[PATCH] KVM: SVM: drop MSR_IA32_PERF_CAPABILITIES from emulated MSRs

From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	Like Xu <like.xu@linux.intel.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH] KVM: SVM: drop MSR_IA32_PERF_CAPABILITIES from emulated MSRs
Date: Tue, 16 Jun 2020 18:14:27 +0200	[thread overview]
Message-ID: <20200616161427.375651-1-vkuznets@redhat.com> (raw)

state_test/smm_test selftests are failing on AMD with:
"Unexpected result from KVM_GET_MSRS, r: 51 (failed MSR was 0x345)"

MSR_IA32_PERF_CAPABILITIES is an emulated MSR indeed but only on Intel,
make svm_has_emulated_msr() skip it so it is not returned by
KVM_GET_MSR_INDEX_LIST.

Fixes: 27461da31089 ("KVM: x86/pmu: Support full width counting")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 arch/x86/kvm/svm/svm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 8ccfa4197d9c..2c423d64fb8f 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3539,6 +3539,8 @@ static bool svm_has_emulated_msr(u32 index)
 	case MSR_IA32_MCG_EXT_CTL:
 	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
 		return false;
+	case MSR_IA32_PERF_CAPABILITIES:
+		return false;
 	default:
 		break;
 	}
-- 
2.25.4

