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KVM: x86: Move MPK feature detection to common code

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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>
This commit is contained in:
Babu Moger 2020-05-12 18:59:16 -05:00 committed by Paolo Bonzini
parent 65b1891499
commit fa44b82eb8
2 changed files with 8 additions and 5 deletions
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9
arch/x86/kvm/cpuid.c
View File

@ -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) |

4
arch/x86/kvm/vmx/vmx.c
View File

@ -7282,10 +7282,6 @@ static __init void vmx_set_cpu_caps(void)
if (vmx_pt_mode_is_host_guest())
kvm_cpu_cap_check_and_set(X86_FEATURE_INTEL_PT);
/* PKU is not yet implemented for shadow paging. */
if (enable_ept && boot_cpu_has(X86_FEATURE_OSPKE))
kvm_cpu_cap_check_and_set(X86_FEATURE_PKU);
if (vmx_umip_emulated())
kvm_cpu_cap_set(X86_FEATURE_UMIP);