Unverified Commit 24f9798c authored by Kroese's avatar Kroese Committed by GitHub
Browse files

feat: Restrict AMD CPU's to a single core

parent f15a2d6a

src/boot.sh

+8 −3
Original line number Diff line number Diff line
@@ -156,7 +156,7 @@ 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 +167,11 @@ else 
  CPU_FLAGS="$DEFAULT_FLAGS,$CPU_FLAGS"

fi



if [[ "$CPU_VENDOR" == "AuthenticAMD" ]] && [[ "${KVM:-}" != [Nn]* ]] && [[ "${CPU_CORES,,}" != "1" ]]; then

  warn "Restricted processor to a single core (instead of $CPU_CORES) because an AMD CPU was detected!"

  CPU_CORES="1"

fi



SM_BIOS=""

CLOCKSOURCE="tsc"

[[ "${ARCH,,}" == "arm64" ]] && CLOCKSOURCE="arch_sys_counter"
@@ -180,8 +185,8 @@ else 
  case "${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" ]]; then

        warn "Restricted processor to a single core (instead of $CPU_CORES) because nested KVM virtualization on an AMD CPU was detected!"        

        CPU_CORES="1"

      else

        warn "Nested KVM virtualization detected, this might cause issues running macOS!"