Commit 7b8050f5 authored May 25, 2011 by Nadav Har'El Committed by Avi Kivity Jul 12, 2011

KVM: nVMX: Add VMX to list of supported cpuid features

If the "nested" module option is enabled, add the "VMX" CPU feature to the
list of CPU features KVM advertises with the KVM_GET_SUPPORTED_CPUID ioctl.

Qemu uses this ioctl, and intersects KVM's list with its own list of desired
cpu features (depending on the -cpu option given to qemu) to determine the
final list of features presented to the guest.

Signed-off-by: Nadav Har'El <nyh@il.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

parent 7991825b

arch/x86/kvm/vmx.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -6299,6 +6299,8 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)

		static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
		{
		if (func == 1 && nested)
		entry->ecx \|= bit(X86_FEATURE_VMX);
		}

		/*

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