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Meta: Detect nested KVM support for WSL2 and use that when available

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This allows running QEMU inside WSL2 for hosts which have nested KVM
and WSLg support (e.g. Windows 11).

Running QEMU inside the WSL2 VM is slightly slower than running QEMU
on Windows, probably because of how WSLg handles screen updates.
This commit is contained in:
Gunnar Beutner 2021-08-04 06:22:38 +02:00 committed by Andreas Kling
parent 723c89af67
commit d9d2287a11
Notes: sideshowbarker 2024-07-18 07:28:59 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/d9d2287a11f
Pull-request: https://github.com/SerenityOS/serenity/pull/9199
1 changed files with 19 additions and 8 deletions
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27
Meta/run.sh
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@ -10,7 +10,8 @@ die() {
#SERENITY_PACKET_LOGGING_ARG="-object filter-dump,id=hue,netdev=breh,file=e1000.pcap" #SERENITY_PACKET_LOGGING_ARG="-object filter-dump,id=hue,netdev=breh,file=e1000.pcap"
[ -e /dev/kvm ] && [ -r /dev/kvm ] && [ -w /dev/kvm ] && SERENITY_VIRT_TECH_ARG="-enable-kvm" KVM_SUPPORT="0"
[ -e /dev/kvm ] && [ -r /dev/kvm ] && [ -w /dev/kvm ] && KVM_SUPPORT="1"
[ -z "$SERENITY_BOCHS_BIN" ] && SERENITY_BOCHS_BIN="bochs" [ -z "$SERENITY_BOCHS_BIN" ] && SERENITY_BOCHS_BIN="bochs"
@ -41,10 +42,14 @@ if [ -z "$SERENITY_QEMU_BIN" ]; then
if command -v wslpath >/dev/null; then if command -v wslpath >/dev/null; then
QEMU_INSTALL_DIR=$(reg.exe query 'HKLM\Software\QEMU' /v Install_Dir /t REG_SZ | grep '^ Install_Dir' | sed 's/ / /g' | cut -f4- -d' ') QEMU_INSTALL_DIR=$(reg.exe query 'HKLM\Software\QEMU' /v Install_Dir /t REG_SZ | grep '^ Install_Dir' | sed 's/ / /g' | cut -f4- -d' ')
if [ -z "$QEMU_INSTALL_DIR" ]; then if [ -z "$QEMU_INSTALL_DIR" ]; then
die "Could not determine where QEMU for Windows is installed. Please make sure QEMU is installed or set SERENITY_QEMU_BIN if it is already installed." if [ "$KVM_SUPPORT" -eq "0" ]; then
die "Could not determine where QEMU for Windows is installed. Please make sure QEMU is installed or set SERENITY_QEMU_BIN if it is already installed."
fi
else
KVM_SUPPORT="0"
QEMU_BINARY_PREFIX="$(wslpath -- "${QEMU_INSTALL_DIR}" | tr -d '\r\n')/"
QEMU_BINARY_SUFFIX=".exe"
fi fi
QEMU_BINARY_PREFIX="$(wslpath -- "${QEMU_INSTALL_DIR}" | tr -d '\r\n')/"
QEMU_BINARY_SUFFIX=".exe"
fi fi
if command -v "${QEMU_BINARY_PREFIX}qemu-system-x86_64${QEMU_BINARY_SUFFIX}" >/dev/null; then if command -v "${QEMU_BINARY_PREFIX}qemu-system-x86_64${QEMU_BINARY_SUFFIX}" >/dev/null; then
SERENITY_QEMU_BIN="${QEMU_BINARY_PREFIX}qemu-system-x86_64${QEMU_BINARY_SUFFIX}" SERENITY_QEMU_BIN="${QEMU_BINARY_PREFIX}qemu-system-x86_64${QEMU_BINARY_SUFFIX}"
@ -56,6 +61,8 @@ if [ -z "$SERENITY_QEMU_BIN" ]; then
fi fi
fi fi
[ "$KVM_SUPPORT" -eq "1" ] && SERENITY_VIRT_TECH_ARG="-enable-kvm"
[ -z "$SERENITY_KERNEL_CMDLINE" ] && SERENITY_KERNEL_CMDLINE="hello" [ -z "$SERENITY_KERNEL_CMDLINE" ] && SERENITY_KERNEL_CMDLINE="hello"
[ -z "$SERENITY_RAM_SIZE" ] && SERENITY_RAM_SIZE=512M [ -z "$SERENITY_RAM_SIZE" ] && SERENITY_RAM_SIZE=512M
@ -90,6 +97,8 @@ if [ "$installed_major_version" -lt "$SERENITY_QEMU_MIN_REQ_VERSION" ]; then
die die
fi fi
NATIVE_WINDOWS_QEMU="0"
if command -v wslpath >/dev/null; then if command -v wslpath >/dev/null; then
case "$SERENITY_QEMU_BIN" in case "$SERENITY_QEMU_BIN" in
/mnt/?/*) /mnt/?/*)
@ -102,6 +111,8 @@ if command -v wslpath >/dev/null; then
fi fi
[ -z "$SERENITY_QEMU_CPU" ] && SERENITY_QEMU_CPU="max,vmx=off" [ -z "$SERENITY_QEMU_CPU" ] && SERENITY_QEMU_CPU="max,vmx=off"
SERENITY_KERNEL_CMDLINE="$SERENITY_KERNEL_CMDLINE disable_virtio" SERENITY_KERNEL_CMDLINE="$SERENITY_KERNEL_CMDLINE disable_virtio"
NATIVE_WINDOWS_QEMU="1"
;;
esac esac
fi fi
@ -115,7 +126,7 @@ fi
if [ "$(uname)" = "Darwin" ]; then if [ "$(uname)" = "Darwin" ]; then
SERENITY_AUDIO_BACKEND="-audiodev coreaudio,id=snd0" SERENITY_AUDIO_BACKEND="-audiodev coreaudio,id=snd0"
elif command -v wslpath >/dev/null; then elif [ "$NATIVE_WINDOWS_QEMU" -eq "1" ]; then
SERENITY_AUDIO_BACKEND="-audiodev dsound,id=snd0" SERENITY_AUDIO_BACKEND="-audiodev dsound,id=snd0"
elif "$SERENITY_QEMU_BIN" -audio-help 2>&1 | grep -- "-audiodev id=sdl" >/dev/null; then elif "$SERENITY_QEMU_BIN" -audio-help 2>&1 | grep -- "-audiodev id=sdl" >/dev/null; then
SERENITY_AUDIO_BACKEND="-audiodev sdl,id=snd0" SERENITY_AUDIO_BACKEND="-audiodev sdl,id=snd0"
@ -130,15 +141,15 @@ else
fi fi
SERENITY_SCREENS="${SERENITY_SCREENS:-1}" SERENITY_SCREENS="${SERENITY_SCREENS:-1}"
if [ "$SERENITY_SPICE" ]; then if [ "$SERENITY_SPICE" ]; then
SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-spice-app}" SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-spice-app}"
elif command -v wslpath >/dev/null; then elif [ "$NATIVE_WINDOWS_QEMU" -eq "1" ]; then
# QEMU for windows does not like gl=on, so detect if we are building in wsl, and if so, disable it # QEMU for windows does not like gl=on, so detect if we are building in wsl, and if so, disable it
# Also, when using the GTK backend we run into this problem: https://github.com/SerenityOS/serenity/issues/7657 # Also, when using the GTK backend we run into this problem: https://github.com/SerenityOS/serenity/issues/7657
SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=off}" SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=off}"
elif [ $SERENITY_SCREENS -gt 1 ] && "${SERENITY_QEMU_BIN}" --display help | grep -iq sdl; then elif [ $SERENITY_SCREENS -gt 1 ] && "${SERENITY_QEMU_BIN}" --display help | grep -iq sdl; then
SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=off}" SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=off}"
elif ("${SERENITY_QEMU_BIN}" --display help | grep -iq sdl) && (ldconfig -p | grep -iq virglrenderer); then elif ! command -v wslpath >/dev/null && ("${SERENITY_QEMU_BIN}" --display help | grep -iq sdl) && (ldconfig -p | grep -iq virglrenderer); then
SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=on}" SERENITY_QEMU_DISPLAY_BACKEND="${SERENITY_QEMU_DISPLAY_BACKEND:-sdl,gl=on}"
elif "${SERENITY_QEMU_BIN}" --display help | grep -iq cocoa; then elif "${SERENITY_QEMU_BIN}" --display help | grep -iq cocoa; then
# QEMU for OSX seems to only support cocoa # QEMU for OSX seems to only support cocoa