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fix(quickemu): conditionalise KVM-specific CPU flags for Windows #1805

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Merged
flexiondotorg merged 1 commit into from
Jan 24, 2026
Merged

fix(quickemu): conditionalise KVM-specific CPU flags for Windows #1805

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13 changes: 9 additions & 4 deletions quickemu
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Original file line number Diff line number Diff line change
Expand Up @@ -478,10 +478,15 @@ function configure_cpu() {
fi
;;
windows|windows-server)
if [ "${QEMU_VER_SHORT}" -gt 60 ]; then
CPU="-cpu ${CPU_MODEL},+hypervisor,+invtsc,l3-cache=on,migratable=no,hv_passthrough"
else
CPU="-cpu ${CPU_MODEL},+hypervisor,+invtsc,l3-cache=on,migratable=no,hv_frequencies${CPU_KVM_UNHALT},hv_reenlightenment,hv_relaxed,hv_spinlocks=8191,hv_stimer,hv_synic,hv_time,hv_vapic,hv_vendor_id=1234567890ab,hv_vpindex"
# Base CPU flags that work with all accelerators (KVM, HVF, TCG)
CPU="-cpu ${CPU_MODEL},+hypervisor,+invtsc,l3-cache=on"
# KVM-specific flags: migratable and Hyper-V enlightenments
if [ "${QEMU_ACCEL}" == "kvm" ]; then
if [ "${QEMU_VER_SHORT}" -gt 60 ]; then
CPU+=",migratable=no,hv_passthrough"
else
CPU+=",migratable=no,hv_frequencies${CPU_KVM_UNHALT},hv_reenlightenment,hv_relaxed,hv_spinlocks=8191,hv_stimer,hv_synic,hv_time,hv_vapic,hv_vendor_id=1234567890ab,hv_vpindex"
fi
fi
# Disable S3 support in the VM to ensure Windows can boot with SecureBoot enabled
# - https://wiki.archlinux.org/title/QEMU#VM_does_not_boot_when_using_a_Secure_Boot_enabled_OVMF
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