text: #ifndef ARCH_X86_KVM_CPUID_H
  #define ARCH_X86_KVM_CPUID_H
  
  #include "x86.h"
  
  void kvm_update_cpuid(struct kvm_vcpu *vcpu);
  struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
  					      u32 function, u32 index);
  int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
  				      struct kvm_cpuid_entry2 __user *entries);
  int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
  			     struct kvm_cpuid *cpuid,
  			     struct kvm_cpuid_entry __user *entries);
  int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
  			      struct kvm_cpuid2 *cpuid,
  			      struct kvm_cpuid_entry2 __user *entries);
  int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
  			      struct kvm_cpuid2 *cpuid,
  			      struct kvm_cpuid_entry2 __user *entries);
  void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
  
  
  static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	if (!static_cpu_has(X86_FEATURE_XSAVE))
  		return 0;
  
  	best = kvm_find_cpuid_entry(vcpu, 1, 0);
  	return best && (best->ecx & bit(X86_FEATURE_XSAVE));
  }
  
  static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	best = kvm_find_cpuid_entry(vcpu, 7, 0);
  	return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
  }
  
  static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	best = kvm_find_cpuid_entry(vcpu, 7, 0);
  	return best && (best->ebx & bit(X86_FEATURE_SMEP));
  }
  
  static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	best = kvm_find_cpuid_entry(vcpu, 7, 0);
  	return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
  }
  
  static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
  	return best && (best->ecx & bit(X86_FEATURE_OSVW));
  }
  
  static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
  {
  	struct kvm_cpuid_entry2 *best;
  
  	best = kvm_find_cpuid_entry(vcpu, 1, 0);
  	return best && (best->ecx & bit(X86_FEATURE_PCID));
  }
  
  #endif
  