diff options
| author | Babu Moger <babu.moger@amd.com> | 2020-05-13 01:59:16 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-04 18:35:06 +0200 |
| commit | fa44b82eb8318facc56356afa897f3f3105172e1 (patch) | |
| tree | 478daae0cddf865827db76dffc505d87ddc6a63f /arch/x86/kvm/cpuid.c | |
| parent | KVM: x86: Assign correct value to array.maxnent (diff) | |
| download | linux-fa44b82eb8318facc56356afa897f3f3105172e1.tar.xz linux-fa44b82eb8318facc56356afa897f3f3105172e1.zip | |
KVM: x86: Move MPK feature detection to common code
Both Intel and AMD support (MPK) Memory Protection Key feature.
Move the feature detection from VMX to the common code. It should
work for both the platforms now.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <158932795627.44260.15144185478040178638.stgit@naples-babu.amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 3d88ddf781d0..9ca32d969938 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -325,7 +325,7 @@ void kvm_set_cpu_caps(void) ); kvm_cpu_cap_mask(CPUID_7_ECX, - F(AVX512VBMI) | F(LA57) | 0 /*PKU*/ | 0 /*OSPKE*/ | F(RDPID) | + F(AVX512VBMI) | F(LA57) | F(PKU) | 0 /*OSPKE*/ | F(RDPID) | F(AVX512_VPOPCNTDQ) | F(UMIP) | F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) | F(AVX512_VNNI) | F(AVX512_BITALG) | F(CLDEMOTE) | F(MOVDIRI) | F(MOVDIR64B) | 0 /*WAITPKG*/ @@ -334,6 +334,13 @@ void kvm_set_cpu_caps(void) if (cpuid_ecx(7) & F(LA57)) kvm_cpu_cap_set(X86_FEATURE_LA57); + /* + * PKU not yet implemented for shadow paging and requires OSPKE + * to be set on the host. Clear it if that is not the case + */ + if (!tdp_enabled || !boot_cpu_has(X86_FEATURE_OSPKE)) + kvm_cpu_cap_clear(X86_FEATURE_PKU); + kvm_cpu_cap_mask(CPUID_7_EDX, F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) | |