Allocating more CPU cores #70

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opened 2025-12-29 05:21:27 +01:00 by adam · 5 comments

adam commented 2025-12-29 05:21:27 +01:00

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Originally created by @sanderfoobar on GitHub (Oct 1, 2020).

Starting with:

docker run --device /dev/kvm --device /dev/snd -e CORES=8 -e RAM=10 -p 8888:5999 -p 50922:10022 -d --privileged docker-osx-vnc:latest

Does not start the VM. QEMU args (truncated):

qemu-system-x86_64 -m 10000 -cpu Penryn,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check -machine q35,accel=kvm:tcg -smp 4,cores=8 -usb[...]

CORES=4 works.

Just wondering, is it possible to allocate more cores?

Originally created by @sanderfoobar on GitHub (Oct 1, 2020). Starting with: ``` docker run --device /dev/kvm --device /dev/snd -e CORES=8 -e RAM=10 -p 8888:5999 -p 50922:10022 -d --privileged docker-osx-vnc:latest ``` Does not start the VM. QEMU args (truncated): ``` qemu-system-x86_64 -m 10000 -cpu Penryn,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check -machine q35,accel=kvm:tcg -smp 4,cores=8 -usb[...] ``` `CORES=4` works. Just wondering, is it possible to allocate more cores?

adam commented 2025-12-29 05:21:28 +01:00

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@sickcodes commented on GitHub (Oct 6, 2020):

I actually don't know the SMP, cores, sockets situation. I'll play around with it in virt-manager and come back with more info.

Someone else, or a QEMU whizz, would be better to answer this than me.

@sickcodes commented on GitHub (Oct 6, 2020): I actually don't know the SMP, cores, sockets situation. I'll play around with it in virt-manager and come back with more info. Someone else, or a QEMU whizz, would be better to answer this than me.

adam commented 2025-12-29 05:21:28 +01:00

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@iedwin commented on GitHub (Nov 23, 2020):

Starting with:

docker run --device /dev/kvm --device /dev/snd -e CORES=8 -e RAM=10 -p 8888:5999 -p 50922:10022 -d --privileged docker-osx-vnc:latest

Does not start the VM. QEMU args (truncated):

qemu-system-x86_64 -m 10000 -cpu Penryn,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check -machine q35,accel=kvm:tcg -smp 4,cores=8 -usb[...]

CORES=4 works.

Just wondering, is it possible to allocate more cores?

You could try -smp 16,cores=16,threads=1,sockets=1 and it means the vm will use 16 phsical CPU cores, 16 logic cores. I managed to run macOS vm with the paramter above. I also tried -smp 32,cores=16,threads=2,sockets=1 but macOS stuck after running several hours and cannot recover by itself. I guess qemu/clover may not be able to work well with the threads parameter greater than 1.

@iedwin commented on GitHub (Nov 23, 2020): > Starting with: > > ``` > docker run --device /dev/kvm --device /dev/snd -e CORES=8 -e RAM=10 -p 8888:5999 -p 50922:10022 -d --privileged docker-osx-vnc:latest > ``` > > Does not start the VM. QEMU args (truncated): > > ``` > qemu-system-x86_64 -m 10000 -cpu Penryn,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check -machine q35,accel=kvm:tcg -smp 4,cores=8 -usb[...] > ``` > > `CORES=4` works. > > Just wondering, is it possible to allocate more cores? You could try -smp 16,cores=16,threads=1,sockets=1 and it means the vm will use 16 phsical CPU cores, 16 logic cores. I managed to run macOS vm with the paramter above. I also tried -smp 32,cores=16,threads=2,sockets=1 but macOS stuck after running several hours and cannot recover by itself. I guess qemu/clover may not be able to work well with the threads parameter greater than 1.

adam commented 2025-12-29 05:21:29 +01:00

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@jpmorrison commented on GitHub (Oct 15, 2021):

I ran Passmark (cli) benchmark on the Linux host and the macos guest and saw big improvements with SMP/threads.

After I set SMP=8 and threads=2, with default CORES=4 Passmark reported twice the guest performance. I don't know if threads is needed or if qemu can figure that out automatically from SMP.

Host cpu is pretty high still pretty high (10%) even when the guest is idle:
Load Avg: 0.36, 0.49, 0.53 CPU usage: 0.23% user, 0.59% sys, 99.16% idle SharedLibs: 448M resident, 76M data, 59M linkedit.

This has been pretty consistent no matter how many CPUs the guest has.

@jpmorrison commented on GitHub (Oct 15, 2021): I ran Passmark (cli) benchmark on the Linux host and the macos guest and saw big improvements with SMP/threads. After I set SMP=8 and threads=2, with default CORES=4 Passmark reported twice the guest performance. I don't know if threads is needed or if qemu can figure that out automatically from SMP. Host cpu is pretty high still pretty high (10%) even when the guest is idle: ` Load Avg: 0.36, 0.49, 0.53 CPU usage: 0.23% user, 0.59% sys, 99.16% idle SharedLibs: 448M resident, 76M data, 59M linkedit. ` This has been pretty consistent no matter how many CPUs the guest has.

adam commented 2025-12-29 05:21:29 +01:00

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@sickcodes commented on GitHub (Oct 18, 2021):

Thanks for the tip @jpmorrison, do you want to add your findings to the CPU in the README or create a more detailed bit? I'd be happy to later this week, unless you would like to add some notes :)

@sickcodes commented on GitHub (Oct 18, 2021): Thanks for the tip @jpmorrison, do you want to add your findings to the CPU in the README or create a more detailed bit? I'd be happy to later this week, unless you would like to add some notes :)

adam commented 2025-12-29 05:21:30 +01:00

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@jpmorrison commented on GitHub (Oct 19, 2021):

Here's my Launch.sh (as-is). I've learned a lot from @sickcodes quickemu and various qemu/kvm pages.

CPU

• threads: need to have threads=SMP/CORES. I've hard coded for now. Qemu won't start if the math doesn't add up.
• Passmark has cli based linux and macos benchmarks that are useful for checking performance. SMP=8 CORE=4,threads=2 is definitely better than 4/4/1. Maybe 8/8/1 is better/worse/no difference.
• OpenSSL can test aes crypto acceleration. Passmark tests SSE already - need other benchmarks that work on both host/guest.
• Initially I suspected performance issues with Qemu/KVM but I think I have ruled that out. If you need maximum performance then pass all the cores/threads and Passmark will reflect that.
• I'm using CPU=kvm64 but quickemu uses host. Worth trying host especially if you have a new CPU. Mine's old and still boots Catalina.

VirtIO

• Don't bother with virtio with CoreBoot. I'm just testing it. It works but forgets to boot off of MacHDD.
• qxl: video glitches at boot but you can change resolution in guest System Preferences.
• I was using -vga virtio before - might work better for some. I don't think it supports System Preferences. Toss up performance wise.
• virtio mouse/keyboard: not sure if this adds anything
• virtioserial is used for Spice vdagent, webdav, USB redirection and Qemu guest agent.
• usb-ehci is needed for Catalina USB redirection from Spice remote-viewer. Newer can use qemu-xhci.
• virtio-net-pci works in Big Sur according to quickemu. The kext loads in Catalina but doesn't work properly. Might work as a second nic though.

Guest

• Inside the guest run sudo mount_9p NFS for the public file sharing. Host side permissions should be 777. This works and seems faster than using a network share mounted from the guest. Need to see if this can be automated through the qemu guest agent.
• vdagent: is used for spice file sharing/clipboard. The chardev setup is for spice, @kraxel's blog says qemu has its own vdagent now which could be useful for vnc/X11 clipboard.
• Unfortunately there's no MacOS spice-vdagent - yet. I'm trying to compile the linux version with macports/gtk but there's a bunch of linuxisms including alsa. I'll create a repository when it's further along.
• cat /dev/tty.com.redhat.spice.0 in the guest sets seamless mouse in spice remote-viewer and echoes mouse movement. Interesting but currently useless until vdagent is ported.
• /dev/tty.org.spice-space.webdav.0 spice file sharing with freedesktop phodav - need to look at porting. mount_webdav is already in Catalina
• Qemu guest agent: I exposed this because guestagent.log was filling up with errors from AppleQEMUGuestAgent. I didn't do anything in Catalina to start this so maybe passing +hypervisor or CPU=kvm64 triggers this.
• AppleQEMUGuestAgent has apple-guest-set-remote-login apple-working-directory apple-stdin and other stuff I assume are Apple extensions. AppleVirtIOConsole IOSerialBSDClient makes me wonder about connecting another virtioserial for console. Useful for kernel debugging?
• Qemu guest agent can send commands to the guest but I don't know how to use it. It would be nice to expose more functions and virt-manager features so you can hotplug devices etc. The chardev setup is probably out of date for this version of qemu, Qemu docs mention a different way to setup the host side. Unclear/conflicting docs here unfortunately.

# errors and launchd complaints stopped exposing /dev/tty.org.qemu.guest_agent.0
tail /var/log/guestagent.log
Mon Oct 18 04:10:05 2021 AppleQEMUGuestAgent 1.3-AppleVirtIO-16.140.6~70 (JazzSecuritySky tools)
Mon Oct 18 04:10:05 2021 Error opening serial port: '/dev/tty.org.qemu.guest_agent.0' (No such file or directory)
Mon Oct 18 04:10:06 2021 AppleQEMUGuestAgent 1.3-AppleVirtIO-16.140.6~70 (JazzSecuritySky tools)

ps -ef | grep -i qemu
    0   252     1   0 Mon04AM ??         0:00.01 /usr/libexec/AppleQEMUGuestAgent

USB redirection (Spice)

• So far only works (for me) with usb flash drives and Android adb shell
• iPhone/iPod/Android pass through to Catalina but don't show up in Finder. Need to make sense of Catalina error logs.
• Qemu issues too? Need to look into these messages: qemu-system-x86_64: usb-redir error:
• Windows remote-viewer: needs usb support installed separately. Some devices won't redirect 'rejected by host' and might need additional setup. I think some devices are blacklisted so you don't lock yourself out redirecting your keyboard!
• Linux: can't redirect a device already in use. You may have to blacklist modules or shutdown services like usbmuxd. Check permissions.
• Some devices don't redirect on USB3 ports. Try a USB2 port, at least with Catalina/USB2

Launch.sh

#!/bin/bash
set -eux
sudo chown    $(id -u):$(id -g) /dev/kvm 2>/dev/null || true
sudo chown -R $(id -u):$(id -g) /dev/snd 2>/dev/null || true
RAM=half

EXTRA="-nographic -spice disable-ticketing,port=3001,disable-copy-paste=off,disable-agent-file-xfer=off -enable-kvm"
CPU=kvm64
SMP=8

# CPUID flags: these might not be needed with CPU=host used by quickemu, Haven't tested.
# Qemu recommends +pdpe1gb,+pcid
# Kholia recommends +vmx,+rdtscp
# Forgot who suggested +hypervisor  - it might be what enables /usr/libexec/AppleQEMUGuestAgent 
# Other flags don't seem to help if they work, and qemu ignores others. 
CPUID_FLAGS="vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,+hypervisor,+pcid,+pdpe1gb,+pclmulqdq,+vmx,+rdtscp,+tsc-deadline,+ss,+ds-cpl,+dtes64,+pdcm,+xtpr,+vmx-unrestricted-guest,+vmx-vintr-pending,check"

# Share a directory to the guest
# security_model=none for NFS and root_squash otherwise the guest can't create files
# security_model=mapped-xattr can be used with local filesystem
#PUBLIC=/test
PUBLIC=/mnt
PUBLIC_TAG="NFS"
sudo mount -t nfs 172.17.0.1:/exports/vm /mnt

AUDIO_DRIVER="spice"
# Virtio-net has too many issues in Catalina 
#NETWORKING=virtio-net-pci
[[ "${RAM}" = max ]] && export RAM="$(("$(head -n1 /proc/meminfo | tr -dc "[:digit:]") / 1000000"))"
[[ "${RAM}" = half ]] && export RAM="$(("$(head -n1 /proc/meminfo | tr -dc "[:digit:]") / 2000000"))"
sudo chown -R $(id -u):$(id -g) /dev/snd 2>/dev/null || true
exec qemu-system-x86_64 -m ${RAM:-2}000 \
-cpu ${CPU:-Penryn},${CPUID_FLAGS:-vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,+hypervisor,+pcid,+pdpe1gb,+pclmulqdq,check,}${BOOT_ARGS} \
-machine q35,${KVM-"accel=kvm:tcg"} \
-smp ${CPU_STRING:-${SMP:-4},cores=${CORES:-4},threads=2} \
-usb -device usb-kbd -device usb-mouse \
-device isa-applesmc,osk=ourhardworkbythesewordsguardedpleasedontsteal\(c\)AppleComputerInc \
-drive if=pflash,format=raw,readonly=on,file=/home/arch/OSX-KVM/OVMF_CODE.fd \
-drive if=pflash,format=raw,file=/home/arch/OSX-KVM/OVMF_VARS-1024x768.fd \
-smbios type=2 \
-audiodev ${AUDIO_DRIVER:-alsa},id=hda -device ich9-intel-hda -device hda-duplex,audiodev=hda \
-drive id=OpenCoreBoot,if=virtio,snapshot=on,format=qcow2,file=${BOOTDISK:-/home/arch/OSX-KVM/OpenCore-Catalina/OpenCore.qcow2} \
-drive id=InstallMedia,if=virtio,file=/home/arch/OSX-KVM/BaseSystem.img,format=qcow2 \
-drive id=MacHDD,if=virtio,file=${IMAGE_PATH:-/home/arch/OSX-KVM/mac_hdd_ng.img},format=${IMAGE_FORMAT:-qcow2} \
-netdev user,id=net0,hostfwd=tcp::${INTERNAL_SSH_PORT:-10022}-:22,hostfwd=tcp::${SCREEN_SHARE_PORT:-5900}-:5900,${ADDITIONAL_PORTS} \
-device ${NETWORKING:-vmxnet3},netdev=net0,id=net0,mac=${MAC_ADDRESS:-52:54:00:09:49:17} \
-device virtio-serial-pci \
-chardev spicevmc,id=vdagent0,name=vdagent \
-device virtserialport,chardev=vdagent0,name=com.redhat.spice.0 \
-device virtio-mouse \
-device virtio-keyboard \
-monitor stdio \
-boot menu=on \
-device qxl \
-serial none \
-fsdev local,id=fsdev0,path=${PUBLIC},security_model=none -device virtio-9p-pci,fsdev=fsdev0,mount_tag=${PUBLIC_TAG} \
-device usb-ehci,id=spicepass \
-chardev spicevmc,id=usbredirchardev1,name=usbredir \
-device usb-redir,chardev=usbredirchardev1,id=usbredirdev1 \
-chardev spicevmc,id=usbredirchardev2,name=usbredir \
-device usb-redir,chardev=usbredirchardev2,id=usbredirdev2 \
-chardev spicevmc,id=usbredirchardev3,name=usbredir \
-device usb-redir,chardev=usbredirchardev3,id=usbredirdev3 \
-chardev spiceport,id=webdav0,name=org.spice-space.webdav.0 \
-device virtserialport,chardev=webdav0,name=org.spice-space.webdav.0 \
-chardev socket,path=/tmp/qga.sock,server,nowait,id=qga0 \
-device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 \
${EXTRA:-}
(END)

@jpmorrison commented on GitHub (Oct 19, 2021): Here's my Launch.sh (as-is). I've learned a lot from @sickcodes quickemu and various qemu/kvm pages. # CPU - threads: need to have threads=SMP/CORES. I've hard coded for now. Qemu won't start if the math doesn't add up. - Passmark has cli based linux and macos benchmarks that are useful for checking performance. SMP=8 CORE=4,threads=2 is definitely better than 4/4/1. Maybe 8/8/1 is better/worse/no difference. - OpenSSL can test aes crypto acceleration. Passmark tests SSE already - need other benchmarks that work on both host/guest. - Initially I suspected performance issues with Qemu/KVM but I think I have ruled that out. If you need maximum performance then pass all the cores/threads and Passmark will reflect that. - I'm using CPU=kvm64 but quickemu uses host. Worth trying host especially if you have a new CPU. Mine's old and still boots Catalina. # VirtIO - Don't bother with virtio with CoreBoot. I'm just testing it. It works but forgets to boot off of MacHDD. - qxl: video glitches at boot but you can change resolution in guest System Preferences. - I was using -vga virtio before - might work better for some. I don't think it supports System Preferences. Toss up performance wise. - virtio mouse/keyboard: not sure if this adds anything - virtioserial is used for Spice vdagent, webdav, USB redirection and Qemu guest agent. - usb-ehci is needed for Catalina USB redirection from Spice remote-viewer. Newer can use qemu-xhci. - virtio-net-pci works in Big Sur according to quickemu. The kext loads in Catalina but doesn't work properly. Might work as a second nic though. # Guest - Inside the guest run `sudo mount_9p NFS` for the public file sharing. Host side permissions should be 777. This works and seems faster than using a network share mounted from the guest. Need to see if this can be automated through the qemu guest agent. - vdagent: is used for spice file sharing/clipboard. The chardev setup is for spice, @kraxel's blog says qemu has its own vdagent now which could be useful for vnc/X11 clipboard. - Unfortunately there's no MacOS spice-vdagent - yet. I'm trying to compile the linux version with macports/gtk but there's a bunch of linuxisms including alsa. I'll create a repository when it's further along. - `cat /dev/tty.com.redhat.spice.0` in the guest sets seamless mouse in spice remote-viewer and echoes mouse movement. Interesting but currently useless until vdagent is ported. - `/dev/tty.org.spice-space.webdav.0` spice file sharing with freedesktop phodav - need to look at porting. `mount_webdav` is already in Catalina - Qemu guest agent: I exposed this because guestagent.log was filling up with errors from AppleQEMUGuestAgent. I didn't do anything in Catalina to start this so maybe passing +hypervisor or CPU=kvm64 triggers this. - AppleQEMUGuestAgent has `apple-guest-set-remote-login apple-working-directory apple-stdin` and other stuff I assume are Apple extensions. `AppleVirtIOConsole IOSerialBSDClient` makes me wonder about connecting another virtioserial for console. Useful for kernel debugging? - Qemu guest agent can send commands to the guest but I don't know how to use it. It would be nice to expose more functions and virt-manager features so you can hotplug devices etc. The chardev setup is probably out of date for this version of qemu, Qemu docs mention a different way to setup the host side. Unclear/conflicting docs here unfortunately. ``` # errors and launchd complaints stopped exposing /dev/tty.org.qemu.guest_agent.0 tail /var/log/guestagent.log Mon Oct 18 04:10:05 2021 AppleQEMUGuestAgent 1.3-AppleVirtIO-16.140.6~70 (JazzSecuritySky tools) Mon Oct 18 04:10:05 2021 Error opening serial port: '/dev/tty.org.qemu.guest_agent.0' (No such file or directory) Mon Oct 18 04:10:06 2021 AppleQEMUGuestAgent 1.3-AppleVirtIO-16.140.6~70 (JazzSecuritySky tools) ps -ef | grep -i qemu 0 252 1 0 Mon04AM ?? 0:00.01 /usr/libexec/AppleQEMUGuestAgent ``` # USB redirection (Spice) - So far only works (for me) with usb flash drives and Android `adb shell` - iPhone/iPod/Android pass through to Catalina but don't show up in Finder. Need to make sense of Catalina error logs. - Qemu issues too? Need to look into these messages: `qemu-system-x86_64: usb-redir error:` - Windows remote-viewer: needs usb support installed separately. Some devices won't redirect 'rejected by host' and might need additional setup. I think some devices are blacklisted so you don't lock yourself out redirecting your keyboard! - Linux: can't redirect a device already in use. You may have to blacklist modules or shutdown services like usbmuxd. Check permissions. - Some devices don't redirect on USB3 ports. Try a USB2 port, at least with Catalina/USB2 # Launch.sh ``` #!/bin/bash set -eux sudo chown $(id -u):$(id -g) /dev/kvm 2>/dev/null || true sudo chown -R $(id -u):$(id -g) /dev/snd 2>/dev/null || true RAM=half EXTRA="-nographic -spice disable-ticketing,port=3001,disable-copy-paste=off,disable-agent-file-xfer=off -enable-kvm" CPU=kvm64 SMP=8 # CPUID flags: these might not be needed with CPU=host used by quickemu, Haven't tested. # Qemu recommends +pdpe1gb,+pcid # Kholia recommends +vmx,+rdtscp # Forgot who suggested +hypervisor - it might be what enables /usr/libexec/AppleQEMUGuestAgent # Other flags don't seem to help if they work, and qemu ignores others. CPUID_FLAGS="vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,+hypervisor,+pcid,+pdpe1gb,+pclmulqdq,+vmx,+rdtscp,+tsc-deadline,+ss,+ds-cpl,+dtes64,+pdcm,+xtpr,+vmx-unrestricted-guest,+vmx-vintr-pending,check" # Share a directory to the guest # security_model=none for NFS and root_squash otherwise the guest can't create files # security_model=mapped-xattr can be used with local filesystem #PUBLIC=/test PUBLIC=/mnt PUBLIC_TAG="NFS" sudo mount -t nfs 172.17.0.1:/exports/vm /mnt AUDIO_DRIVER="spice" # Virtio-net has too many issues in Catalina #NETWORKING=virtio-net-pci [[ "${RAM}" = max ]] && export RAM="$(("$(head -n1 /proc/meminfo | tr -dc "[:digit:]") / 1000000"))" [[ "${RAM}" = half ]] && export RAM="$(("$(head -n1 /proc/meminfo | tr -dc "[:digit:]") / 2000000"))" sudo chown -R $(id -u):$(id -g) /dev/snd 2>/dev/null || true exec qemu-system-x86_64 -m ${RAM:-2}000 \ -cpu ${CPU:-Penryn},${CPUID_FLAGS:-vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,+hypervisor,+pcid,+pdpe1gb,+pclmulqdq,check,}${BOOT_ARGS} \ -machine q35,${KVM-"accel=kvm:tcg"} \ -smp ${CPU_STRING:-${SMP:-4},cores=${CORES:-4},threads=2} \ -usb -device usb-kbd -device usb-mouse \ -device isa-applesmc,osk=ourhardworkbythesewordsguardedpleasedontsteal\(c\)AppleComputerInc \ -drive if=pflash,format=raw,readonly=on,file=/home/arch/OSX-KVM/OVMF_CODE.fd \ -drive if=pflash,format=raw,file=/home/arch/OSX-KVM/OVMF_VARS-1024x768.fd \ -smbios type=2 \ -audiodev ${AUDIO_DRIVER:-alsa},id=hda -device ich9-intel-hda -device hda-duplex,audiodev=hda \ -drive id=OpenCoreBoot,if=virtio,snapshot=on,format=qcow2,file=${BOOTDISK:-/home/arch/OSX-KVM/OpenCore-Catalina/OpenCore.qcow2} \ -drive id=InstallMedia,if=virtio,file=/home/arch/OSX-KVM/BaseSystem.img,format=qcow2 \ -drive id=MacHDD,if=virtio,file=${IMAGE_PATH:-/home/arch/OSX-KVM/mac_hdd_ng.img},format=${IMAGE_FORMAT:-qcow2} \ -netdev user,id=net0,hostfwd=tcp::${INTERNAL_SSH_PORT:-10022}-:22,hostfwd=tcp::${SCREEN_SHARE_PORT:-5900}-:5900,${ADDITIONAL_PORTS} \ -device ${NETWORKING:-vmxnet3},netdev=net0,id=net0,mac=${MAC_ADDRESS:-52:54:00:09:49:17} \ -device virtio-serial-pci \ -chardev spicevmc,id=vdagent0,name=vdagent \ -device virtserialport,chardev=vdagent0,name=com.redhat.spice.0 \ -device virtio-mouse \ -device virtio-keyboard \ -monitor stdio \ -boot menu=on \ -device qxl \ -serial none \ -fsdev local,id=fsdev0,path=${PUBLIC},security_model=none -device virtio-9p-pci,fsdev=fsdev0,mount_tag=${PUBLIC_TAG} \ -device usb-ehci,id=spicepass \ -chardev spicevmc,id=usbredirchardev1,name=usbredir \ -device usb-redir,chardev=usbredirchardev1,id=usbredirdev1 \ -chardev spicevmc,id=usbredirchardev2,name=usbredir \ -device usb-redir,chardev=usbredirchardev2,id=usbredirdev2 \ -chardev spicevmc,id=usbredirchardev3,name=usbredir \ -device usb-redir,chardev=usbredirchardev3,id=usbredirdev3 \ -chardev spiceport,id=webdav0,name=org.spice-space.webdav.0 \ -device virtserialport,chardev=webdav0,name=org.spice-space.webdav.0 \ -chardev socket,path=/tmp/qga.sock,server,nowait,id=qga0 \ -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 \ ${EXTRA:-} (END) ```

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Reference: starred/Docker-OSX-sickcodes#70