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_cpuid(struct kvm_cpuid2 *cpuid,
  10                             struct kvm_cpuid_entry2 __user *entries,
  11                             unsigned int type);
  12 int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
  13                              struct kvm_cpuid *cpuid,
  14                              struct kvm_cpuid_entry __user *entries);
  15 int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
  16                               struct kvm_cpuid2 *cpuid,
  17                               struct kvm_cpuid_entry2 __user *entries);
  18 int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
  19                               struct kvm_cpuid2 *cpuid,
  20                               struct kvm_cpuid_entry2 __user *entries);
  21 void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
  22
  23
  24 static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
  25 {
  26         struct kvm_cpuid_entry2 *best;
  27
  28         if (!static_cpu_has(X86_FEATURE_XSAVE))
  29                 return 0;
  30
  31         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  32         return best && (best->ecx & bit(X86_FEATURE_XSAVE));
  33 }
  34
  35 static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
  36 {
  37         struct kvm_cpuid_entry2 *best;
  38
  39         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  40         return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
  41 }
  42
  43 static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
  44 {
  45         struct kvm_cpuid_entry2 *best;
  46
  47         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  48         return best && (best->ebx & bit(X86_FEATURE_SMEP));
  49 }
  50
  51 static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
  52 {
  53         struct kvm_cpuid_entry2 *best;
  54
  55         best = kvm_find_cpuid_entry(vcpu, 7, 0);
  56         return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
  57 }
  58
  59 static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
  60 {
  61         struct kvm_cpuid_entry2 *best;
  62
  63         best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
  64         return best && (best->ecx & bit(X86_FEATURE_OSVW));
  65 }
  66
  67 static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
  68 {
  69         struct kvm_cpuid_entry2 *best;
  70
  71         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  72         return best && (best->ecx & bit(X86_FEATURE_PCID));
  73 }
  74
  75 static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
  76 {
  77         struct kvm_cpuid_entry2 *best;
  78
  79         best = kvm_find_cpuid_entry(vcpu, 1, 0);
  80         return best && (best->ecx & bit(X86_FEATURE_X2APIC));
  81 }
  82
  83 #endif