xref: /linux/arch/x86/kvm/cpuid.h (revision 26b0d14106954ae46d2f4f7eec3481828a210f7d)
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
55