Avoid beyond bounds copy while caching ACL
[zen-stable.git] / arch / x86 / kvm / cpuid.h
blob5b97e1797a6d1411116445fc5775aa2bc826933b
1 #ifndef ARCH_X86_KVM_CPUID_H
2 #define ARCH_X86_KVM_CPUID_H
4 #include "x86.h"
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);
22 static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
24 struct kvm_cpuid_entry2 *best;
26 best = kvm_find_cpuid_entry(vcpu, 1, 0);
27 return best && (best->ecx & bit(X86_FEATURE_XSAVE));
30 static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
32 struct kvm_cpuid_entry2 *best;
34 best = kvm_find_cpuid_entry(vcpu, 7, 0);
35 return best && (best->ebx & bit(X86_FEATURE_SMEP));
38 static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
40 struct kvm_cpuid_entry2 *best;
42 best = kvm_find_cpuid_entry(vcpu, 7, 0);
43 return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
46 #endif