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gerrit-public.fairphone.software / kernel / msm-4.9 / 5b215625e927b6fa59c746dd83a446ee24285b46 / . / arch / x86 / kvm / cpuid.h
blob: c38369781239ad6f6fc54d5559c7b5b6f8eea2e7 [file] [log] [blame]
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]1#ifndef ARCH_X86_KVM_CPUID_H
2#define ARCH_X86_KVM_CPUID_H
3
4#include "x86.h"
Borislav Petkov91713fa2015-11-23 11:12:22 +0100[diff] [blame]5#include <asm/cpu.h>
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]6
Nadav Amitdd598092014-09-16 15:10:03 +0300[diff] [blame]7int kvm_update_cpuid(struct kvm_vcpu *vcpu);
Paolo Bonzinia87036a2016-03-08 09:52:13 +0100[diff] [blame]8bool kvm_mpx_supported(void);
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]9struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
10 u32 function, u32 index);
Borislav Petkov9c15bb12013-09-22 16:44:50 +0200[diff] [blame]11int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
12 struct kvm_cpuid_entry2 __user *entries,
13 unsigned int type);
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]14int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
15 struct kvm_cpuid *cpuid,
16 struct kvm_cpuid_entry __user *entries);
17int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
18 struct kvm_cpuid2 *cpuid,
19 struct kvm_cpuid_entry2 __user *entries);
20int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
21 struct kvm_cpuid2 *cpuid,
22 struct kvm_cpuid_entry2 __user *entries);
Avi Kivity62046e52012-06-07 14:07:48 +0300[diff] [blame]23void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]24
Eugene Korenevsky5a4f55c2015-03-29 23:56:12 +0300[diff] [blame]25int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);
26
27static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
28{
29 return vcpu->arch.maxphyaddr;
30}
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]31
32static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
33{
34 struct kvm_cpuid_entry2 *best;
35
Petr Matousek6d1068b2012-11-06 19:24:07 +0100[diff] [blame]36 if (!static_cpu_has(X86_FEATURE_XSAVE))
Joe Perches1d804d02015-03-30 16:46:09 -0700[diff] [blame]37 return false;
Petr Matousek6d1068b2012-11-06 19:24:07 +0100[diff] [blame]38
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]39 best = kvm_find_cpuid_entry(vcpu, 1, 0);
40 return best && (best->ecx & bit(X86_FEATURE_XSAVE));
41}
42
Paolo Bonzinie24dea22015-12-22 15:20:00 +0100[diff] [blame]43static inline bool guest_cpuid_has_mtrr(struct kvm_vcpu *vcpu)
44{
45 struct kvm_cpuid_entry2 *best;
46
47 best = kvm_find_cpuid_entry(vcpu, 1, 0);
48 return best && (best->edx & bit(X86_FEATURE_MTRR));
49}
50
Will Auldba904632012-11-29 12:42:50 -0800[diff] [blame]51static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
52{
53 struct kvm_cpuid_entry2 *best;
54
55 best = kvm_find_cpuid_entry(vcpu, 7, 0);
56 return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
57}
58
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]59static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
60{
61 struct kvm_cpuid_entry2 *best;
62
63 best = kvm_find_cpuid_entry(vcpu, 7, 0);
64 return best && (best->ebx & bit(X86_FEATURE_SMEP));
65}
66
Feng Wu97ec8c02014-04-01 17:46:34 +0800[diff] [blame]67static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
68{
69 struct kvm_cpuid_entry2 *best;
70
71 best = kvm_find_cpuid_entry(vcpu, 7, 0);
72 return best && (best->ebx & bit(X86_FEATURE_SMAP));
73}
74
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]75static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
76{
77 struct kvm_cpuid_entry2 *best;
78
79 best = kvm_find_cpuid_entry(vcpu, 7, 0);
80 return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
81}
82
Huaitong Hanb9baba82016-03-22 16:51:21 +0800[diff] [blame]83static inline bool guest_cpuid_has_pku(struct kvm_vcpu *vcpu)
84{
85 struct kvm_cpuid_entry2 *best;
86
87 best = kvm_find_cpuid_entry(vcpu, 7, 0);
88 return best && (best->ecx & bit(X86_FEATURE_PKU));
89}
90
Paolo Bonzini660a5d52015-05-05 11:50:23 +0200[diff] [blame]91static inline bool guest_cpuid_has_longmode(struct kvm_vcpu *vcpu)
92{
93 struct kvm_cpuid_entry2 *best;
94
95 best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
96 return best && (best->edx & bit(X86_FEATURE_LM));
97}
98
Boris Ostrovsky2b036c62012-01-09 14:00:35 -0500[diff] [blame]99static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
100{
101 struct kvm_cpuid_entry2 *best;
102
103 best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
104 return best && (best->ecx & bit(X86_FEATURE_OSVW));
105}
106
Mao, Junjiead756a12012-07-02 01:18:48 +0000[diff] [blame]107static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
108{
109 struct kvm_cpuid_entry2 *best;
110
111 best = kvm_find_cpuid_entry(vcpu, 1, 0);
112 return best && (best->ecx & bit(X86_FEATURE_PCID));
113}
114
Jan Kiszka58cb6282014-01-24 16:48:44 +0100[diff] [blame]115static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
116{
117 struct kvm_cpuid_entry2 *best;
118
119 best = kvm_find_cpuid_entry(vcpu, 1, 0);
120 return best && (best->ecx & bit(X86_FEATURE_X2APIC));
121}
122
Paolo Bonzinia0c0feb2014-09-02 13:24:12 +0200[diff] [blame]123static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu)
124{
125 struct kvm_cpuid_entry2 *best;
126
127 best = kvm_find_cpuid_entry(vcpu, 0, 0);
128 return best && best->ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx;
129}
130
Nadav Amit5f7dde72014-05-07 15:32:50 +0300[diff] [blame]131static inline bool guest_cpuid_has_gbpages(struct kvm_vcpu *vcpu)
132{
133 struct kvm_cpuid_entry2 *best;
134
135 best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
136 return best && (best->edx & bit(X86_FEATURE_GBPAGES));
137}
Nadav Amit6f43ed02014-07-15 17:37:46 +0300[diff] [blame]138
139static inline bool guest_cpuid_has_rtm(struct kvm_vcpu *vcpu)
140{
141 struct kvm_cpuid_entry2 *best;
142
143 best = kvm_find_cpuid_entry(vcpu, 7, 0);
144 return best && (best->ebx & bit(X86_FEATURE_RTM));
145}
Liang Lic447e762015-05-21 04:41:25 +0800[diff] [blame]146
Jim Mattsonfab777e2017-05-24 10:49:25 -0700[diff] [blame]147static inline bool guest_cpuid_has_mpx(struct kvm_vcpu *vcpu)
148{
149 struct kvm_cpuid_entry2 *best;
150
151 best = kvm_find_cpuid_entry(vcpu, 7, 0);
152 return best && (best->ebx & bit(X86_FEATURE_MPX));
153}
154
Xiao Guangrong1cea0ce2015-09-09 14:05:57 +0800[diff] [blame]155static inline bool guest_cpuid_has_rdtscp(struct kvm_vcpu *vcpu)
156{
157 struct kvm_cpuid_entry2 *best;
158
159 best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
160 return best && (best->edx & bit(X86_FEATURE_RDTSCP));
161}
Joerg Roedel6092d3d2015-10-14 15:10:54 +0200[diff] [blame]162
Ashok Raj70131292018-02-01 22:59:43 +0100[diff] [blame]163static inline bool guest_cpuid_has_ibpb(struct kvm_vcpu *vcpu)
164{
165 struct kvm_cpuid_entry2 *best;
166
167 best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
Borislav Petkov4a589082018-05-02 18:15:14 +0200[diff] [blame]168 if (best && (best->ebx & bit(X86_FEATURE_AMD_IBPB)))
Ashok Raj70131292018-02-01 22:59:43 +0100[diff] [blame]169 return true;
170 best = kvm_find_cpuid_entry(vcpu, 7, 0);
171 return best && (best->edx & bit(X86_FEATURE_SPEC_CTRL));
172}
173
Konrad Rzeszutek Wilk99318ec2018-04-25 22:04:25 -0400[diff] [blame]174static inline bool guest_cpuid_has_spec_ctrl(struct kvm_vcpu *vcpu)
KarimAllah Ahmede5a83412018-02-01 22:59:45 +0100[diff] [blame]175{
176 struct kvm_cpuid_entry2 *best;
177
178 best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
Borislav Petkov4a589082018-05-02 18:15:14 +0200[diff] [blame]179 if (best && (best->ebx & bit(X86_FEATURE_AMD_IBRS)))
KarimAllah Ahmede5a83412018-02-01 22:59:45 +0100[diff] [blame]180 return true;
181 best = kvm_find_cpuid_entry(vcpu, 7, 0);
Konrad Rzeszutek Wilkbf3da842018-05-09 21:41:38 +0200[diff] [blame]182 return best && (best->edx & (bit(X86_FEATURE_SPEC_CTRL) | bit(X86_FEATURE_SSBD)));
KarimAllah Ahmede5a83412018-02-01 22:59:45 +0100[diff] [blame]183}
184
KarimAllah Ahmed755502f2018-02-01 22:59:44 +0100[diff] [blame]185static inline bool guest_cpuid_has_arch_capabilities(struct kvm_vcpu *vcpu)
186{
187 struct kvm_cpuid_entry2 *best;
188
189 best = kvm_find_cpuid_entry(vcpu, 7, 0);
190 return best && (best->edx & bit(X86_FEATURE_ARCH_CAPABILITIES));
191}
192
Tom Lendackyb9655922018-05-10 22:06:39 +0200[diff] [blame]193static inline bool guest_cpuid_has_virt_ssbd(struct kvm_vcpu *vcpu)
194{
195 struct kvm_cpuid_entry2 *best;
196
197 best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
198 return best && (best->ebx & bit(X86_FEATURE_VIRT_SSBD));
199}
200
201
Ashok Raj70131292018-02-01 22:59:43 +0100[diff] [blame]202
Joerg Roedel6092d3d2015-10-14 15:10:54 +0200[diff] [blame]203/*
204 * NRIPS is provided through cpuidfn 0x8000000a.edx bit 3
205 */
206#define BIT_NRIPS 3
207
208static inline bool guest_cpuid_has_nrips(struct kvm_vcpu *vcpu)
209{
210 struct kvm_cpuid_entry2 *best;
211
212 best = kvm_find_cpuid_entry(vcpu, 0x8000000a, 0);
213
214 /*
215 * NRIPS is a scattered cpuid feature, so we can't use
216 * X86_FEATURE_NRIPS here (X86_FEATURE_NRIPS would be bit
217 * position 8, not 3).
218 */
219 return best && (best->edx & bit(BIT_NRIPS));
220}
221#undef BIT_NRIPS
222
Borislav Petkov91713fa2015-11-23 11:12:22 +0100[diff] [blame]223static inline int guest_cpuid_family(struct kvm_vcpu *vcpu)
224{
225 struct kvm_cpuid_entry2 *best;
226
227 best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
228 if (!best)
229 return -1;
230
231 return x86_family(best->eax);
232}
233
234static inline int guest_cpuid_model(struct kvm_vcpu *vcpu)
235{
236 struct kvm_cpuid_entry2 *best;
237
238 best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
239 if (!best)
240 return -1;
241
242 return x86_model(best->eax);
243}
244
245static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu)
246{
247 struct kvm_cpuid_entry2 *best;
248
249 best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
250 if (!best)
251 return -1;
252
253 return x86_stepping(best->eax);
254}
255
Avi Kivity00b27a32011-11-23 16:30:32 +0200[diff] [blame]256#endif