diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0063-KVM-X86-Extend-CPUID-range-to-include-new-leaf.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0063-KVM-X86-Extend-CPUID-range-to-include-new-leaf.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0063-KVM-X86-Extend-CPUID-range-to-include-new-leaf.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0063-KVM-X86-Extend-CPUID-range-to-include-new-leaf.patch new file mode 100644 index 00000000..88ac9265 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0063-KVM-X86-Extend-CPUID-range-to-include-new-leaf.patch @@ -0,0 +1,64 @@ +From b2bf70eb427d51d7126d7f7ce5354653dc1069a2 Mon Sep 17 00:00:00 2001 +From: Brijesh Singh <brijesh.singh@amd.com> +Date: Mon, 4 Dec 2017 10:57:25 -0600 +Subject: [PATCH 63/95] KVM: X86: Extend CPUID range to include new leaf +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +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> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + 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 d1f5c74..7d87dda 100644 +--- a/arch/x86/kvm/cpuid.c ++++ b/arch/x86/kvm/cpuid.c +@@ -613,7 +613,7 @@ 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 abc6cd8..69b5ce2 100644 +--- a/arch/x86/kvm/svm.c ++++ b/arch/x86/kvm/svm.c +@@ -5356,6 +5356,12 @@ 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); ++ + } + } + +-- +2.7.4 + |