arch/x86/kvm/cpuid.h

   1 #ifndef ARCH_X86_KVM_CPUID_H
   2 #define ARCH_X86_KVM_CPUID_H
   3
   4 #include "x86.h"
   5
   6 void kvm_update_cpuid(struct kvm_vcpu *vcpu);
   7 struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
   8                                               u32 function, u32 index);
   9 int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
  10                                       struct kvm_cpuid_entry2 __user *entries);
  11 int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
  12                              struct kvm_cpuid *cpuid,
  13                              struct kvm_cpuid_entry __user *entries);
  14 int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
  15                               struct kvm_cpuid2 *cpuid,
  16                               struct kvm_cpuid_entry2 __user *entries);
  17 int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
  18                               struct kvm_cpuid2 *cpuid,
  19                               struct kvm_cpuid_entry2 __user *entries);
  20
  21
  22 static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
  23 {
  24         struct kvm_cpuid_entry2 *best;
  25
  26         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  27         return best && (best->ecx & bit(X86_FEATURE_XSAVE));
  28 }
  29
  30 static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
  31 {
  32         struct kvm_cpuid_entry2 *best;
  33
  34         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  35         return best && (best->ebx & bit(X86_FEATURE_SMEP));
  36 }
  37
  38 static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
  39 {
  40         struct kvm_cpuid_entry2 *best;
  41
  42         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  43         return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
  44 }
  45
  46 static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
  47 {
  48         struct kvm_cpuid_entry2 *best;
  49
  50         best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
  51         return best && (best->ecx & bit(X86_FEATURE_OSVW));
  52 }
  53
  54 #endif