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Tsirkin" , Paolo Bonzini , =?UTF-8?q?=5C=22Radim=20Kr=C4=8Dm=C3=A1=C5=99=5C=22?= , Tom Lendacky , Brijesh Singh Subject: [RFC Part2 PATCH v3 08/26] KVM: X86: Extend CPUID range to include new leaf Date: Mon, 24 Jul 2017 15:02:45 -0500 Message-Id: <20170724200303.12197-9-brijesh.singh@amd.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170724200303.12197-1-brijesh.singh@amd.com> References: <20170724200303.12197-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [165.204.78.1] X-ClientProxiedBy: DM3PR12CA0049.namprd12.prod.outlook.com (10.161.151.17) To BY2PR12MB0145.namprd12.prod.outlook.com (10.162.82.18) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 62d0d1fa-1436-41a7-70f7-08d4d2cf0ebc X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(48565401081)(300000503095)(300135400095)(201703131423075)(201703031133081)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095); 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The complete description for CPUID leaf is available in APM volume 2, Section 15.34 Signed-off-by: Brijesh Singh Reviewed-by: Borislav Petkov --- arch/x86/kvm/cpuid.c | 2 +- arch/x86/kvm/svm.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 59ca2ee..372e969 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -599,7 +599,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, entry->edx = 0; break; case 0x80000000: - entry->eax = min(entry->eax, 0x8000001a); + entry->eax = min(entry->eax, 0x8000001f); break; case 0x80000001: entry->edx &= kvm_cpuid_8000_0001_edx_x86_features; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 1cd7c78..256c9df 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -5131,6 +5131,12 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) entry->edx |= SVM_FEATURE_NPT; break; + case 0x8000001F: + /* Support memory encryption cpuid if host supports it */ + if (boot_cpu_has(X86_FEATURE_SEV)) + cpuid(0x8000001f, &entry->eax, &entry->ebx, + &entry->ecx, &entry->edx); + } }