Commit e87555e5 authored Dec 19, 2018 by Vitaly Kuznetsov Committed by Paolo Bonzini Dec 21, 2018

KVM: x86: svm: report MSR_IA32_MCG_EXT_CTL as unsupported



AMD doesn't seem to implement MSR_IA32_MCG_EXT_CTL and svm code in kvm
knows nothing about it, however, this MSR is among emulated_msrs and
thus returned with KVM_GET_MSR_INDEX_LIST. The consequent KVM_GET_MSRS,
of course, fails.

Report the MSR as unsupported to not confuse userspace.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

parent ed8e4812

arch/x86/kvm/svm.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -5840,6 +5840,13 @@ static bool svm_cpu_has_accelerated_tpr(void)

		static bool svm_has_emulated_msr(int index)
		{
		switch (index) {
		case MSR_IA32_MCG_EXT_CTL:
		return false;
		default:
		break;
		}

		return true;
		}

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