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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 11:16:26 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 11:16:26 +0100 |
| commit | 6f01eb5bf8e8110ab5f3a8e7b0f3abf19a205e4b (patch) | |
| tree | 4b3147335ed97e4b487fd84bcb7a959a38d9656e /arch/x86/kvm/cpuid.h | |
| parent | 8f234193b8cc35c44614e4a4b05f2d920ff562e4 (diff) | |
| parent | 6b50202a4d53bf527c640467bcff68b50a5e38a2 (diff) | |
Merge tag 'v4.4.177' into toradex_vf_4.4-nextColibri-VF_LXDE-Image_2.8b6.183-20190331
This is the 4.4.177 stable release
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index d1534feefcfe..72f159f4d456 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -159,6 +159,46 @@ static inline bool guest_cpuid_has_rdtscp(struct kvm_vcpu *vcpu) return best && (best->edx & bit(X86_FEATURE_RDTSCP)); } +static inline bool guest_cpuid_has_ibpb(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid_entry2 *best; + + best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0); + if (best && (best->ebx & bit(X86_FEATURE_AMD_IBPB))) + return true; + best = kvm_find_cpuid_entry(vcpu, 7, 0); + return best && (best->edx & bit(X86_FEATURE_SPEC_CTRL)); +} + +static inline bool guest_cpuid_has_spec_ctrl(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid_entry2 *best; + + best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0); + if (best && (best->ebx & bit(X86_FEATURE_AMD_IBRS))) + return true; + best = kvm_find_cpuid_entry(vcpu, 7, 0); + return best && (best->edx & (bit(X86_FEATURE_SPEC_CTRL) | bit(X86_FEATURE_SPEC_CTRL_SSBD))); +} + +static inline bool guest_cpuid_has_arch_capabilities(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid_entry2 *best; + + best = kvm_find_cpuid_entry(vcpu, 7, 0); + return best && (best->edx & bit(X86_FEATURE_ARCH_CAPABILITIES)); +} + +static inline bool guest_cpuid_has_virt_ssbd(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid_entry2 *best; + + best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0); + return best && (best->ebx & bit(X86_FEATURE_VIRT_SSBD)); +} + + + /* * NRIPS is provided through cpuidfn 0x8000000a.edx bit 3 */ |