Merge pull request #16609 from arixmkii/whpx-docs

Documenting Hyper-V QEMU acceleration settings
containers · Nov 28, 2022 · 6c7b836 · 6c7b836
2 parents 935c8eb + fbbef79
commit 6c7b836
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pkg/machine/qemu/options_windows_amd64.go b/pkg/machine/qemu/options_windows_amd64.go
@@ -5,6 +5,10 @@ var (
 )
 
 func (v *MachineVM) addArchOptions() []string {
+	// "max" level is used, because "host" is not supported with "whpx" acceleration
+	// "vmx=off" disabled nested virtualization (not needed for podman)
+	// QEMU issue to track nested virtualization: https://gitlab.com/qemu-project/qemu/-/issues/628
+	// "monitor=off" needed to support hosts, which have mwait calls disabled in BIOS/UEFI
 	opts := []string{"-machine", "q35,accel=whpx:tcg", "-cpu", "max,vmx=off,monitor=off"}
 	return opts
 }