From 7b8050f570a03718d21fc8662c54586192ea2dac Mon Sep 17 00:00:00 2001 From: Nadav Har'El Date: Wed, 25 May 2011 23:16:10 +0300 Subject: [PATCH] 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 Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/vmx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index afc1f06907ce..a600fd7795f1 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -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); } /* -- 2.30.2