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feat: Restrict AMD CPU's to a single core (#297)

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Kroese 2025-09-15 22:09:51 +02:00 committed by GitHub
parent f15a2d6ae5
commit 7d85112d12
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GPG key ID: B5690EEEBB952194
1 changed files with 10 additions and 4 deletions
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14
src/boot.sh
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@ -2,8 +2,9 @@
set -Eeuo pipefail
# Docker environment variables
: "${BOOT_MODE:="macos"}" # Boot mode
: "${FORCE:="N"}" # Force cores
: "${SECURE:="off"}" # Secure boot
: "${BOOT_MODE:="macos"}" # Boot mode
BOOT_DESC=""
BOOT_OPTS=""
@ -156,7 +157,7 @@ DISK_OPTS+=" -drive file=$IMG,id=$BOOT_DRIVE_ID,format=raw,cache=unsafe,readonly
CPU_VENDOR=$(lscpu | awk '/Vendor ID/{print $3}')
DEFAULT_FLAGS="vendor=GenuineIntel,vmware-cpuid-freq=on,-pdpe1gb"
if [[ "$CPU_VENDOR" != "GenuineIntel" ]] || [[ "${KVM:-}" == [Nn]* ]]; then
if [[ "$CPU_VENDOR" == "AuthenticAMD" ]] || [[ "${KVM:-}" == [Nn]* ]]; then
[ -z "${CPU_MODEL:-}" ] && CPU_MODEL="Haswell-noTSX"
DEFAULT_FLAGS+=",+pcid,+ssse3,+sse4.2,+popcnt,+avx,+avx2,+aes,+fma,+bmi1,+bmi2,+smep,+xsave,+xsavec,+xsaveopt,+xgetbv1,+movbe,+rdrand,check"
fi
@ -167,6 +168,11 @@ else
CPU_FLAGS="$DEFAULT_FLAGS,$CPU_FLAGS"
fi
if [[ "$CPU_VENDOR" == "AuthenticAMD" ]] && [[ "${CPU_CORES,,}" != "1" ]] && [[ "${FORCE:-}" == [Nn]* ]] && [[ "${KVM:-}" != [Nn]* ]]; then
warn "Restricted processor to a single core (instead of $CPU_CORES cores) because an AMD CPU was detected! (Set FORCE=Y to disable this measure)"
CPU_CORES="1"
fi
SM_BIOS=""
CLOCKSOURCE="tsc"
[[ "${ARCH,,}" == "arm64" ]] && CLOCKSOURCE="arch_sys_counter"
@ -180,8 +186,8 @@ else
case "${result,,}" in
"${CLOCKSOURCE,,}" ) ;;
"kvm-clock" )
if [[ "$CPU_VENDOR" != "GenuineIntel" ]] && [[ "${CPU_CORES,,}" == "2" ]]; then
warn "Restricted processor to a single core because nested KVM virtualization was detected!"
if [[ "$CPU_VENDOR" == "AuthenticAMD" ]] && [[ "${CPU_CORES,,}" != "1" ]] && [[ "${FORCE:-}" == [Nn]* ]] && [[ "${KVM:-}" != [Nn]* ]]; then
warn "Restricted processor to a single core (instead of $CPU_CORES cores) because nested KVM virtualization on an AMD CPU was detected! (Set FORCE=Y to disable this measure)"
CPU_CORES="1"
else
warn "Nested KVM virtualization detected, this might cause issues running macOS!"