From e183d17ac362655e5ef061760245b4402b9c04f8 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Tue, 15 Aug 2023 13:36:49 -0700 Subject: KVM: nSVM: Use KVM-governed feature framework to track "LBRv enabled" Track "LBR virtualization exposed to L1" via a governed feature flag instead of using a dedicated bit/flag in vcpu_svm. Note, checking KVM's capabilities instead of the "lbrv" param means that the code isn't strictly equivalent, as lbrv_enabled could have been set if nested=false where as that the governed feature cannot. But that's a glorified nop as the feature/flag is consumed only by paths that are gated by nSVM being enabled. Link: https://lore.kernel.org/r/20230815203653.519297-12-seanjc@google.com Signed-off-by: Sean Christopherson --- arch/x86/kvm/governed_features.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/kvm/governed_features.h') diff --git a/arch/x86/kvm/governed_features.h b/arch/x86/kvm/governed_features.h index f01a95fd0071..3a4c0e40e1e0 100644 --- a/arch/x86/kvm/governed_features.h +++ b/arch/x86/kvm/governed_features.h @@ -11,6 +11,7 @@ KVM_GOVERNED_X86_FEATURE(VMX) KVM_GOVERNED_X86_FEATURE(NRIPS) KVM_GOVERNED_X86_FEATURE(TSCRATEMSR) KVM_GOVERNED_X86_FEATURE(V_VMSAVE_VMLOAD) +KVM_GOVERNED_X86_FEATURE(LBRV) #undef KVM_GOVERNED_X86_FEATURE #undef KVM_GOVERNED_FEATURE -- cgit v1.2.3