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qemu: fallback to TCG when KVM is not available #4204

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merged 1 commit into from
Oct 16, 2025
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qemu: fallback to TCG when KVM is not available #4204

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5 changes: 5 additions & 0 deletions pkg/driver/qemu/qemu.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1124,8 +1124,13 @@ func Accel(arch limatype.Arch) string {
if limayaml.IsNativeArch(arch) {
switch runtime.GOOS {
case "darwin":
// TODO: return "tcg" if HVF is not available
return "hvf"
case "linux":
if _, err := os.Stat("/dev/kvm"); err != nil {
logrus.WithError(err).Warn("/dev/kvm is not available. Disabling KVM. Expect very poor performance.")
return "tcg"
}
return "kvm"
case "netbsd":
return "nvmm"
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