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| author | Radim Krčmář <rkrcmar@redhat.com> | 2017-08-05 01:12:50 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-08-07 17:16:30 +0300 |
| commit | 1b4d56b86a370a3785a33eba23e2e3009f5a03af (patch) | |
| tree | 5aa5f21a98a2127c47a54b17a3404cf277afeda6 /arch/x86/kvm/cpuid.h | |
| parent | d6321d493319bfd406c484e8359c6101cbda39d3 (diff) | |
| download | linux-1b4d56b86a370a3785a33eba23e2e3009f5a03af.tar.xz | |
KVM: x86: use general helpers for some cpuid manipulation
Add guest_cpuid_clear() and use it instead of kvm_find_cpuid_entry().
Also replace some uses of kvm_find_cpuid_entry() with guest_cpuid_has().
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index 4e9ac93b4f3a..ac15193e5e52 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -104,6 +104,15 @@ static __always_inline bool guest_cpuid_has(struct kvm_vcpu *vcpu, unsigned x86_ return *reg & bit(x86_feature); } +static __always_inline void guest_cpuid_clear(struct kvm_vcpu *vcpu, unsigned x86_feature) +{ + int *reg; + + reg = guest_cpuid_get_register(vcpu, x86_feature); + if (reg) + *reg &= ~bit(x86_feature); +} + static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu) { struct kvm_cpuid_entry2 *best; |