summaryrefslogtreecommitdiffstats
path: root/arch/x86/kvm/cpuid.h
blob: 06332cb7e7d1d79c5af04eba698ad8642c2762b5 (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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
#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);

int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);

static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.maxphyaddr;
}

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

	if (!static_cpu_has(X86_FEATURE_XSAVE))
		return false;

	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_longmode(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_LM));
}

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));
}

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

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_MPX));
}

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

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_PCOMMIT));
}

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

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_RDTSCP));
}

/*
 * NRIPS is provided through cpuidfn 0x8000000a.edx bit 3
 */
#define BIT_NRIPS	3

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

	best = kvm_find_cpuid_entry(vcpu, 0x8000000a, 0);

	/*
	 * NRIPS is a scattered cpuid feature, so we can't use
	 * X86_FEATURE_NRIPS here (X86_FEATURE_NRIPS would be bit
	 * position 8, not 3).
	 */
	return best && (best->edx & bit(BIT_NRIPS));
}
#undef BIT_NRIPS

#endif