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 void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
  21
  22
  23 static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
  24 {
  25         struct kvm_cpuid_entry2 *best;
  26
  27         if (!static_cpu_has(X86_FEATURE_XSAVE))
  28                 return 0;
  29
  30         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  31         return best && (best->ecx & bit(X86_FEATURE_XSAVE));
  32 }
  33
  34 static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
  35 {
  36         struct kvm_cpuid_entry2 *best;
  37
  38         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  39         return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
  40 }
  41
  42 static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
  43 {
  44         struct kvm_cpuid_entry2 *best;
  45
  46         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  47         return best && (best->ebx & bit(X86_FEATURE_SMEP));
  48 }
  49
  50 static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
  51 {
  52         struct kvm_cpuid_entry2 *best;
  53
  54         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  55         return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
  56 }
  57
  58 static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
  59 {
  60         struct kvm_cpuid_entry2 *best;
  61
  62         best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
  63         return best && (best->ecx & bit(X86_FEATURE_OSVW));
  64 }
  65
  66 static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
  67 {
  68         struct kvm_cpuid_entry2 *best;
  69
  70         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  71         return best && (best->ecx & bit(X86_FEATURE_PCID));
  72 }
  73
  74 #endif