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| author | Brijesh Singh | 2017-12-04 17:57:25 +0100 |
|---|---|---|
| committer | Brijesh Singh | 2017-12-04 17:57:25 +0100 |
| commit | 8765d75329a386dd7742f94a1ea5fdcdea8d93d0 (patch) | |
| tree | f0f2c9a7d56aeeecd2efba8f2ba70c842c51e92d /arch/x86/kvm/svm.c | |
| parent | KVM: SVM: Prepare to reserve asid for SEV guest (diff) | |
| download | kernel-qcow2-linux-8765d75329a386dd7742f94a1ea5fdcdea8d93d0.tar.gz kernel-qcow2-linux-8765d75329a386dd7742f94a1ea5fdcdea8d93d0.tar.xz kernel-qcow2-linux-8765d75329a386dd7742f94a1ea5fdcdea8d93d0.zip | |
KVM: X86: Extend CPUID range to include new leaf
This CPUID leaf provides the memory encryption support information on
AMD Platform. Its complete description is available in APM volume 2,
Section 15.34
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index e403cf1f6ba3..7e302a25bc45 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -5170,6 +5170,12 @@ 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); + } } |