl impl{};
    Kernel::KEvent* update_event;
-    bool need_hle_lock = false;
 };

 // A class representing an abstract backend for BCAT functionality.
--- a/src/core/hle/service/glue/glue.cpp
+++ b/src/core/hle/service/glue/glue.cpp
@@ -8,6 +8,7 @@
 #include "core/hle/service/glue/bgtc.h"
 #include "core/hle/service/glue/ectx.h"
 #include "core/hle/service/glue/glue.h"
+#include "core/hle/service/glue/notif.h"

 namespace Service::Glue {

@@ -24,6 +25,9 @@ void InstallInterfaces(Core::System& system) {

    // Error Context
    std::make_shared<ECTX_AW>(system)->InstallAsService(system.ServiceManager());
+
+    // Notification Services for application
+    std::make_shared<NOTIF_A>(system)->InstallAsService(system.ServiceManager());
 }

 } // namespace Service::Glue
--- a/src/core/hle/service/glue/notif.cpp
+++ b/src/core/hle/service/glue/notif.cpp
@@ -0,0 +1,44 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/glue/notif.h"
+
+namespace Service::Glue {
+
+NOTIF_A::NOTIF_A(Core::System& system_) : ServiceFramework{system_, "notif:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {500, nullptr, "RegisterAlarmSetting"},
+        {510, nullptr, "UpdateAlarmSetting"},
+        {520, &NOTIF_A::ListAlarmSettings, "ListAlarmSettings"},
+        {530, nullptr, "LoadApplicationParameter"},
+        {540, nullptr, "DeleteAlarmSetting"},
+        {1000, &NOTIF_A::Initialize, "Initialize"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+NOTIF_A::~NOTIF_A() = default;
+
+void NOTIF_A::ListAlarmSettings(Kernel::HLERequestContext& ctx) {
+    // Returns an array of AlarmSetting
+    constexpr s32 alarm_count = 0;
+
+    LOG_WARNING(Service_NOTIF, "(STUBBED) called");
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(ResultSuccess);
+    rb.Push(alarm_count);
+}
+
+void NOTIF_A::Initialize(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_NOTIF, "(STUBBED) called");
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+}
+
+} // namespace Service::Glue
--- a/src/core/hle/service/glue/notif.h
+++ b/src/core/hle/service/glue/notif.h
@@ -0,0 +1,25 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Glue {
+
+class NOTIF_A final : public ServiceFramework<NOTIF_A> {
+public:
+    explicit NOTIF_A(Core::System& system_);
+    ~NOTIF_A() override;
+
+private:
+    void ListAlarmSettings(Kernel::HLERequestContext& ctx);
+    void Initialize(Kernel::HLERequestContext& ctx);
+};
+
+} // namespace Service::Glue
--- a/src/core/hle/service/hid/controllers/npad.cpp
+++ b/src/core/hle/service/hid/controllers/npad.cpp
@@ -66,9 +66,9 @@ Controller_NPad::Controller_NPad(Core::HID::HIDCore& hid_core_,
        auto& controller = controller_data[i];
        controller.device = hid_core.GetEmulatedControllerByIndex(i);
        controller.vibration[Core::HID::EmulatedDeviceIndex::LeftIndex].latest_vibration_value =
-            DEFAULT_VIBRATION_VALUE;
+            Core::HID::DEFAULT_VIBRATION_VALUE;
        controller.vibration[Core::HID::EmulatedDeviceIndex::RightIndex].latest_vibration_value =
-            DEFAULT_VIBRATION_VALUE;
+            Core::HID::DEFAULT_VIBRATION_VALUE;
        Core::HID::ControllerUpdateCallback engine_callback{
            .on_change = [this,
                          i](Core::HID::ControllerTriggerType type) { ControllerUpdate(type, i); },
@@ -110,7 +110,7 @@ void Controller_NPad::ControllerUpdate(Core::HID::ControllerTriggerType type,
        UpdateControllerAt(npad_type, npad_id, is_connected);
        break;
    case Core::HID::ControllerTriggerType::Battery: {
-        if (!controller.is_connected) {
+        if (!controller.device->IsConnected()) {
            return;
        }
        auto& shared_memory = controller.shared_memory_entry;
@@ -150,7 +150,6 @@ void Controller_NPad::InitNewlyAddedController(Core::HID::NpadIdType npad_id) {
        shared_memory.system_properties.is_vertical.Assign(1);
        shared_memory.system_properties.use_plus.Assign(1);
        shared_memory.system_properties.use_minus.Assign(1);
-        shared_memory.assignment_mode = NpadJoyAssignmentMode::Single;
        shared_memory.applet_footer.type = AppletFooterUiType::SwitchProController;
        break;
    case Core::HID::NpadStyleIndex::Handheld:
@@ -166,21 +165,30 @@ void Controller_NPad::InitNewlyAddedController(Core::HID::NpadIdType npad_id) {
        break;
    case Core::HID::NpadStyleIndex::JoyconDual:
        shared_memory.style_tag.joycon_dual.Assign(1);
-        shared_memory.device_type.joycon_left.Assign(1);
-        shared_memory.device_type.joycon_right.Assign(1);
-        shared_memory.system_properties.is_vertical.Assign(1);
-        shared_memory.system_properties.use_plus.Assign(1);
-        shared_memory.system_properties.use_minus.Assign(1);
+        if (controller.is_dual_left_connected) {
+            shared_memory.device_type.joycon_left.Assign(1);
+            shared_memory.system_properties.use_minus.Assign(1);
+        }
+        if (controller.is_dual_right_connected) {
+            shared_memory.device_type.joycon_right.Assign(1);
+            shared_memory.system_properties.use_plus.Assign(1);
+        }
        shared_memory.system_properties.use_directional_buttons.Assign(1);
+        shared_memory.system_properties.is_vertical.Assign(1);
        shared_memory.assignment_mode = NpadJoyAssignmentMode::Dual;
-        shared_memory.applet_footer.type = AppletFooterUiType::JoyDual;
+        if (controller.is_dual_left_connected && controller.is_dual_right_connected) {
+            shared_memory.applet_footer.type = AppletFooterUiType::JoyDual;
+        } else if (controller.is_dual_left_connected) {
+            shared_memory.applet_footer.type = AppletFooterUiType::JoyDualLeftOnly;
+        } else {
+            shared_memory.applet_footer.type = AppletFooterUiType::JoyDualRightOnly;
+        }
        break;
    case Core::HID::NpadStyleIndex::JoyconLeft:
        shared_memory.style_tag.joycon_left.Assign(1);
        shared_memory.device_type.joycon_left.Assign(1);
        shared_memory.system_properties.is_horizontal.Assign(1);
        shared_memory.system_properties.use_minus.Assign(1);
-        shared_memory.assignment_mode = NpadJoyAssignmentMode::Single;
        shared_memory.applet_footer.type = AppletFooterUiType::JoyLeftHorizontal;
        break;
    case Core::HID::NpadStyleIndex::JoyconRight:
@@ -188,7 +196,6 @@ void Controller_NPad::InitNewlyAddedController(Core::HID::NpadIdType npad_id) {
        shared_memory.device_type.joycon_right.Assign(1);
        shared_memory.system_properties.is_horizontal.Assign(1);
        shared_memory.system_properties.use_plus.Assign(1);
-        shared_memory.assignment_mode = NpadJoyAssignmentMode::Single;
        shared_memory.applet_footer.type = AppletFooterUiType::JoyRightHorizontal;
        break;
    case Core::HID::NpadStyleIndex::GameCube:
@@ -200,7 +207,6 @@ void Controller_NPad::InitNewlyAddedController(Core::HID::NpadIdType npad_id) {
    case Core::HID::NpadStyleIndex::Pokeball:
        shared_memory.style_tag.palma.Assign(1);
        shared_memory.device_type.palma.Assign(1);
-        shared_memory.assignment_mode = NpadJoyAssignmentMode::Single;
        break;
    case Core::HID::NpadStyleIndex::NES:
        shared_memory.style_tag.lark.Assign(1);
@@ -443,11 +449,15 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
        case Core::HID::NpadStyleIndex::JoyconDual:
            pad_state.connection_status.raw = 0;
            pad_state.connection_status.is_connected.Assign(1);
-            pad_state.connection_status.is_left_connected.Assign(1);
-            pad_state.connection_status.is_right_connected.Assign(1);
+            if (controller.is_dual_left_connected) {
+                pad_state.connection_status.is_left_connected.Assign(1);
+                libnx_state.connection_status.is_left_connected.Assign(1);
+            }
+            if (controller.is_dual_right_connected) {
+                pad_state.connection_status.is_right_connected.Assign(1);
+                libnx_state.connection_status.is_right_connected.Assign(1);
+            }

-            libnx_state.connection_status.is_left_connected.Assign(1);
-            libnx_state.connection_status.is_right_connected.Assign(1);
            pad_state.sampling_number =
                npad.joy_dual_lifo.ReadCurrentEntry().state.sampling_number + 1;
            npad.joy_dual_lifo.WriteNextEntry(pad_state);
@@ -687,7 +697,7 @@ Controller_NPad::NpadCommunicationMode Controller_NPad::GetNpadCommunicationMode
    return communication_mode;
 }

-void Controller_NPad::SetNpadMode(Core::HID::NpadIdType npad_id,
+void Controller_NPad::SetNpadMode(Core::HID::NpadIdType npad_id, NpadJoyDeviceType npad_device_type,
                                  NpadJoyAssignmentMode assignment_mode) {
    if (!IsNpadIdValid(npad_id)) {
        LOG_ERROR(Service_HID, "Invalid NpadIdType npad_id:{}", npad_id);
@@ -698,6 +708,62 @@ void Controller_NPad::SetNpadMode(Core::HID::NpadIdType npad_id,
    if (controller.shared_memory_entry.assignment_mode != assignment_mode) {
        controller.shared_memory_entry.assignment_mode = assignment_mode;
    }
+
+    if (!controller.device->IsConnected()) {
+        return;
+    }
+
+    if (assignment_mode == NpadJoyAssignmentMode::Dual) {
+        if (controller.device->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconLeft) {
+            DisconnectNpad(npad_id);
+            controller.is_dual_left_connected = true;
+            controller.is_dual_right_connected = false;
+            UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconDual, npad_id, true);
+            return;
+        }
+        if (controller.device->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconRight) {
+            DisconnectNpad(npad_id);
+            controller.is_dual_left_connected = false;
+            controller.is_dual_right_connected = true;
+            UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconDual, npad_id, true);
+            return;
+        }
+        return;
+    }
+
+    // This is for NpadJoyAssignmentMode::Single
+
+    // Only JoyconDual get affected by this function
+    if (controller.device->GetNpadStyleIndex() != Core::HID::NpadStyleIndex::JoyconDual) {
+        return;
+    }
+
+    if (controller.is_dual_left_connected && !controller.is_dual_right_connected) {
+        DisconnectNpad(npad_id);
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconLeft, npad_id, true);
+        return;
+    }
+    if (!controller.is_dual_left_connected && controller.is_dual_right_connected) {
+        DisconnectNpad(npad_id);
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconRight, npad_id, true);
+        return;
+    }
+
+    // We have two controllers connected to the same npad_id we need to split them
+    const auto npad_id_2 = hid_core.GetFirstDisconnectedNpadId();
+    auto& controller_2 = GetControllerFromNpadIdType(npad_id_2);
+    DisconnectNpad(npad_id);
+    if (npad_device_type == NpadJoyDeviceType::Left) {
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconLeft, npad_id, true);
+        controller_2.is_dual_left_connected = false;
+        controller_2.is_dual_right_connected = true;
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconDual, npad_id_2, true);
+    } else {
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconRight, npad_id, true);
+        controller_2.is_dual_left_connected = true;
+        controller_2.is_dual_right_connected = false;
+        UpdateControllerAt(Core::HID::NpadStyleIndex::JoyconDual, npad_id_2, true);
+    }
 }

 bool Controller_NPad::VibrateControllerAtIndex(Core::HID::NpadIdType npad_id,
@@ -715,7 +781,8 @@ bool Controller_NPad::VibrateControllerAtIndex(Core::HID::NpadIdType npad_id,
            Core::HID::VibrationValue vibration{0.0f, 160.0f, 0.0f, 320.0f};
            controller.device->SetVibration(device_index, vibration);
            // Then reset the vibration value to its default value.
-            controller.vibration[device_index].latest_vibration_value = DEFAULT_VIBRATION_VALUE;
+            controller.vibration[device_index].latest_vibration_value =
+                Core::HID::DEFAULT_VIBRATION_VALUE;
        }

        return false;
@@ -907,6 +974,7 @@ void Controller_NPad::DisconnectNpad(Core::HID::NpadIdType npad_id) {
    }

    auto& shared_memory_entry = controller.shared_memory_entry;
+    // Don't reset shared_memory_entry.assignment_mode this value is persistent
    shared_memory_entry.style_tag.raw = Core::HID::NpadStyleSet::None; // Zero out
    shared_memory_entry.device_type.raw = 0;
    shared_memory_entry.system_properties.raw = 0;
@@ -923,9 +991,10 @@ void Controller_NPad::DisconnectNpad(Core::HID::NpadIdType npad_id) {
        .left = {},
        .right = {},
    };
-    shared_memory_entry.assignment_mode = NpadJoyAssignmentMode::Dual;
    shared_memory_entry.applet_footer.type = AppletFooterUiType::None;

+    controller.is_dual_left_connected = true;
+    controller.is_dual_right_connected = true;
    controller.is_connected = false;
    controller.device->Disconnect();
    SignalStyleSetChangedEvent(npad_id);
@@ -1022,19 +1091,70 @@ void Controller_NPad::MergeSingleJoyAsDualJoy(Core::HID::NpadIdType npad_id_1,
                  npad_id_2);
        return;
    }
-    auto& controller_1 = GetControllerFromNpadIdType(npad_id_1).device;
-    auto& controller_2 = GetControllerFromNpadIdType(npad_id_2).device;
+    auto& controller_1 = GetControllerFromNpadIdType(npad_id_1);
+    auto& controller_2 = GetControllerFromNpadIdType(npad_id_2);
+    const auto controller_style_1 = controller_1.device->GetNpadStyleIndex();
+    const auto controller_style_2 = controller_2.device->GetNpadStyleIndex();
+    bool merge_controllers = false;

    // If the controllers at both npad indices form a pair of left and right joycons, merge them.
    // Otherwise, do nothing.
-    if ((controller_1->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconLeft &&
-         controller_2->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconRight) ||
-        (controller_2->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconLeft &&
-         controller_1->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::JoyconRight)) {
+    if (controller_style_1 == Core::HID::NpadStyleIndex::JoyconLeft &&
+        controller_style_2 == Core::HID::NpadStyleIndex::JoyconRight) {
+        merge_controllers = true;
+    }
+    if (controller_style_2 == Core::HID::NpadStyleIndex::JoyconLeft &&
+        controller_style_1 == Core::HID::NpadStyleIndex::JoyconRight) {
+        merge_controllers = true;
+    }
+    if (controller_style_1 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_2 == Core::HID::NpadStyleIndex::JoyconRight &&
+        controller_1.is_dual_left_connected && !controller_1.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+    if (controller_style_1 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_2 == Core::HID::NpadStyleIndex::JoyconLeft &&
+        !controller_1.is_dual_left_connected && controller_1.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+    if (controller_style_2 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_1 == Core::HID::NpadStyleIndex::JoyconRight &&
+        controller_2.is_dual_left_connected && !controller_2.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+    if (controller_style_2 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_1 == Core::HID::NpadStyleIndex::JoyconLeft &&
+        !controller_2.is_dual_left_connected && controller_2.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+    if (controller_style_1 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_2 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_1.is_dual_left_connected && !controller_1.is_dual_right_connected &&
+        !controller_2.is_dual_left_connected && controller_2.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+    if (controller_style_1 == Core::HID::NpadStyleIndex::JoyconDual &&
+        controller_style_2 == Core::HID::NpadStyleIndex::JoyconDual &&
+        !controller_1.is_dual_left_connected && controller_1.is_dual_right_connected &&
+        controller_2.is_dual_left_connected && !controller_2.is_dual_right_connected) {
+        merge_controllers = true;
+    }
+
+    if (merge_controllers) {
        // Disconnect the joycon at the second id and connect the dual joycon at the first index.
        DisconnectNpad(npad_id_2);
+        controller_1.is_dual_left_connected = true;
+        controller_1.is_dual_right_connected = true;
        AddNewControllerAt(Core::HID::NpadStyleIndex::JoyconDual, npad_id_1);
+        return;
    }
+    LOG_WARNING(Service_HID,
+                "Controllers can't be merged npad_id_1:{}, npad_id_2:{}, type_1:{}, type_2:{}, "
+                "dual_1(left/right):{}/{}, dual_2(left/right):{}/{}",
+                npad_id_1, npad_id_2, controller_1.device->GetNpadStyleIndex(),
+                controller_2.device->GetNpadStyleIndex(), controller_1.is_dual_left_connected,
+                controller_1.is_dual_right_connected, controller_2.is_dual_left_connected,
+                controller_2.is_dual_right_connected);
 }

 void Controller_NPad::StartLRAssignmentMode() {
--- a/src/core/hle/service/hid/controllers/npad.h
+++ b/src/core/hle/service/hid/controllers/npad.h
@@ -90,13 +90,6 @@ public:
        Default = 3,
    };

-    static constexpr Core::HID::VibrationValue DEFAULT_VIBRATION_VALUE{
-        .low_amplitude = 0.0f,
-        .low_frequency = 160.0f,
-        .high_amplitude = 0.0f,
-        .high_frequency = 320.0f,
-    };
-
    void SetSupportedStyleSet(Core::HID::NpadStyleTag style_set);
    Core::HID::NpadStyleTag GetSupportedStyleSet() const;

@@ -113,7 +106,8 @@ public:
    void SetNpadCommunicationMode(NpadCommunicationMode communication_mode_);
    NpadCommunicationMode GetNpadCommunicationMode() const;

-    void SetNpadMode(Core::HID::NpadIdType npad_id, NpadJoyAssignmentMode assignment_mode);
+    void SetNpadMode(Core::HID::NpadIdType npad_id, NpadJoyDeviceType npad_device_type,
+                     NpadJoyAssignmentMode assignment_mode);

    bool VibrateControllerAtIndex(Core::HID::NpadIdType npad_id, std::size_t device_index,
                                  const Core::HID::VibrationValue& vibration_value);
@@ -464,7 +458,10 @@ private:
        std::array<VibrationData, 2> vibration{};
        bool unintended_home_button_input_protection{};
        bool is_connected{};
-        Core::HID::NpadStyleIndex npad_type{Core::HID::NpadStyleIndex::None};
+
+        // Dual joycons can have only one side connected
+        bool is_dual_left_connected{true};
+        bool is_dual_right_connected{true};

        // Motion parameters
        bool sixaxis_at_rest{true};
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -975,35 +975,35 @@ void Hid::SetNpadJoyAssignmentModeSingleByDefault(Kernel::HLERequestContext& ctx
    const auto parameters{rp.PopRaw<Parameters>()};

    applet_resource->GetController<Controller_NPad>(HidController::NPad)
-        .SetNpadMode(parameters.npad_id, Controller_NPad::NpadJoyAssignmentMode::Single);
+        .SetNpadMode(parameters.npad_id, Controller_NPad::NpadJoyDeviceType::Left,
+                     Controller_NPad::NpadJoyAssignmentMode::Single);

-    LOG_WARNING(Service_HID, "(STUBBED) called, npad_id={}, applet_resource_user_id={}",
-                parameters.npad_id, parameters.applet_resource_user_id);
+    LOG_INFO(Service_HID, "called, npad_id={}, applet_resource_user_id={}", parameters.npad_id,
+             parameters.applet_resource_user_id);

    IPC::ResponseBuilder rb{ctx, 2};
    rb.Push(ResultSuccess);
 }

 void Hid::SetNpadJoyAssignmentModeSingle(Kernel::HLERequestContext& ctx) {
-    // TODO: Check the differences between this and SetNpadJoyAssignmentModeSingleByDefault
    IPC::RequestParser rp{ctx};
    struct Parameters {
        Core::HID::NpadIdType npad_id;
        INSERT_PADDING_WORDS_NOINIT(1);
        u64 applet_resource_user_id;
-        u64 npad_joy_device_type;
+        Controller_NPad::NpadJoyDeviceType npad_joy_device_type;
    };
    static_assert(sizeof(Parameters) == 0x18, "Parameters has incorrect size.");

    const auto parameters{rp.PopRaw<Parameters>()};

    applet_resource->GetController<Controller_NPad>(HidController::NPad)
-        .SetNpadMode(parameters.npad_id, Controller_NPad::NpadJoyAssignmentMode::Single);
+        .SetNpadMode(parameters.npad_id, parameters.npad_joy_device_type,
+                     Controller_NPad::NpadJoyAssignmentMode::Single);

-    LOG_WARNING(Service_HID,
-                "(STUBBED) called, npad_id={}, applet_resource_user_id={}, npad_joy_device_type={}",
-                parameters.npad_id, parameters.applet_resource_user_id,
-                parameters.npad_joy_device_type);
+    LOG_INFO(Service_HID, "called, npad_id={}, applet_resource_user_id={}, npad_joy_device_type={}",
+             parameters.npad_id, parameters.applet_resource_user_id,
+             parameters.npad_joy_device_type);

    IPC::ResponseBuilder rb{ctx, 2};
    rb.Push(ResultSuccess);
@@ -1021,10 +1021,10 @@ void Hid::SetNpadJoyAssignmentModeDual(Kernel::HLERequestContext& ctx) {
    const auto parameters{rp.PopRaw<Parameters>()};

    applet_resource->GetController<Controller_NPad>(HidController::NPad)
-        .SetNpadMode(parameters.npad_id, Controller_NPad::NpadJoyAssignmentMode::Dual);
+        .SetNpadMode(parameters.npad_id, {}, Controller_NPad::NpadJoyAssignmentMode::Dual);

-    LOG_WARNING(Service_HID, "(STUBBED) called, npad_id={}, applet_resource_user_id={}",
-                parameters.npad_id, parameters.applet_resource_user_id);
+    LOG_INFO(Service_HID, "called, npad_id={}, applet_resource_user_id={}", parameters.npad_id,
+             parameters.applet_resource_user_id);

    IPC::ResponseBuilder rb{ctx, 2};
    rb.Push(ResultSuccess);
@@ -1404,7 +1404,7 @@ void Hid::SendVibrationGcErmCommand(Kernel::HLERequestContext& ctx) {
                .high_frequency = 0.0f,
            };
        default:
-            return Controller_NPad::DEFAULT_VIBRATION_VALUE;
+            return Core::HID::DEFAULT_VIBRATION_VALUE;
        }
    }();

--- a/src/core/hle/service/nfp/nfp.cpp
+++ b/src/core/hle/service/nfp/nfp.cpp
@@ -9,7 +9,6 @@
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/k_event.h"
-#include "core/hle/lock.h"
 #include "core/hle/service/nfp/nfp.h"
 #include "core/hle/service/nfp/nfp_user.h"

@@ -337,7 +336,6 @@ void Module::Interface::CreateUserInterface(Kernel::HLERequestContext& ctx) {
 }

 bool Module::Interface::LoadAmiibo(const std::vector<u8>& buffer) {
-    std::lock_guard lock{HLE::g_hle_lock};
    if (buffer.size() < sizeof(AmiiboFile)) {
        return false;
    }
--- a/src/core/loader/kip.cpp
+++ b/src/core/loader/kip.cpp
@@ -71,7 +71,6 @@ AppLoader::LoadResult AppLoader_KIP::Load(Kernel::KProcess& process,
                        kip->GetTitleID(), 0xFFFFFFFFFFFFFFFF, 0x1FE00000,
                        kip->GetKernelCapabilities());

-    const VAddr base_address = process.PageTable().GetCodeRegionStart();
    Kernel::CodeSet codeset;
    Kernel::PhysicalMemory program_image;

@@ -91,7 +90,14 @@ AppLoader::LoadResult AppLoader_KIP::Load(Kernel::KProcess& process,
    program_image.resize(PageAlignSize(kip->GetBSSOffset()) + kip->GetBSSSize());
    codeset.DataSegment().size += kip->GetBSSSize();

+    // Setup the process code layout
+    if (process.LoadFromMetadata(FileSys::ProgramMetadata::GetDefault(), program_image.size())
+            .IsError()) {
+        return {ResultStatus::ErrorNotInitialized, {}};
+    }
+
    codeset.memory = std::move(program_image);
+    const VAddr base_address = process.PageTable().GetCodeRegionStart();
    process.LoadModule(std::move(codeset), base_address);

    LOG_DEBUG(Loader, "loaded module {} @ 0x{:X}", kip->GetName(), base_address);
--- a/src/input_common/drivers/gc_adapter.cpp
+++ b/src/input_common/drivers/gc_adapter.cpp
@@ -69,7 +69,7 @@ private:
    libusb_device_handle* handle{};
 };

-GCAdapter::GCAdapter(const std::string& input_engine_) : InputEngine(input_engine_) {
+GCAdapter::GCAdapter(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    if (usb_adapter_handle) {
        return;
    }
@@ -325,8 +325,8 @@ bool GCAdapter::GetGCEndpoint(libusb_device* device) {
    return true;
 }

-Common::Input::VibrationError GCAdapter::SetRumble(const PadIdentifier& identifier,
-                                                   const Common::Input::VibrationStatus vibration) {
+Common::Input::VibrationError GCAdapter::SetRumble(
+    const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) {
    const auto mean_amplitude = (vibration.low_amplitude + vibration.high_amplitude) * 0.5f;
    const auto processed_amplitude =
        static_cast<u8>((mean_amplitude + std::pow(mean_amplitude, 0.3f)) * 0.5f * 0x8);
--- a/src/input_common/drivers/gc_adapter.h
+++ b/src/input_common/drivers/gc_adapter.h
@@ -22,13 +22,13 @@ namespace InputCommon {
 class LibUSBContext;
 class LibUSBDeviceHandle;

-class GCAdapter : public InputCommon::InputEngine {
+class GCAdapter : public InputEngine {
 public:
-    explicit GCAdapter(const std::string& input_engine_);
-    ~GCAdapter();
+    explicit GCAdapter(std::string input_engine_);
+    ~GCAdapter() override;

    Common::Input::VibrationError SetRumble(
-        const PadIdentifier& identifier, const Common::Input::VibrationStatus vibration) override;
+        const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) override;

    /// Used for automapping features
    std::vector<Common::ParamPackage> GetInputDevices() const override;
--- a/src/input_common/drivers/keyboard.cpp
+++ b/src/input_common/drivers/keyboard.cpp
@@ -24,7 +24,7 @@ constexpr PadIdentifier keyboard_modifier_identifier = {
    .pad = 1,
 };

-Keyboard::Keyboard(const std::string& input_engine_) : InputEngine(input_engine_) {
+Keyboard::Keyboard(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    // Keyboard is broken into 3 diferent sets:
    // key: Unfiltered intended for controllers.
    // keyboard_key: Allows only Settings::NativeKeyboard::Keys intended for keyboard emulation.
--- a/src/input_common/drivers/keyboard.h
+++ b/src/input_common/drivers/keyboard.h
@@ -12,9 +12,9 @@ namespace InputCommon {
 * A button device factory representing a keyboard. It receives keyboard events and forward them
 * to all button devices it created.
 */
-class Keyboard final : public InputCommon::InputEngine {
+class Keyboard final : public InputEngine {
 public:
-    explicit Keyboard(const std::string& input_engine_);
+    explicit Keyboard(std::string input_engine_);

    /**
     * Sets the status of all buttons bound with the key to pressed
--- a/src/input_common/drivers/mouse.cpp
+++ b/src/input_common/drivers/mouse.cpp
@@ -24,7 +24,7 @@ constexpr PadIdentifier identifier = {
    .pad = 0,
 };

-Mouse::Mouse(const std::string& input_engine_) : InputEngine(input_engine_) {
+Mouse::Mouse(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    PreSetController(identifier);
    PreSetAxis(identifier, mouse_axis_x);
    PreSetAxis(identifier, mouse_axis_y);
--- a/src/input_common/drivers/mouse.h
+++ b/src/input_common/drivers/mouse.h
@@ -27,9 +27,9 @@ enum class MouseButton {
 * A button device factory representing a keyboard. It receives keyboard events and forward them
 * to all button devices it created.
 */
-class Mouse final : public InputCommon::InputEngine {
+class Mouse final : public InputEngine {
 public:
-    explicit Mouse(const std::string& input_engine_);
+    explicit Mouse(std::string input_engine_);

    /**
     * Signals that mouse has moved.
--- a/src/input_common/drivers/sdl_driver.cpp
+++ b/src/input_common/drivers/sdl_driver.cpp
@@ -88,7 +88,7 @@ public:
        return true;
    }

-    BasicMotion GetMotion() {
+    const BasicMotion& GetMotion() const {
        return motion;
    }

@@ -367,7 +367,7 @@ void SDLDriver::HandleGameControllerEvent(const SDL_Event& event) {
            if (joystick->UpdateMotion(event.csensor)) {
                const PadIdentifier identifier = joystick->GetPadIdentifier();
                SetMotion(identifier, 0, joystick->GetMotion());
-            };
+            }
        }
        break;
    }
@@ -387,7 +387,7 @@ void SDLDriver::CloseJoysticks() {
    joystick_map.clear();
 }

-SDLDriver::SDLDriver(const std::string& input_engine_) : InputEngine(input_engine_) {
+SDLDriver::SDLDriver(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    if (!Settings::values.enable_raw_input) {
        // Disable raw input. When enabled this setting causes SDL to die when a web applet opens
        SDL_SetHint(SDL_HINT_JOYSTICK_RAWINPUT, "0");
@@ -403,10 +403,11 @@ SDLDriver::SDLDriver(const std::string& input_engine_) : InputEngine(input_engin

    // Use hidapi driver for joycons. This will allow joycons to be detected as a GameController and
    // not a generic one
-    SDL_SetHint("SDL_JOYSTICK_HIDAPI_JOY_CONS", "1");
+    SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_JOY_CONS, "1");

-    // Turn off Pro controller home led
-    SDL_SetHint("SDL_JOYSTICK_HIDAPI_SWITCH_HOME_LED", "0");
+    // Disable hidapi driver for xbox. Already default on Windows, this causes conflict with native
+    // driver on Linux.
+    SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_XBOX, "0");

    // If the frontend is going to manage the event loop, then we don't start one here
    start_thread = SDL_WasInit(SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER) == 0;
@@ -491,8 +492,9 @@ std::vector<Common::ParamPackage> SDLDriver::GetInputDevices() const {
    }
    return devices;
 }
-Common::Input::VibrationError SDLDriver::SetRumble(const PadIdentifier& identifier,
-                                                   const Common::Input::VibrationStatus vibration) {
+
+Common::Input::VibrationError SDLDriver::SetRumble(
+    const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) {
    const auto joystick =
        GetSDLJoystickByGUID(identifier.guid.Format(), static_cast<int>(identifier.port));
    const auto process_amplitude_exp = [](f32 amplitude, f32 factor) {
@@ -526,6 +528,7 @@ Common::Input::VibrationError SDLDriver::SetRumble(const PadIdentifier& identifi

    return Common::Input::VibrationError::None;
 }
+
 Common::ParamPackage SDLDriver::BuildAnalogParamPackageForButton(int port, std::string guid,
                                                                 s32 axis, float value) const {
    Common::ParamPackage params{};
--- a/src/input_common/drivers/sdl_driver.h
+++ b/src/input_common/drivers/sdl_driver.h
@@ -19,19 +19,19 @@ using SDL_GameController = struct _SDL_GameController;
 using SDL_Joystick = struct _SDL_Joystick;
 using SDL_JoystickID = s32;

+namespace InputCommon {
+
+class SDLJoystick;
+
 using ButtonBindings =
    std::array<std::pair<Settings::NativeButton::Values, SDL_GameControllerButton>, 17>;
 using ZButtonBindings =
    std::array<std::pair<Settings::NativeButton::Values, SDL_GameControllerAxis>, 2>;

-namespace InputCommon {
-
-class SDLJoystick;
-
-class SDLDriver : public InputCommon::InputEngine {
+class SDLDriver : public InputEngine {
 public:
    /// Initializes and registers SDL device factories
-    SDLDriver(const std::string& input_engine_);
+    explicit SDLDriver(std::string input_engine_);

    /// Unregisters SDL device factories and shut them down.
    ~SDLDriver() override;
@@ -59,7 +59,7 @@ public:
    u8 GetHatButtonId(const std::string& direction_name) const override;

    Common::Input::VibrationError SetRumble(
-        const PadIdentifier& identifier, const Common::Input::VibrationStatus vibration) override;
+        const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) override;

 private:
    void InitJoystick(int joystick_index);
--- a/src/input_common/drivers/tas_input.cpp
+++ b/src/input_common/drivers/tas_input.cpp
@@ -3,7 +3,6 @@
 // Refer to the license.txt file included.

 #include <cstring>
-#include <regex>
 #include <fmt/format.h>

 #include "common/fs/file.h"
@@ -15,7 +14,7 @@

 namespace InputCommon::TasInput {

-enum TasAxes : u8 {
+enum class Tas::TasAxis : u8 {
    StickX,
    StickY,
    SubstickX,
@@ -47,7 +46,7 @@ constexpr std::array<std::pair<std::string_view, TasButton>, 20> text_to_tas_but
    {"KEY_ZR", TasButton::TRIGGER_ZR},
 };

-Tas::Tas(const std::string& input_engine_) : InputCommon::InputEngine(input_engine_) {
+Tas::Tas(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    for (size_t player_index = 0; player_index < PLAYER_NUMBER; player_index++) {
        PadIdentifier identifier{
            .guid = Common::UUID{},
@@ -66,7 +65,7 @@ Tas::Tas(const std::string& input_engine_) : InputCommon::InputEngine(input_engi

 Tas::~Tas() {
    Stop();
-};
+}

 void Tas::LoadTasFiles() {
    script_length = 0;
@@ -79,43 +78,43 @@ void Tas::LoadTasFiles() {
 }

 void Tas::LoadTasFile(size_t player_index, size_t file_index) {
-    if (!commands[player_index].empty()) {
-        commands[player_index].clear();
-    }
+    commands[player_index].clear();
+
    std::string file = Common::FS::ReadStringFromFile(
        Common::FS::GetYuzuPath(Common::FS::YuzuPath::TASDir) /
            fmt::format("script{}-{}.txt", file_index, player_index + 1),
        Common::FS::FileType::BinaryFile);
-    std::stringstream command_line(file);
+    std::istringstream command_line(file);
    std::string line;
    int frame_no = 0;
    while (std::getline(command_line, line, '\n')) {
        if (line.empty()) {
            continue;
        }
-        std::smatch m;

-        std::stringstream linestream(line);
-        std::string segment;
-        std::vector<std::string> seglist;
-
-        while (std::getline(linestream, segment, ' ')) {
-            seglist.push_back(segment);
+        std::vector<std::string> seg_list;
+        {
+            std::istringstream line_stream(line);
+            std::string segment;
+            while (std::getline(line_stream, segment, ' ')) {
+                seg_list.push_back(std::move(segment));
+            }
        }

-        if (seglist.size() < 4) {
+        if (seg_list.size() < 4) {
            continue;
        }

-        while (frame_no < std::stoi(seglist.at(0))) {
-            commands[player_index].push_back({});
+        const auto num_frames = std::stoi(seg_list[0]);
+        while (frame_no < num_frames) {
+            commands[player_index].emplace_back();
            frame_no++;
        }

        TASCommand command = {
-            .buttons = ReadCommandButtons(seglist.at(1)),
-            .l_axis = ReadCommandAxis(seglist.at(2)),
-            .r_axis = ReadCommandAxis(seglist.at(3)),
+            .buttons = ReadCommandButtons(seg_list[1]),
+            .l_axis = ReadCommandAxis(seg_list[2]),
+            .r_axis = ReadCommandAxis(seg_list[3]),
        };
        commands[player_index].push_back(command);
        frame_no++;
@@ -123,16 +122,17 @@ void Tas::LoadTasFile(size_t player_index, size_t file_index) {
    LOG_INFO(Input, "TAS file loaded! {} frames", frame_no);
 }

-void Tas::WriteTasFile(std::u8string file_name) {
+void Tas::WriteTasFile(std::u8string_view file_name) {
    std::string output_text;
    for (size_t frame = 0; frame < record_commands.size(); frame++) {
        const TASCommand& line = record_commands[frame];
        output_text += fmt::format("{} {} {} {}\n", frame, WriteCommandButtons(line.buttons),
                                   WriteCommandAxis(line.l_axis), WriteCommandAxis(line.r_axis));
    }
-    const auto bytes_written = Common::FS::WriteStringToFile(
-        Common::FS::GetYuzuPath(Common::FS::YuzuPath::TASDir) / file_name,
-        Common::FS::FileType::TextFile, output_text);
+
+    const auto tas_file_name = Common::FS::GetYuzuPath(Common::FS::YuzuPath::TASDir) / file_name;
+    const auto bytes_written =
+        Common::FS::WriteStringToFile(tas_file_name, Common::FS::FileType::TextFile, output_text);
    if (bytes_written == output_text.size()) {
        LOG_INFO(Input, "TAS file written to file!");
    } else {
@@ -205,10 +205,10 @@ void Tas::UpdateThread() {
                const int button = static_cast<int>(i);
                SetButton(identifier, button, button_status);
            }
-            SetAxis(identifier, TasAxes::StickX, command.l_axis.x);
-            SetAxis(identifier, TasAxes::StickY, command.l_axis.y);
-            SetAxis(identifier, TasAxes::SubstickX, command.r_axis.x);
-            SetAxis(identifier, TasAxes::SubstickY, command.r_axis.y);
+            SetTasAxis(identifier, TasAxis::StickX, command.l_axis.x);
+            SetTasAxis(identifier, TasAxis::StickY, command.l_axis.y);
+            SetTasAxis(identifier, TasAxis::SubstickX, command.r_axis.x);
+            SetTasAxis(identifier, TasAxis::SubstickY, command.r_axis.y);
        }
    } else {
        is_running = Settings::values.tas_loop.GetValue();
@@ -224,27 +224,28 @@ void Tas::ClearInput() {
 }

 TasAnalog Tas::ReadCommandAxis(const std::string& line) const {
-    std::stringstream linestream(line);
-    std::string segment;
-    std::vector<std::string> seglist;
-
-    while (std::getline(linestream, segment, ';')) {
-        seglist.push_back(segment);
+    std::vector<std::string> seg_list;
+    {
+        std::istringstream line_stream(line);
+        std::string segment;
+        while (std::getline(line_stream, segment, ';')) {
+            seg_list.push_back(std::move(segment));
+        }
    }

-    const float x = std::stof(seglist.at(0)) / 32767.0f;
-    const float y = std::stof(seglist.at(1)) / 32767.0f;
+    const float x = std::stof(seg_list.at(0)) / 32767.0f;
+    const float y = std::stof(seg_list.at(1)) / 32767.0f;

    return {x, y};
 }

-u64 Tas::ReadCommandButtons(const std::string& data) const {
-    std::stringstream button_text(data);
-    std::string line;
+u64 Tas::ReadCommandButtons(const std::string& line) const {
+    std::istringstream button_text(line);
+    std::string button_line;
    u64 buttons = 0;
-    while (std::getline(button_text, line, ';')) {
-        for (auto [text, tas_button] : text_to_tas_button) {
-            if (text == line) {
+    while (std::getline(button_text, button_line, ';')) {
+        for (const auto& [text, tas_button] : text_to_tas_button) {
+            if (text == button_line) {
                buttons |= static_cast<u64>(tas_button);
                break;
            }
@@ -254,8 +255,8 @@ u64 Tas::ReadCommandButtons(const std::string& data) const {
 }

 std::string Tas::WriteCommandButtons(u64 buttons) const {
-    std::string returns = "";
-    for (auto [text_button, tas_button] : text_to_tas_button) {
+    std::string returns;
+    for (const auto& [text_button, tas_button] : text_to_tas_button) {
        if ((buttons & static_cast<u64>(tas_button)) != 0) {
            returns += fmt::format("{};", text_button);
        }
@@ -267,6 +268,10 @@ std::string Tas::WriteCommandAxis(TasAnalog analog) const {
    return fmt::format("{};{}", analog.x * 32767, analog.y * 32767);
 }

+void Tas::SetTasAxis(const PadIdentifier& identifier, TasAxis axis, f32 value) {
+    SetAxis(identifier, static_cast<int>(axis), value);
+}
+
 void Tas::StartStop() {
    if (!Settings::values.tas_enable) {
        return;
--- a/src/input_common/drivers/tas_input.h
+++ b/src/input_common/drivers/tas_input.h
@@ -5,11 +5,11 @@
 #pragma once

 #include <array>
+#include <string>
+#include <vector>

 #include "common/common_types.h"
-#include "common/settings_input.h"
 #include "input_common/input_engine.h"
-#include "input_common/main.h"

 /*
 To play back TAS scripts on Yuzu, select the folder with scripts in the configuration menu below
@@ -81,46 +81,46 @@ enum class TasState {
    Stopped,
 };

-class Tas final : public InputCommon::InputEngine {
+class Tas final : public InputEngine {
 public:
-    explicit Tas(const std::string& input_engine_);
-    ~Tas();
+    explicit Tas(std::string input_engine_);
+    ~Tas() override;

    /**
     * Changes the input status that will be stored in each frame
-     * @param buttons: bitfield with the status of the buttons
-     * @param left_axis: value of the left axis
-     * @param right_axis: value of the right axis
+     * @param buttons    Bitfield with the status of the buttons
+     * @param left_axis  Value of the left axis
+     * @param right_axis Value of the right axis
     */
    void RecordInput(u64 buttons, TasAnalog left_axis, TasAnalog right_axis);

    // Main loop that records or executes input
    void UpdateThread();

-    //  Sets the flag to start or stop the TAS command excecution and swaps controllers profiles
+    // Sets the flag to start or stop the TAS command execution and swaps controllers profiles
    void StartStop();

-    //  Stop the TAS and reverts any controller profile
+    // Stop the TAS and reverts any controller profile
    void Stop();

-    // Sets the flag to reload the file and start from the begining in the next update
+    // Sets the flag to reload the file and start from the beginning in the next update
    void Reset();

    /**
     * Sets the flag to enable or disable recording of inputs
-     * @return Returns true if the current recording status is enabled
+     * @returns true if the current recording status is enabled
     */
    bool Record();

    /**
     * Saves contents of record_commands on a file
-     * @param overwrite_file: Indicates if player 1 should be overwritten
+     * @param overwrite_file Indicates if player 1 should be overwritten
     */
    void SaveRecording(bool overwrite_file);

    /**
     * Returns the current status values of TAS playback/recording
-     * @return Tuple of
+     * @returns A Tuple of
     * TasState indicating the current state out of Running ;
     * Current playback progress ;
     * Total length of script file currently loaded or being recorded
@@ -128,6 +128,8 @@ public:
    std::tuple<TasState, size_t, size_t> GetStatus() const;

 private:
+    enum class TasAxis : u8;
+
    struct TASCommand {
        u64 buttons{};
        TasAnalog l_axis{};
@@ -137,29 +139,31 @@ private:
    /// Loads TAS files from all players
    void LoadTasFiles();

-    /** Loads TAS file from the specified player
-     * @param player_index: player number to save the script
-     * @param file_index: script number of the file
+    /**
+     * Loads TAS file from the specified player
+     * @param player_index Player number to save the script
+     * @param file_index   Script number of the file
     */
    void LoadTasFile(size_t player_index, size_t file_index);

-    /** Writes a TAS file from the recorded commands
-     * @param file_name: name of the file to be written
+    /**
+     * Writes a TAS file from the recorded commands
+     * @param file_name Name of the file to be written
     */
-    void WriteTasFile(std::u8string file_name);
+    void WriteTasFile(std::u8string_view file_name);

    /**
     * Parses a string containing the axis values. X and Y have a range from -32767 to 32767
-     * @param line: string containing axis values with the following format "x;y"
-     * @return Returns a TAS analog object with axis values with range from -1.0 to 1.0
+     * @param line String containing axis values with the following format "x;y"
+     * @returns A TAS analog object with axis values with range from -1.0 to 1.0
     */
    TasAnalog ReadCommandAxis(const std::string& line) const;

    /**
     * Parses a string containing the button values. Each button is represented by it's text format
     * specified in text_to_tas_button array
-     * @param line: string containing button name with the following format "a;b;c;d..."
-     * @return Returns a u64 with each bit representing the status of a button
+     * @param line string containing button name with the following format "a;b;c;d..."
+     * @returns A u64 with each bit representing the status of a button
     */
    u64 ReadCommandButtons(const std::string& line) const;

@@ -170,17 +174,20 @@ private:

    /**
     * Converts an u64 containing the button status into the text equivalent
-     * @param buttons: bitfield with the status of the buttons
-     * @return Returns a string with the name of the buttons to be written to the file
+     * @param buttons Bitfield with the status of the buttons
+     * @returns A string with the name of the buttons to be written to the file
     */
    std::string WriteCommandButtons(u64 buttons) const;

    /**
     * Converts an TAS analog object containing the axis status into the text equivalent
-     * @param data: value of the axis
-     * @return A string with the value of the axis to be written to the file
+     * @param analog Value of the axis
+     * @returns A string with the value of the axis to be written to the file
     */
-    std::string WriteCommandAxis(TasAnalog data) const;
+    std::string WriteCommandAxis(TasAnalog analog) const;
+
+    /// Sets an axis for a particular pad to the given value.
+    void SetTasAxis(const PadIdentifier& identifier, TasAxis axis, f32 value);

    size_t script_length{0};
    bool is_recording{false};
--- a/src/input_common/drivers/touch_screen.cpp
+++ b/src/input_common/drivers/touch_screen.cpp
@@ -13,7 +13,7 @@ constexpr PadIdentifier identifier = {
    .pad = 0,
 };

-TouchScreen::TouchScreen(const std::string& input_engine_) : InputEngine(input_engine_) {
+TouchScreen::TouchScreen(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    PreSetController(identifier);
 }

--- a/src/input_common/drivers/touch_screen.h
+++ b/src/input_common/drivers/touch_screen.h
@@ -12,9 +12,9 @@ namespace InputCommon {
 * A button device factory representing a keyboard. It receives keyboard events and forward them
 * to all button devices it created.
 */
-class TouchScreen final : public InputCommon::InputEngine {
+class TouchScreen final : public InputEngine {
 public:
-    explicit TouchScreen(const std::string& input_engine_);
+    explicit TouchScreen(std::string input_engine_);

    /**
     * Signals that mouse has moved.
--- a/src/input_common/drivers/udp_client.cpp
+++ b/src/input_common/drivers/udp_client.cpp
@@ -136,7 +136,7 @@ static void SocketLoop(Socket* socket) {
    socket->Loop();
 }

-UDPClient::UDPClient(const std::string& input_engine_) : InputEngine(input_engine_) {
+UDPClient::UDPClient(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
    LOG_INFO(Input, "Udp Initialization started");
    ReloadSockets();
 }
@@ -536,42 +536,46 @@ CalibrationConfigurationJob::CalibrationConfigurationJob(
    std::function<void(u16, u16, u16, u16)> data_callback) {

    std::thread([=, this] {
+        u16 min_x{UINT16_MAX};
+        u16 min_y{UINT16_MAX};
+        u16 max_x{};
+        u16 max_y{};
+
        Status current_status{Status::Initialized};
-        SocketCallback callback{
-            [](Response::Version) {}, [](Response::PortInfo) {},
-            [&](Response::PadData data) {
-                static constexpr u16 CALIBRATION_THRESHOLD = 100;
-                static constexpr u16 MAX_VALUE = UINT16_MAX;
+        SocketCallback callback{[](Response::Version) {}, [](Response::PortInfo) {},
+                                [&](Response::PadData data) {
+                                    constexpr u16 CALIBRATION_THRESHOLD = 100;

-                if (current_status == Status::Initialized) {
-                    // Receiving data means the communication is ready now
-                    current_status = Status::Ready;
-                    status_callback(current_status);
-                }
-                const auto& touchpad_0 = data.touch[0];
-                if (touchpad_0.is_active == 0) {
-                    return;
-                }
-                LOG_DEBUG(Input, "Current touch: {} {}", touchpad_0.x, touchpad_0.y);
-                const u16 min_x = std::min(MAX_VALUE, static_cast<u16>(touchpad_0.x));
-                const u16 min_y = std::min(MAX_VALUE, static_cast<u16>(touchpad_0.y));
-                if (current_status == Status::Ready) {
-                    // First touch - min data (min_x/min_y)
-                    current_status = Status::Stage1Completed;
-                    status_callback(current_status);
-                }
-                if (touchpad_0.x - min_x > CALIBRATION_THRESHOLD &&
-                    touchpad_0.y - min_y > CALIBRATION_THRESHOLD) {
-                    // Set the current position as max value and finishes configuration
-                    const u16 max_x = touchpad_0.x;
-                    const u16 max_y = touchpad_0.y;
-                    current_status = Status::Completed;
-                    data_callback(min_x, min_y, max_x, max_y);
-                    status_callback(current_status);
+                                    if (current_status == Status::Initialized) {
+                                        // Receiving data means the communication is ready now
+                                        current_status = Status::Ready;
+                                        status_callback(current_status);
+                                    }
+                                    if (data.touch[0].is_active == 0) {
+                                        return;
+                                    }
+                                    LOG_DEBUG(Input, "Current touch: {} {}", data.touch[0].x,
+                                              data.touch[0].y);
+                                    min_x = std::min(min_x, static_cast<u16>(data.touch[0].x));
+                                    min_y = std::min(min_y, static_cast<u16>(data.touch[0].y));
+                                    if (current_status == Status::Ready) {
+                                        // First touch - min data (min_x/min_y)
+                                        current_status = Status::Stage1Completed;
+                                        status_callback(current_status);
+                                    }
+                                    if (data.touch[0].x - min_x > CALIBRATION_THRESHOLD &&
+                                        data.touch[0].y - min_y > CALIBRATION_THRESHOLD) {
+                                        // Set the current position as max value and finishes
+                                        // configuration
+                                        max_x = data.touch[0].x;
+                                        max_y = data.touch[0].y;
+                                        current_status = Status::Completed;
+                                        data_callback(min_x, min_y, max_x, max_y);
+                                        status_callback(current_status);

-                    complete_event.Set();
-                }
-            }};
+                                        complete_event.Set();
+                                    }
+                                }};
        Socket socket{host, port, std::move(callback)};
        std::thread worker_thread{SocketLoop, &socket};
        complete_event.Wait();
--- a/src/input_common/drivers/udp_client.h
+++ b/src/input_common/drivers/udp_client.h
@@ -49,10 +49,10 @@ struct DeviceStatus {
 * A button device factory representing a keyboard. It receives keyboard events and forward them
 * to all button devices it created.
 */
-class UDPClient final : public InputCommon::InputEngine {
+class UDPClient final : public InputEngine {
 public:
-    explicit UDPClient(const std::string& input_engine_);
-    ~UDPClient();
+    explicit UDPClient(std::string input_engine_);
+    ~UDPClient() override;

    void ReloadSockets();

--- a/src/input_common/helpers/stick_from_buttons.cpp
+++ b/src/input_common/helpers/stick_from_buttons.cpp
@@ -19,23 +19,36 @@ public:
        : up(std::move(up_)), down(std::move(down_)), left(std::move(left_)),
          right(std::move(right_)), modifier(std::move(modifier_)), modifier_scale(modifier_scale_),
          modifier_angle(modifier_angle_) {
-        Common::Input::InputCallback button_up_callback{
-            [this](Common::Input::CallbackStatus callback_) { UpdateUpButtonStatus(callback_); }};
-        Common::Input::InputCallback button_down_callback{
-            [this](Common::Input::CallbackStatus callback_) { UpdateDownButtonStatus(callback_); }};
-        Common::Input::InputCallback button_left_callback{
-            [this](Common::Input::CallbackStatus callback_) { UpdateLeftButtonStatus(callback_); }};
-        Common::Input::InputCallback button_right_callback{
-            [this](Common::Input::CallbackStatus callback_) {
-                UpdateRightButtonStatus(callback_);
-            }};
-        Common::Input::InputCallback button_modifier_callback{
-            [this](Common::Input::CallbackStatus callback_) { UpdateModButtonStatus(callback_); }};
-        up->SetCallback(button_up_callback);
-        down->SetCallback(button_down_callback);
-        left->SetCallback(button_left_callback);
-        right->SetCallback(button_right_callback);
-        modifier->SetCallback(button_modifier_callback);
+        up->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateUpButtonStatus(callback_);
+                },
+        });
+        down->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateDownButtonStatus(callback_);
+                },
+        });
+        left->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateLeftButtonStatus(callback_);
+                },
+        });
+        right->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateRightButtonStatus(callback_);
+                },
+        });
+        modifier->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateModButtonStatus(callback_);
+                },
+        });
        last_x_axis_value = 0.0f;
        last_y_axis_value = 0.0f;
    }
@@ -133,27 +146,27 @@ public:
        }
    }

-    void UpdateUpButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateUpButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        up_status = button_callback.button_status.value;
        UpdateStatus();
    }

-    void UpdateDownButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateDownButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        down_status = button_callback.button_status.value;
        UpdateStatus();
    }

-    void UpdateLeftButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateLeftButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        left_status = button_callback.button_status.value;
        UpdateStatus();
    }

-    void UpdateRightButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateRightButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        right_status = button_callback.button_status.value;
        UpdateStatus();
    }

-    void UpdateModButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateModButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        modifier_status = button_callback.button_status.value;
        UpdateStatus();
    }
@@ -265,18 +278,18 @@ private:
    Button left;
    Button right;
    Button modifier;
-    float modifier_scale;
-    float modifier_angle;
+    float modifier_scale{};
+    float modifier_angle{};
    float angle{};
    float goal_angle{};
    float amplitude{};
-    bool up_status;
-    bool down_status;
-    bool left_status;
-    bool right_status;
-    bool modifier_status;
-    float last_x_axis_value;
-    float last_y_axis_value;
+    bool up_status{};
+    bool down_status{};
+    bool left_status{};
+    bool right_status{};
+    bool modifier_status{};
+    float last_x_axis_value{};
+    float last_y_axis_value{};
    const Common::Input::AnalogProperties properties{0.0f, 1.0f, 0.5f, 0.0f, false};
    std::chrono::time_point<std::chrono::steady_clock> last_update;
 };
--- a/src/input_common/helpers/touch_from_buttons.cpp
+++ b/src/input_common/helpers/touch_from_buttons.cpp
@@ -14,10 +14,13 @@ public:
    using Button = std::unique_ptr<Common::Input::InputDevice>;
    TouchFromButtonDevice(Button button_, int touch_id_, float x_, float y_)
        : button(std::move(button_)), touch_id(touch_id_), x(x_), y(y_) {
-        Common::Input::InputCallback button_up_callback{
-            [this](Common::Input::CallbackStatus callback_) { UpdateButtonStatus(callback_); }};
        last_button_value = false;
-        button->SetCallback(button_up_callback);
+        button->SetCallback({
+            .on_change =
+                [this](const Common::Input::CallbackStatus& callback_) {
+                    UpdateButtonStatus(callback_);
+                },
+        });
        button->ForceUpdate();
    }

@@ -47,7 +50,7 @@ public:
        return status;
    }

-    void UpdateButtonStatus(Common::Input::CallbackStatus button_callback) {
+    void UpdateButtonStatus(const Common::Input::CallbackStatus& button_callback) {
        const Common::Input::CallbackStatus status{
            .type = Common::Input::InputType::Touch,
            .touch_status = GetStatus(button_callback.button_status.value),
--- a/src/input_common/helpers/udp_protocol.h
+++ b/src/input_common/helpers/udp_protocol.h
@@ -54,6 +54,18 @@ struct Message {
 template <typename T>
 constexpr Type GetMessageType();

+template <typename T>
+Message<T> CreateMessage(const u32 magic, const T data, const u32 sender_id) {
+    boost::crc_32_type crc;
+    Header header{
+        magic, PROTOCOL_VERSION, sizeof(T) + sizeof(Type), 0, sender_id, GetMessageType<T>(),
+    };
+    Message<T> message{header, data};
+    crc.process_bytes(&message, sizeof(Message<T>));
+    message.header.crc = crc.checksum();
+    return message;
+}
+
 namespace Request {

 enum RegisterFlags : u8 {
@@ -101,14 +113,7 @@ static_assert(std::is_trivially_copyable_v<PadData>,
 */
 template <typename T>
 Message<T> Create(const T data, const u32 client_id = 0) {
-    boost::crc_32_type crc;
-    Header header{
-        CLIENT_MAGIC, PROTOCOL_VERSION, sizeof(T) + sizeof(Type), 0, client_id, GetMessageType<T>(),
-    };
-    Message<T> message{header, data};
-    crc.process_bytes(&message, sizeof(Message<T>));
-    message.header.crc = crc.checksum();
-    return message;
+    return CreateMessage(CLIENT_MAGIC, data, client_id);
 }
 } // namespace Request

--- a/src/input_common/input_engine.cpp
+++ b/src/input_common/input_engine.cpp
@@ -10,41 +10,31 @@ namespace InputCommon {

 void InputEngine::PreSetController(const PadIdentifier& identifier) {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
-        controller_list.insert_or_assign(identifier, ControllerData{});
-    }
+    controller_list.try_emplace(identifier);
 }

 void InputEngine::PreSetButton(const PadIdentifier& identifier, int button) {
    std::lock_guard lock{mutex};
    ControllerData& controller = controller_list.at(identifier);
-    if (!controller.buttons.contains(button)) {
-        controller.buttons.insert_or_assign(button, false);
-    }
+    controller.buttons.try_emplace(button, false);
 }

 void InputEngine::PreSetHatButton(const PadIdentifier& identifier, int button) {
    std::lock_guard lock{mutex};
    ControllerData& controller = controller_list.at(identifier);
-    if (!controller.hat_buttons.contains(button)) {
-        controller.hat_buttons.insert_or_assign(button, u8{0});
-    }
+    controller.hat_buttons.try_emplace(button, u8{0});
 }

 void InputEngine::PreSetAxis(const PadIdentifier& identifier, int axis) {
    std::lock_guard lock{mutex};
    ControllerData& controller = controller_list.at(identifier);
-    if (!controller.axes.contains(axis)) {
-        controller.axes.insert_or_assign(axis, 0.0f);
-    }
+    controller.axes.try_emplace(axis, 0.0f);
 }

 void InputEngine::PreSetMotion(const PadIdentifier& identifier, int motion) {
    std::lock_guard lock{mutex};
    ControllerData& controller = controller_list.at(identifier);
-    if (!controller.motions.contains(motion)) {
-        controller.motions.insert_or_assign(motion, BasicMotion{});
-    }
+    controller.motions.try_emplace(motion);
 }

 void InputEngine::SetButton(const PadIdentifier& identifier, int button, bool value) {
@@ -91,7 +81,7 @@ void InputEngine::SetBattery(const PadIdentifier& identifier, BatteryLevel value
    TriggerOnBatteryChange(identifier, value);
 }

-void InputEngine::SetMotion(const PadIdentifier& identifier, int motion, BasicMotion value) {
+void InputEngine::SetMotion(const PadIdentifier& identifier, int motion, const BasicMotion& value) {
    {
        std::lock_guard lock{mutex};
        ControllerData& controller = controller_list.at(identifier);
@@ -104,85 +94,93 @@ void InputEngine::SetMotion(const PadIdentifier& identifier, int motion, BasicMo

 bool InputEngine::GetButton(const PadIdentifier& identifier, int button) const {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
+    const auto controller_iter = controller_list.find(identifier);
+    if (controller_iter == controller_list.cend()) {
        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
                  identifier.pad, identifier.port);
        return false;
    }
-    ControllerData controller = controller_list.at(identifier);
-    if (!controller.buttons.contains(button)) {
+    const ControllerData& controller = controller_iter->second;
+    const auto button_iter = controller.buttons.find(button);
+    if (button_iter == controller.buttons.cend()) {
        LOG_ERROR(Input, "Invalid button {}", button);
        return false;
    }
-    return controller.buttons.at(button);
+    return button_iter->second;
 }

 bool InputEngine::GetHatButton(const PadIdentifier& identifier, int button, u8 direction) const {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
+    const auto controller_iter = controller_list.find(identifier);
+    if (controller_iter == controller_list.cend()) {
        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
                  identifier.pad, identifier.port);
        return false;
    }
-    ControllerData controller = controller_list.at(identifier);
-    if (!controller.hat_buttons.contains(button)) {
+    const ControllerData& controller = controller_iter->second;
+    const auto hat_iter = controller.hat_buttons.find(button);
+    if (hat_iter == controller.hat_buttons.cend()) {
        LOG_ERROR(Input, "Invalid hat button {}", button);
        return false;
    }
-    return (controller.hat_buttons.at(button) & direction) != 0;
+    return (hat_iter->second & direction) != 0;
 }

 f32 InputEngine::GetAxis(const PadIdentifier& identifier, int axis) const {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
+    const auto controller_iter = controller_list.find(identifier);
+    if (controller_iter == controller_list.cend()) {
        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
                  identifier.pad, identifier.port);
        return 0.0f;
    }
-    ControllerData controller = controller_list.at(identifier);
-    if (!controller.axes.contains(axis)) {
+    const ControllerData& controller = controller_iter->second;
+    const auto axis_iter = controller.axes.find(axis);
+    if (axis_iter == controller.axes.cend()) {
        LOG_ERROR(Input, "Invalid axis {}", axis);
        return 0.0f;
    }
-    return controller.axes.at(axis);
+    return axis_iter->second;
 }

 BatteryLevel InputEngine::GetBattery(const PadIdentifier& identifier) const {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
+    const auto controller_iter = controller_list.find(identifier);
+    if (controller_iter == controller_list.cend()) {
        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
                  identifier.pad, identifier.port);
        return BatteryLevel::Charging;
    }
-    ControllerData controller = controller_list.at(identifier);
+    const ControllerData& controller = controller_iter->second;
    return controller.battery;
 }

 BasicMotion InputEngine::GetMotion(const PadIdentifier& identifier, int motion) const {
    std::lock_guard lock{mutex};
-    if (!controller_list.contains(identifier)) {
+    const auto controller_iter = controller_list.find(identifier);
+    if (controller_iter == controller_list.cend()) {
        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
                  identifier.pad, identifier.port);
        return {};
    }
-    ControllerData controller = controller_list.at(identifier);
+    const ControllerData& controller = controller_iter->second;
    return controller.motions.at(motion);
 }

 void InputEngine::ResetButtonState() {
-    for (std::pair<PadIdentifier, ControllerData> controller : controller_list) {
-        for (std::pair<int, bool> button : controller.second.buttons) {
+    for (const auto& controller : controller_list) {
+        for (const auto& button : controller.second.buttons) {
            SetButton(controller.first, button.first, false);
        }
-        for (std::pair<int, bool> button : controller.second.hat_buttons) {
+        for (const auto& button : controller.second.hat_buttons) {
            SetHatButton(controller.first, button.first, false);
        }
    }
 }

 void InputEngine::ResetAnalogState() {
-    for (std::pair<PadIdentifier, ControllerData> controller : controller_list) {
-        for (std::pair<int, float> axis : controller.second.axes) {
+    for (const auto& controller : controller_list) {
+        for (const auto& axis : controller.second.axes) {
            SetAxis(controller.first, axis.first, 0.0);
        }
    }
@@ -190,7 +188,7 @@ void InputEngine::ResetAnalogState() {

 void InputEngine::TriggerOnButtonChange(const PadIdentifier& identifier, int button, bool value) {
    std::lock_guard lock{mutex_callback};
-    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+    for (const auto& poller_pair : callback_list) {
        const InputIdentifier& poller = poller_pair.second;
        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Button, button)) {
            continue;
@@ -218,7 +216,7 @@ void InputEngine::TriggerOnButtonChange(const PadIdentifier& identifier, int but

 void InputEngine::TriggerOnHatButtonChange(const PadIdentifier& identifier, int button, u8 value) {
    std::lock_guard lock{mutex_callback};
-    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+    for (const auto& poller_pair : callback_list) {
        const InputIdentifier& poller = poller_pair.second;
        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::HatButton, button)) {
            continue;
@@ -247,7 +245,7 @@ void InputEngine::TriggerOnHatButtonChange(const PadIdentifier& identifier, int

 void InputEngine::TriggerOnAxisChange(const PadIdentifier& identifier, int axis, f32 value) {
    std::lock_guard lock{mutex_callback};
-    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+    for (const auto& poller_pair : callback_list) {
        const InputIdentifier& poller = poller_pair.second;
        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Analog, axis)) {
            continue;
@@ -274,7 +272,7 @@ void InputEngine::TriggerOnAxisChange(const PadIdentifier& identifier, int axis,
 void InputEngine::TriggerOnBatteryChange(const PadIdentifier& identifier,
                                         [[maybe_unused]] BatteryLevel value) {
    std::lock_guard lock{mutex_callback};
-    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+    for (const auto& poller_pair : callback_list) {
        const InputIdentifier& poller = poller_pair.second;
        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Battery, 0)) {
            continue;
@@ -286,9 +284,9 @@ void InputEngine::TriggerOnBatteryChange(const PadIdentifier& identifier,
 }

 void InputEngine::TriggerOnMotionChange(const PadIdentifier& identifier, int motion,
-                                        BasicMotion value) {
+                                        const BasicMotion& value) {
    std::lock_guard lock{mutex_callback};
-    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+    for (const auto& poller_pair : callback_list) {
        const InputIdentifier& poller = poller_pair.second;
        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Motion, motion)) {
            continue;
@@ -342,7 +340,7 @@ const std::string& InputEngine::GetEngineName() const {

 int InputEngine::SetCallback(InputIdentifier input_identifier) {
    std::lock_guard lock{mutex_callback};
-    callback_list.insert_or_assign(last_callback_key, input_identifier);
+    callback_list.insert_or_assign(last_callback_key, std::move(input_identifier));
    return last_callback_key++;
 }

--- a/Show More
+++ b/Show More