summaryrefslogtreecommitdiffstats
path: root/arch/x86/kvm/cpuid.h
blob: 4452eedfaedd0a4849b54d4137edd5e85b24ae46 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
#ifndef ARCH_X86_KVM_CPUID_H
#define ARCH_X86_KVM_CPUID_H

#include "x86.h"

int 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_cpuid(struct kvm_cpuid2 *cpuid,
			    struct kvm_cpuid_entry2 __user *entries,
			    unsigned int type);
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_smap(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_SMAP));
}

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));
}

static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	return best && (best->ecx & bit(X86_FEATURE_X2APIC));
}

static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0, 0);
	return best && best->ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx;
}

static inline bool guest_cpuid_has_gbpages(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_GBPAGES));
}

static inline bool guest_cpuid_has_rtm(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_RTM));
}
#endif
OpenPOWER on IntegriCloud