start-macos-vm.sh

#!/bin/bash

set -e

[[ "$EUID" -ne 0 ]] && echo "Please run with sudo" && exit 1

[[ ! -f config ]] && echo "config does not exist" && exit 1

source config

QEMU_PARAMS="-machine q35 \
    -cpu Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+aes,+xsave,+avx,+xsaveopt,+avx2,+smep,+pcid,+ssse3,+sse4.2,+popcnt,check \
    -enable-kvm \
    -smp $CORES,sockets=1,cores=$CORES,threads=1 \
    -m ${MEMORY}G \
    -mem-path /dev/hugepages \
    -mem-prealloc \
    -device isa-applesmc,osk=ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc \
    -drive if=pflash,format=raw,readonly,file=ovmf/OVMF_CODE-pure-efi.fd \
    -drive if=pflash,format=raw,file=ovmf/OVMF_VARS-pure-efi-1024x768.fd \
    -smbios type=2 \
    -device ich9-ahci,id=sata \
    -device ide-hd,bus=sata.1,drive=disk1 \
    -drive id=disk1,if=none,snapshot=on,format=qcow2,file=boot/clover.qcow2 \
    -nic user,model=vmxnet3,smb=$SHARE \
    -usb -device usb-kbd -device usb-mouse \
    -rtc base=localtime,clock=host"


# drives
n=2
for path in $DRIVES; do
    QEMU_PARAMS="$QEMU_PARAMS \
        -device ide-hd,bus=sata.$n,drive=disk$n \
        -drive id=disk$n,if=none,cache=none,format=raw,aio=native,file=$path"

    n=$((n+1))
done


# inputs
n=1
for path in $INPUTS; do
    QEMU_PARAMS="$QEMU_PARAMS \
        -object input-linux,id=id$n,evdev=$path"

    n=$((n+1))
done


# vga
enable_vga_passthrough() {
    VGA_PASSTHROUGH_ENABLED=true
    QEMU_PARAMS="$QEMU_PARAMS \
        -device vfio-pci,host=$VFIO_VIDEO,bus=pcie.0,multifunction=on$VGA_PASSTHROUGH_ADDITION \
        -device vfio-pci,host=$VFIO_AUDIO,bus=pcie.0 \
        -vga none \
        -nographic"
}

if [[ "$VGA" = "passthrough" ]]; then
    # vga passtrough while having another gpu on the host
    enable_vga_passthrough

elif [[ "$VGA" = "passthrough-single" ]]; then
    # vga passthrough with single gpu

    [[ ! -f VBIOS.rom ]] && echo "VBIOS.rom does not exist" && exit 1

    VGA_PASSTHROUGH_SINGLE=true
    VGA_PASSTHROUGH_ADDITION=",x-vga=on,romfile=VBIOS.rom"
    enable_vga_passthrough

else
    # virtual vga device
    QEMU_PARAMS="$QEMU_PARAMS \
        -vga qxl \
        -monitor stdio"

fi

echo $QEMU_PARAMS

# setup vga passthrough state
if [[ -v VGA_PASSTHROUGH_ENABLED ]]; then

    source vfio.sh

    if [[ -v VGA_PASSTHROUGH_SINGLE ]]; then
        console_framebuffer_unbind
    fi

    rmmod_nvidia || true
    vfio_bind "$VFIO_VIDEO $VFIO_AUDIO"
fi

# allocate needed amount of 2 MB hugepages
echo $(($MEMORY * 1024 / 2)) > /proc/sys/vm/nr_hugepages

# actual qemu invocation
$QEMU_BINARY $QEMU_PARAMS

# release allocated hugepages
echo 0 > /proc/sys/vm/nr_hugepages

# restore from vga passthrough state
if [[ -v VGA_PASSTHROUGH_ENABLED ]]; then
    vfio_unbind "$VFIO_VIDEO $VFIO_AUDIO"
    modprobe_nvidia

    if [[ -v VGA_PASSTHROUGH_SINGLE ]]; then
        console_framebuffer_bind
    fi
fi