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feat: Detect nested virtualization #94

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merged 1 commit into from
Oct 12, 2024
Merged

feat: Detect nested virtualization #94

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16 changes: 16 additions & 0 deletions src/boot.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,22 @@ else
CPU_FLAGS="$DEFAULT_FLAGS,$CPU_FLAGS"
fi

CLOCK="/sys/devices/system/clocksource/clocksource0/current_clocksource"
[ -f "$CLOCK" ] && CLOCK=$(<"$CLOCK")

if [[ "${CLOCK,,}" == "kvm-clock" ]]; then
if [[ "$CPU_VENDOR" != "GenuineIntel" ]] && [[ "${CPU_CORES,,}" == "2" ]]; then
warn "Restricted processor to a single core because nested virtualization was detected!"
CPU_CORES="1"
else
warn "Nested virtualization was detected, this might cause issues running macOS!"
fi
fi

if [[ "${CLOCK,,}" == "hpet" ]]; then
warn "Your clocksource is HPET instead of TSC, this will cause issues running macOS!"
fi

case "$CPU_CORES" in
"" | "0" | "3" ) CPU_CORES="2" ;;
"5" ) CPU_CORES="4" ;;
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