Commit cd283252 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR 



This lets userspace read the MSR_IA32_ARCH_CAPABILITIES and check that all
requested features are available on the host.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 786b71f5

arch/x86/kvm/x86.c

+3 −1
Original line number Diff line number Diff line
@@ -1092,6 +1092,7 @@ static u32 msr_based_features[] = { 


	MSR_F10H_DECFG,

	MSR_IA32_UCODE_REV,

	MSR_IA32_ARCH_CAPABILITIES,

};



static unsigned int num_msr_based_features;
@@ -1100,7 +1101,8 @@ static int kvm_get_msr_feature(struct kvm_msr_entry *msr) 
{

	switch (msr->index) {

	case MSR_IA32_UCODE_REV:

		rdmsrl(msr->index, msr->data);

	case MSR_IA32_ARCH_CAPABILITIES:

		rdmsrl_safe(msr->index, &msr->data);

		break;

	default:

		if (kvm_x86_ops->get_msr_feature(msr))