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1 | 05330448 | aliguori | /*
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2 | 05330448 | aliguori | * QEMU KVM support
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3 | 05330448 | aliguori | *
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4 | 05330448 | aliguori | * Copyright (C) 2006-2008 Qumranet Technologies
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5 | 05330448 | aliguori | * Copyright IBM, Corp. 2008
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6 | 05330448 | aliguori | *
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7 | 05330448 | aliguori | * Authors:
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8 | 05330448 | aliguori | * Anthony Liguori <aliguori@us.ibm.com>
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9 | 05330448 | aliguori | *
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10 | 05330448 | aliguori | * This work is licensed under the terms of the GNU GPL, version 2 or later.
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11 | 05330448 | aliguori | * See the COPYING file in the top-level directory.
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12 | 05330448 | aliguori | *
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13 | 05330448 | aliguori | */
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14 | 05330448 | aliguori | |
15 | 05330448 | aliguori | #include <sys/types.h> |
16 | 05330448 | aliguori | #include <sys/ioctl.h> |
17 | 05330448 | aliguori | #include <sys/mman.h> |
18 | 25d2e361 | Marcelo Tosatti | #include <sys/utsname.h> |
19 | 05330448 | aliguori | |
20 | 05330448 | aliguori | #include <linux/kvm.h> |
21 | 05330448 | aliguori | |
22 | 05330448 | aliguori | #include "qemu-common.h" |
23 | 05330448 | aliguori | #include "sysemu.h" |
24 | 05330448 | aliguori | #include "kvm.h" |
25 | 05330448 | aliguori | #include "cpu.h" |
26 | e22a25c9 | aliguori | #include "gdbstub.h" |
27 | 0e607a80 | Jan Kiszka | #include "host-utils.h" |
28 | 4c5b10b7 | Jes Sorensen | #include "hw/pc.h" |
29 | 408392b3 | Sheng Yang | #include "hw/apic.h" |
30 | 35bed8ee | Paul Brook | #include "ioport.h" |
31 | e7701825 | Marcelo Tosatti | #include "kvm_x86.h" |
32 | 05330448 | aliguori | |
33 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
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34 | bb0300dc | Gleb Natapov | #include <linux/kvm_para.h> |
35 | bb0300dc | Gleb Natapov | #endif
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36 | bb0300dc | Gleb Natapov | //
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37 | 05330448 | aliguori | //#define DEBUG_KVM
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38 | 05330448 | aliguori | |
39 | 05330448 | aliguori | #ifdef DEBUG_KVM
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40 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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41 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
42 | 05330448 | aliguori | #else
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43 | 8c0d577e | Blue Swirl | #define DPRINTF(fmt, ...) \
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44 | 05330448 | aliguori | do { } while (0) |
45 | 05330448 | aliguori | #endif
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46 | 05330448 | aliguori | |
47 | 1a03675d | Glauber Costa | #define MSR_KVM_WALL_CLOCK 0x11 |
48 | 1a03675d | Glauber Costa | #define MSR_KVM_SYSTEM_TIME 0x12 |
49 | 1a03675d | Glauber Costa | |
50 | c0532a76 | Marcelo Tosatti | #ifndef BUS_MCEERR_AR
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51 | c0532a76 | Marcelo Tosatti | #define BUS_MCEERR_AR 4 |
52 | c0532a76 | Marcelo Tosatti | #endif
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53 | c0532a76 | Marcelo Tosatti | #ifndef BUS_MCEERR_AO
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54 | c0532a76 | Marcelo Tosatti | #define BUS_MCEERR_AO 5 |
55 | c0532a76 | Marcelo Tosatti | #endif
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56 | c0532a76 | Marcelo Tosatti | |
57 | 94a8d39a | Jan Kiszka | const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
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58 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(SET_TSS_ADDR), |
59 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(EXT_CPUID), |
60 | 94a8d39a | Jan Kiszka | KVM_CAP_INFO(MP_STATE), |
61 | 94a8d39a | Jan Kiszka | KVM_CAP_LAST_INFO |
62 | 94a8d39a | Jan Kiszka | }; |
63 | 25d2e361 | Marcelo Tosatti | |
64 | c3a3a7d3 | Jan Kiszka | static bool has_msr_star; |
65 | c3a3a7d3 | Jan Kiszka | static bool has_msr_hsave_pa; |
66 | c5999bfc | Jan Kiszka | #if defined(CONFIG_KVM_PARA) && defined(KVM_CAP_ASYNC_PF)
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67 | c5999bfc | Jan Kiszka | static bool has_msr_async_pf_en; |
68 | c5999bfc | Jan Kiszka | #endif
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69 | 25d2e361 | Marcelo Tosatti | static int lm_capable_kernel; |
70 | b827df58 | Avi Kivity | |
71 | b827df58 | Avi Kivity | static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max) |
72 | b827df58 | Avi Kivity | { |
73 | b827df58 | Avi Kivity | struct kvm_cpuid2 *cpuid;
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74 | b827df58 | Avi Kivity | int r, size;
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75 | b827df58 | Avi Kivity | |
76 | b827df58 | Avi Kivity | size = sizeof(*cpuid) + max * sizeof(*cpuid->entries); |
77 | b827df58 | Avi Kivity | cpuid = (struct kvm_cpuid2 *)qemu_mallocz(size);
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78 | b827df58 | Avi Kivity | cpuid->nent = max; |
79 | b827df58 | Avi Kivity | r = kvm_ioctl(s, KVM_GET_SUPPORTED_CPUID, cpuid); |
80 | 76ae317f | Mark McLoughlin | if (r == 0 && cpuid->nent >= max) { |
81 | 76ae317f | Mark McLoughlin | r = -E2BIG; |
82 | 76ae317f | Mark McLoughlin | } |
83 | b827df58 | Avi Kivity | if (r < 0) { |
84 | b827df58 | Avi Kivity | if (r == -E2BIG) {
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85 | b827df58 | Avi Kivity | qemu_free(cpuid); |
86 | b827df58 | Avi Kivity | return NULL; |
87 | b827df58 | Avi Kivity | } else {
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88 | b827df58 | Avi Kivity | fprintf(stderr, "KVM_GET_SUPPORTED_CPUID failed: %s\n",
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89 | b827df58 | Avi Kivity | strerror(-r)); |
90 | b827df58 | Avi Kivity | exit(1);
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91 | b827df58 | Avi Kivity | } |
92 | b827df58 | Avi Kivity | } |
93 | b827df58 | Avi Kivity | return cpuid;
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94 | b827df58 | Avi Kivity | } |
95 | b827df58 | Avi Kivity | |
96 | c958a8bd | Sheng Yang | uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, |
97 | c958a8bd | Sheng Yang | uint32_t index, int reg)
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98 | b827df58 | Avi Kivity | { |
99 | b827df58 | Avi Kivity | struct kvm_cpuid2 *cpuid;
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100 | b827df58 | Avi Kivity | int i, max;
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101 | b827df58 | Avi Kivity | uint32_t ret = 0;
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102 | b827df58 | Avi Kivity | uint32_t cpuid_1_edx; |
103 | b827df58 | Avi Kivity | |
104 | b827df58 | Avi Kivity | max = 1;
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105 | b827df58 | Avi Kivity | while ((cpuid = try_get_cpuid(env->kvm_state, max)) == NULL) { |
106 | b827df58 | Avi Kivity | max *= 2;
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107 | b827df58 | Avi Kivity | } |
108 | b827df58 | Avi Kivity | |
109 | b827df58 | Avi Kivity | for (i = 0; i < cpuid->nent; ++i) { |
110 | c958a8bd | Sheng Yang | if (cpuid->entries[i].function == function &&
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111 | c958a8bd | Sheng Yang | cpuid->entries[i].index == index) { |
112 | b827df58 | Avi Kivity | switch (reg) {
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113 | b827df58 | Avi Kivity | case R_EAX:
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114 | b827df58 | Avi Kivity | ret = cpuid->entries[i].eax; |
115 | b827df58 | Avi Kivity | break;
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116 | b827df58 | Avi Kivity | case R_EBX:
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117 | b827df58 | Avi Kivity | ret = cpuid->entries[i].ebx; |
118 | b827df58 | Avi Kivity | break;
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119 | b827df58 | Avi Kivity | case R_ECX:
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120 | b827df58 | Avi Kivity | ret = cpuid->entries[i].ecx; |
121 | b827df58 | Avi Kivity | break;
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122 | b827df58 | Avi Kivity | case R_EDX:
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123 | b827df58 | Avi Kivity | ret = cpuid->entries[i].edx; |
124 | 19ccb8ea | Jan Kiszka | switch (function) {
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125 | 19ccb8ea | Jan Kiszka | case 1: |
126 | 19ccb8ea | Jan Kiszka | /* KVM before 2.6.30 misreports the following features */
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127 | 19ccb8ea | Jan Kiszka | ret |= CPUID_MTRR | CPUID_PAT | CPUID_MCE | CPUID_MCA; |
128 | 19ccb8ea | Jan Kiszka | break;
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129 | 19ccb8ea | Jan Kiszka | case 0x80000001: |
130 | b827df58 | Avi Kivity | /* On Intel, kvm returns cpuid according to the Intel spec,
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131 | b827df58 | Avi Kivity | * so add missing bits according to the AMD spec:
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132 | b827df58 | Avi Kivity | */
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133 | c958a8bd | Sheng Yang | cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, 0, R_EDX); |
134 | c1667e40 | Gleb Natapov | ret |= cpuid_1_edx & 0x183f7ff;
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135 | 19ccb8ea | Jan Kiszka | break;
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136 | b827df58 | Avi Kivity | } |
137 | b827df58 | Avi Kivity | break;
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138 | b827df58 | Avi Kivity | } |
139 | b827df58 | Avi Kivity | } |
140 | b827df58 | Avi Kivity | } |
141 | b827df58 | Avi Kivity | |
142 | b827df58 | Avi Kivity | qemu_free(cpuid); |
143 | b827df58 | Avi Kivity | |
144 | b827df58 | Avi Kivity | return ret;
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145 | b827df58 | Avi Kivity | } |
146 | b827df58 | Avi Kivity | |
147 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
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148 | bb0300dc | Gleb Natapov | struct kvm_para_features {
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149 | b9bec74b | Jan Kiszka | int cap;
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150 | b9bec74b | Jan Kiszka | int feature;
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151 | bb0300dc | Gleb Natapov | } para_features[] = { |
152 | b9bec74b | Jan Kiszka | { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE }, |
153 | b9bec74b | Jan Kiszka | { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY }, |
154 | b9bec74b | Jan Kiszka | { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP }, |
155 | f6584ee2 | Gleb Natapov | #ifdef KVM_CAP_ASYNC_PF
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156 | b9bec74b | Jan Kiszka | { KVM_CAP_ASYNC_PF, KVM_FEATURE_ASYNC_PF }, |
157 | f6584ee2 | Gleb Natapov | #endif
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158 | b9bec74b | Jan Kiszka | { -1, -1 } |
159 | bb0300dc | Gleb Natapov | }; |
160 | bb0300dc | Gleb Natapov | |
161 | bb0300dc | Gleb Natapov | static int get_para_features(CPUState *env) |
162 | bb0300dc | Gleb Natapov | { |
163 | b9bec74b | Jan Kiszka | int i, features = 0; |
164 | bb0300dc | Gleb Natapov | |
165 | b9bec74b | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(para_features) - 1; i++) { |
166 | b9bec74b | Jan Kiszka | if (kvm_check_extension(env->kvm_state, para_features[i].cap)) {
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167 | b9bec74b | Jan Kiszka | features |= (1 << para_features[i].feature);
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168 | bb0300dc | Gleb Natapov | } |
169 | b9bec74b | Jan Kiszka | } |
170 | b3a98367 | Anthony Liguori | #ifdef KVM_CAP_ASYNC_PF
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171 | c5999bfc | Jan Kiszka | has_msr_async_pf_en = features & (1 << KVM_FEATURE_ASYNC_PF);
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172 | b3a98367 | Anthony Liguori | #endif
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173 | b9bec74b | Jan Kiszka | return features;
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174 | bb0300dc | Gleb Natapov | } |
175 | 419fb20a | Jan Kiszka | #endif /* CONFIG_KVM_PARA */ |
176 | bb0300dc | Gleb Natapov | |
177 | e7701825 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
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178 | e7701825 | Marcelo Tosatti | static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap, |
179 | e7701825 | Marcelo Tosatti | int *max_banks)
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180 | e7701825 | Marcelo Tosatti | { |
181 | e7701825 | Marcelo Tosatti | int r;
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182 | e7701825 | Marcelo Tosatti | |
183 | 14a09518 | Lai Jiangshan | r = kvm_check_extension(s, KVM_CAP_MCE); |
184 | e7701825 | Marcelo Tosatti | if (r > 0) { |
185 | e7701825 | Marcelo Tosatti | *max_banks = r; |
186 | e7701825 | Marcelo Tosatti | return kvm_ioctl(s, KVM_X86_GET_MCE_CAP_SUPPORTED, mce_cap);
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187 | e7701825 | Marcelo Tosatti | } |
188 | e7701825 | Marcelo Tosatti | return -ENOSYS;
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189 | e7701825 | Marcelo Tosatti | } |
190 | e7701825 | Marcelo Tosatti | |
191 | e7701825 | Marcelo Tosatti | static int kvm_setup_mce(CPUState *env, uint64_t *mcg_cap) |
192 | e7701825 | Marcelo Tosatti | { |
193 | e7701825 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, mcg_cap);
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194 | e7701825 | Marcelo Tosatti | } |
195 | e7701825 | Marcelo Tosatti | |
196 | e7701825 | Marcelo Tosatti | static int kvm_set_mce(CPUState *env, struct kvm_x86_mce *m) |
197 | e7701825 | Marcelo Tosatti | { |
198 | e7701825 | Marcelo Tosatti | return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, m);
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199 | e7701825 | Marcelo Tosatti | } |
200 | e7701825 | Marcelo Tosatti | |
201 | c0532a76 | Marcelo Tosatti | static int kvm_get_msr(CPUState *env, struct kvm_msr_entry *msrs, int n) |
202 | c0532a76 | Marcelo Tosatti | { |
203 | c0532a76 | Marcelo Tosatti | struct kvm_msrs *kmsrs = qemu_malloc(sizeof *kmsrs + n * sizeof *msrs); |
204 | c0532a76 | Marcelo Tosatti | int r;
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205 | c0532a76 | Marcelo Tosatti | |
206 | c0532a76 | Marcelo Tosatti | kmsrs->nmsrs = n; |
207 | c0532a76 | Marcelo Tosatti | memcpy(kmsrs->entries, msrs, n * sizeof *msrs);
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208 | c0532a76 | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_GET_MSRS, kmsrs); |
209 | c0532a76 | Marcelo Tosatti | memcpy(msrs, kmsrs->entries, n * sizeof *msrs);
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210 | c0532a76 | Marcelo Tosatti | free(kmsrs); |
211 | c0532a76 | Marcelo Tosatti | return r;
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212 | c0532a76 | Marcelo Tosatti | } |
213 | c0532a76 | Marcelo Tosatti | |
214 | c0532a76 | Marcelo Tosatti | /* FIXME: kill this and kvm_get_msr, use env->mcg_status instead */
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215 | 6643e2f0 | Jin Dongming | static int kvm_mce_in_progress(CPUState *env) |
216 | c0532a76 | Marcelo Tosatti | { |
217 | c0532a76 | Marcelo Tosatti | struct kvm_msr_entry msr_mcg_status = {
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218 | c0532a76 | Marcelo Tosatti | .index = MSR_MCG_STATUS, |
219 | c0532a76 | Marcelo Tosatti | }; |
220 | c0532a76 | Marcelo Tosatti | int r;
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221 | c0532a76 | Marcelo Tosatti | |
222 | c0532a76 | Marcelo Tosatti | r = kvm_get_msr(env, &msr_mcg_status, 1);
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223 | c0532a76 | Marcelo Tosatti | if (r == -1 || r == 0) { |
224 | 6643e2f0 | Jin Dongming | fprintf(stderr, "Failed to get MCE status\n");
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225 | 6643e2f0 | Jin Dongming | return 0; |
226 | c0532a76 | Marcelo Tosatti | } |
227 | c0532a76 | Marcelo Tosatti | return !!(msr_mcg_status.data & MCG_STATUS_MCIP);
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228 | c0532a76 | Marcelo Tosatti | } |
229 | c0532a76 | Marcelo Tosatti | |
230 | e7701825 | Marcelo Tosatti | struct kvm_x86_mce_data
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231 | e7701825 | Marcelo Tosatti | { |
232 | e7701825 | Marcelo Tosatti | CPUState *env; |
233 | e7701825 | Marcelo Tosatti | struct kvm_x86_mce *mce;
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234 | c0532a76 | Marcelo Tosatti | int abort_on_error;
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235 | e7701825 | Marcelo Tosatti | }; |
236 | e7701825 | Marcelo Tosatti | |
237 | e7701825 | Marcelo Tosatti | static void kvm_do_inject_x86_mce(void *_data) |
238 | e7701825 | Marcelo Tosatti | { |
239 | e7701825 | Marcelo Tosatti | struct kvm_x86_mce_data *data = _data;
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240 | e7701825 | Marcelo Tosatti | int r;
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241 | e7701825 | Marcelo Tosatti | |
242 | f8502cfb | Hidetoshi Seto | /* If there is an MCE exception being processed, ignore this SRAO MCE */
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243 | f8502cfb | Hidetoshi Seto | if ((data->env->mcg_cap & MCG_SER_P) &&
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244 | f8502cfb | Hidetoshi Seto | !(data->mce->status & MCI_STATUS_AR)) { |
245 | 6643e2f0 | Jin Dongming | if (kvm_mce_in_progress(data->env)) {
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246 | f8502cfb | Hidetoshi Seto | return;
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247 | f8502cfb | Hidetoshi Seto | } |
248 | f8502cfb | Hidetoshi Seto | } |
249 | c0532a76 | Marcelo Tosatti | |
250 | e7701825 | Marcelo Tosatti | r = kvm_set_mce(data->env, data->mce); |
251 | c0532a76 | Marcelo Tosatti | if (r < 0) { |
252 | e7701825 | Marcelo Tosatti | perror("kvm_set_mce FAILED");
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253 | c0532a76 | Marcelo Tosatti | if (data->abort_on_error) {
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254 | c0532a76 | Marcelo Tosatti | abort(); |
255 | c0532a76 | Marcelo Tosatti | } |
256 | c0532a76 | Marcelo Tosatti | } |
257 | e7701825 | Marcelo Tosatti | } |
258 | 31ce5e0c | Jin Dongming | |
259 | 7cc2cc3e | Jin Dongming | static void kvm_inject_x86_mce_on(CPUState *env, struct kvm_x86_mce *mce, |
260 | 7cc2cc3e | Jin Dongming | int flag)
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261 | 7cc2cc3e | Jin Dongming | { |
262 | 7cc2cc3e | Jin Dongming | struct kvm_x86_mce_data data = {
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263 | 7cc2cc3e | Jin Dongming | .env = env, |
264 | 7cc2cc3e | Jin Dongming | .mce = mce, |
265 | 7cc2cc3e | Jin Dongming | .abort_on_error = (flag & ABORT_ON_ERROR), |
266 | 7cc2cc3e | Jin Dongming | }; |
267 | 7cc2cc3e | Jin Dongming | |
268 | 7cc2cc3e | Jin Dongming | if (!env->mcg_cap) {
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269 | 7cc2cc3e | Jin Dongming | fprintf(stderr, "MCE support is not enabled!\n");
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270 | 7cc2cc3e | Jin Dongming | return;
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271 | 7cc2cc3e | Jin Dongming | } |
272 | 7cc2cc3e | Jin Dongming | |
273 | 7cc2cc3e | Jin Dongming | run_on_cpu(env, kvm_do_inject_x86_mce, &data); |
274 | 7cc2cc3e | Jin Dongming | } |
275 | 7cc2cc3e | Jin Dongming | |
276 | 419fb20a | Jan Kiszka | static void kvm_mce_broadcast_rest(CPUState *env) |
277 | 419fb20a | Jan Kiszka | { |
278 | 419fb20a | Jan Kiszka | struct kvm_x86_mce mce = {
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279 | 419fb20a | Jan Kiszka | .bank = 1,
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280 | 419fb20a | Jan Kiszka | .status = MCI_STATUS_VAL | MCI_STATUS_UC, |
281 | 419fb20a | Jan Kiszka | .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, |
282 | 419fb20a | Jan Kiszka | .addr = 0,
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283 | 419fb20a | Jan Kiszka | .misc = 0,
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284 | 419fb20a | Jan Kiszka | }; |
285 | 419fb20a | Jan Kiszka | CPUState *cenv; |
286 | 419fb20a | Jan Kiszka | |
287 | 419fb20a | Jan Kiszka | /* Broadcast MCA signal for processor version 06H_EH and above */
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288 | 419fb20a | Jan Kiszka | if (cpu_x86_support_mca_broadcast(env)) {
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289 | 419fb20a | Jan Kiszka | for (cenv = first_cpu; cenv != NULL; cenv = cenv->next_cpu) { |
290 | 419fb20a | Jan Kiszka | if (cenv == env) {
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291 | 419fb20a | Jan Kiszka | continue;
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292 | 419fb20a | Jan Kiszka | } |
293 | 419fb20a | Jan Kiszka | kvm_inject_x86_mce_on(cenv, &mce, ABORT_ON_ERROR); |
294 | 419fb20a | Jan Kiszka | } |
295 | 419fb20a | Jan Kiszka | } |
296 | 419fb20a | Jan Kiszka | } |
297 | 419fb20a | Jan Kiszka | |
298 | 419fb20a | Jan Kiszka | static void kvm_mce_inj_srar_dataload(CPUState *env, target_phys_addr_t paddr) |
299 | 419fb20a | Jan Kiszka | { |
300 | 419fb20a | Jan Kiszka | struct kvm_x86_mce mce = {
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301 | 419fb20a | Jan Kiszka | .bank = 9,
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302 | 419fb20a | Jan Kiszka | .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN |
303 | 419fb20a | Jan Kiszka | | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S |
304 | 419fb20a | Jan Kiszka | | MCI_STATUS_AR | 0x134,
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305 | 419fb20a | Jan Kiszka | .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_EIPV, |
306 | 419fb20a | Jan Kiszka | .addr = paddr, |
307 | 419fb20a | Jan Kiszka | .misc = (MCM_ADDR_PHYS << 6) | 0xc, |
308 | 419fb20a | Jan Kiszka | }; |
309 | 419fb20a | Jan Kiszka | int r;
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310 | 419fb20a | Jan Kiszka | |
311 | 419fb20a | Jan Kiszka | r = kvm_set_mce(env, &mce); |
312 | 419fb20a | Jan Kiszka | if (r < 0) { |
313 | 419fb20a | Jan Kiszka | fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno));
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314 | 419fb20a | Jan Kiszka | abort(); |
315 | 419fb20a | Jan Kiszka | } |
316 | 419fb20a | Jan Kiszka | kvm_mce_broadcast_rest(env); |
317 | 419fb20a | Jan Kiszka | } |
318 | 419fb20a | Jan Kiszka | |
319 | 419fb20a | Jan Kiszka | static void kvm_mce_inj_srao_memscrub(CPUState *env, target_phys_addr_t paddr) |
320 | 419fb20a | Jan Kiszka | { |
321 | 419fb20a | Jan Kiszka | struct kvm_x86_mce mce = {
|
322 | 419fb20a | Jan Kiszka | .bank = 9,
|
323 | 419fb20a | Jan Kiszka | .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN |
324 | 419fb20a | Jan Kiszka | | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S |
325 | 419fb20a | Jan Kiszka | | 0xc0,
|
326 | 419fb20a | Jan Kiszka | .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, |
327 | 419fb20a | Jan Kiszka | .addr = paddr, |
328 | 419fb20a | Jan Kiszka | .misc = (MCM_ADDR_PHYS << 6) | 0xc, |
329 | 419fb20a | Jan Kiszka | }; |
330 | 419fb20a | Jan Kiszka | int r;
|
331 | 419fb20a | Jan Kiszka | |
332 | 419fb20a | Jan Kiszka | r = kvm_set_mce(env, &mce); |
333 | 419fb20a | Jan Kiszka | if (r < 0) { |
334 | 419fb20a | Jan Kiszka | fprintf(stderr, "kvm_set_mce: %s\n", strerror(errno));
|
335 | 419fb20a | Jan Kiszka | abort(); |
336 | 419fb20a | Jan Kiszka | } |
337 | 419fb20a | Jan Kiszka | kvm_mce_broadcast_rest(env); |
338 | 419fb20a | Jan Kiszka | } |
339 | 419fb20a | Jan Kiszka | |
340 | 419fb20a | Jan Kiszka | static void kvm_mce_inj_srao_memscrub2(CPUState *env, target_phys_addr_t paddr) |
341 | 419fb20a | Jan Kiszka | { |
342 | 419fb20a | Jan Kiszka | struct kvm_x86_mce mce = {
|
343 | 419fb20a | Jan Kiszka | .bank = 9,
|
344 | 419fb20a | Jan Kiszka | .status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN |
345 | 419fb20a | Jan Kiszka | | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S |
346 | 419fb20a | Jan Kiszka | | 0xc0,
|
347 | 419fb20a | Jan Kiszka | .mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV, |
348 | 419fb20a | Jan Kiszka | .addr = paddr, |
349 | 419fb20a | Jan Kiszka | .misc = (MCM_ADDR_PHYS << 6) | 0xc, |
350 | 419fb20a | Jan Kiszka | }; |
351 | 419fb20a | Jan Kiszka | |
352 | 419fb20a | Jan Kiszka | kvm_inject_x86_mce_on(env, &mce, ABORT_ON_ERROR); |
353 | 419fb20a | Jan Kiszka | kvm_mce_broadcast_rest(env); |
354 | 419fb20a | Jan Kiszka | } |
355 | 419fb20a | Jan Kiszka | #endif /* KVM_CAP_MCE */ |
356 | 419fb20a | Jan Kiszka | |
357 | 419fb20a | Jan Kiszka | static void hardware_memory_error(void) |
358 | 419fb20a | Jan Kiszka | { |
359 | 419fb20a | Jan Kiszka | fprintf(stderr, "Hardware memory error!\n");
|
360 | 419fb20a | Jan Kiszka | exit(1);
|
361 | 419fb20a | Jan Kiszka | } |
362 | 419fb20a | Jan Kiszka | |
363 | 419fb20a | Jan Kiszka | int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr) |
364 | 419fb20a | Jan Kiszka | { |
365 | 419fb20a | Jan Kiszka | #ifdef KVM_CAP_MCE
|
366 | 419fb20a | Jan Kiszka | void *vaddr;
|
367 | 419fb20a | Jan Kiszka | ram_addr_t ram_addr; |
368 | 419fb20a | Jan Kiszka | target_phys_addr_t paddr; |
369 | 419fb20a | Jan Kiszka | |
370 | 419fb20a | Jan Kiszka | if ((env->mcg_cap & MCG_SER_P) && addr
|
371 | 419fb20a | Jan Kiszka | && (code == BUS_MCEERR_AR |
372 | 419fb20a | Jan Kiszka | || code == BUS_MCEERR_AO)) { |
373 | 419fb20a | Jan Kiszka | vaddr = (void *)addr;
|
374 | 419fb20a | Jan Kiszka | if (qemu_ram_addr_from_host(vaddr, &ram_addr) ||
|
375 | 419fb20a | Jan Kiszka | !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr, &paddr)) { |
376 | 419fb20a | Jan Kiszka | fprintf(stderr, "Hardware memory error for memory used by "
|
377 | 419fb20a | Jan Kiszka | "QEMU itself instead of guest system!\n");
|
378 | 419fb20a | Jan Kiszka | /* Hope we are lucky for AO MCE */
|
379 | 419fb20a | Jan Kiszka | if (code == BUS_MCEERR_AO) {
|
380 | 419fb20a | Jan Kiszka | return 0; |
381 | 419fb20a | Jan Kiszka | } else {
|
382 | 419fb20a | Jan Kiszka | hardware_memory_error(); |
383 | 419fb20a | Jan Kiszka | } |
384 | 419fb20a | Jan Kiszka | } |
385 | 419fb20a | Jan Kiszka | |
386 | 419fb20a | Jan Kiszka | if (code == BUS_MCEERR_AR) {
|
387 | 419fb20a | Jan Kiszka | /* Fake an Intel architectural Data Load SRAR UCR */
|
388 | 419fb20a | Jan Kiszka | kvm_mce_inj_srar_dataload(env, paddr); |
389 | 419fb20a | Jan Kiszka | } else {
|
390 | 419fb20a | Jan Kiszka | /*
|
391 | 419fb20a | Jan Kiszka | * If there is an MCE excpetion being processed, ignore
|
392 | 419fb20a | Jan Kiszka | * this SRAO MCE
|
393 | 419fb20a | Jan Kiszka | */
|
394 | 419fb20a | Jan Kiszka | if (!kvm_mce_in_progress(env)) {
|
395 | 419fb20a | Jan Kiszka | /* Fake an Intel architectural Memory scrubbing UCR */
|
396 | 419fb20a | Jan Kiszka | kvm_mce_inj_srao_memscrub(env, paddr); |
397 | 419fb20a | Jan Kiszka | } |
398 | 419fb20a | Jan Kiszka | } |
399 | 419fb20a | Jan Kiszka | } else
|
400 | 419fb20a | Jan Kiszka | #endif /* KVM_CAP_MCE */ |
401 | 419fb20a | Jan Kiszka | { |
402 | 419fb20a | Jan Kiszka | if (code == BUS_MCEERR_AO) {
|
403 | 419fb20a | Jan Kiszka | return 0; |
404 | 419fb20a | Jan Kiszka | } else if (code == BUS_MCEERR_AR) { |
405 | 419fb20a | Jan Kiszka | hardware_memory_error(); |
406 | 419fb20a | Jan Kiszka | } else {
|
407 | 419fb20a | Jan Kiszka | return 1; |
408 | 419fb20a | Jan Kiszka | } |
409 | 419fb20a | Jan Kiszka | } |
410 | 419fb20a | Jan Kiszka | return 0; |
411 | 419fb20a | Jan Kiszka | } |
412 | 419fb20a | Jan Kiszka | |
413 | 419fb20a | Jan Kiszka | int kvm_arch_on_sigbus(int code, void *addr) |
414 | 419fb20a | Jan Kiszka | { |
415 | 419fb20a | Jan Kiszka | #ifdef KVM_CAP_MCE
|
416 | 419fb20a | Jan Kiszka | if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) {
|
417 | 419fb20a | Jan Kiszka | void *vaddr;
|
418 | 419fb20a | Jan Kiszka | ram_addr_t ram_addr; |
419 | 419fb20a | Jan Kiszka | target_phys_addr_t paddr; |
420 | 419fb20a | Jan Kiszka | |
421 | 419fb20a | Jan Kiszka | /* Hope we are lucky for AO MCE */
|
422 | 419fb20a | Jan Kiszka | vaddr = addr; |
423 | 419fb20a | Jan Kiszka | if (qemu_ram_addr_from_host(vaddr, &ram_addr) ||
|
424 | 419fb20a | Jan Kiszka | !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr, |
425 | 419fb20a | Jan Kiszka | &paddr)) { |
426 | 419fb20a | Jan Kiszka | fprintf(stderr, "Hardware memory error for memory used by "
|
427 | 419fb20a | Jan Kiszka | "QEMU itself instead of guest system!: %p\n", addr);
|
428 | 419fb20a | Jan Kiszka | return 0; |
429 | 419fb20a | Jan Kiszka | } |
430 | 419fb20a | Jan Kiszka | kvm_mce_inj_srao_memscrub2(first_cpu, paddr); |
431 | 419fb20a | Jan Kiszka | } else
|
432 | 419fb20a | Jan Kiszka | #endif /* KVM_CAP_MCE */ |
433 | 419fb20a | Jan Kiszka | { |
434 | 419fb20a | Jan Kiszka | if (code == BUS_MCEERR_AO) {
|
435 | 419fb20a | Jan Kiszka | return 0; |
436 | 419fb20a | Jan Kiszka | } else if (code == BUS_MCEERR_AR) { |
437 | 419fb20a | Jan Kiszka | hardware_memory_error(); |
438 | 419fb20a | Jan Kiszka | } else {
|
439 | 419fb20a | Jan Kiszka | return 1; |
440 | 419fb20a | Jan Kiszka | } |
441 | 419fb20a | Jan Kiszka | } |
442 | 419fb20a | Jan Kiszka | return 0; |
443 | 419fb20a | Jan Kiszka | } |
444 | e7701825 | Marcelo Tosatti | |
445 | e7701825 | Marcelo Tosatti | void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
446 | c0532a76 | Marcelo Tosatti | uint64_t mcg_status, uint64_t addr, uint64_t misc, |
447 | 31ce5e0c | Jin Dongming | int flag)
|
448 | e7701825 | Marcelo Tosatti | { |
449 | e7701825 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
450 | e7701825 | Marcelo Tosatti | struct kvm_x86_mce mce = {
|
451 | e7701825 | Marcelo Tosatti | .bank = bank, |
452 | e7701825 | Marcelo Tosatti | .status = status, |
453 | e7701825 | Marcelo Tosatti | .mcg_status = mcg_status, |
454 | e7701825 | Marcelo Tosatti | .addr = addr, |
455 | e7701825 | Marcelo Tosatti | .misc = misc, |
456 | e7701825 | Marcelo Tosatti | }; |
457 | e7701825 | Marcelo Tosatti | |
458 | 31ce5e0c | Jin Dongming | if (flag & MCE_BROADCAST) {
|
459 | 31ce5e0c | Jin Dongming | kvm_mce_broadcast_rest(cenv); |
460 | c0532a76 | Marcelo Tosatti | } |
461 | c0532a76 | Marcelo Tosatti | |
462 | 7cc2cc3e | Jin Dongming | kvm_inject_x86_mce_on(cenv, &mce, flag); |
463 | 419fb20a | Jan Kiszka | #else /* !KVM_CAP_MCE*/ |
464 | 31ce5e0c | Jin Dongming | if (flag & ABORT_ON_ERROR) {
|
465 | c0532a76 | Marcelo Tosatti | abort(); |
466 | 31ce5e0c | Jin Dongming | } |
467 | 419fb20a | Jan Kiszka | #endif /* !KVM_CAP_MCE*/ |
468 | e7701825 | Marcelo Tosatti | } |
469 | e7701825 | Marcelo Tosatti | |
470 | b8cc45d6 | Glauber Costa | static void cpu_update_state(void *opaque, int running, int reason) |
471 | b8cc45d6 | Glauber Costa | { |
472 | b8cc45d6 | Glauber Costa | CPUState *env = opaque; |
473 | b8cc45d6 | Glauber Costa | |
474 | b8cc45d6 | Glauber Costa | if (running) {
|
475 | b8cc45d6 | Glauber Costa | env->tsc_valid = false;
|
476 | b8cc45d6 | Glauber Costa | } |
477 | b8cc45d6 | Glauber Costa | } |
478 | b8cc45d6 | Glauber Costa | |
479 | 05330448 | aliguori | int kvm_arch_init_vcpu(CPUState *env)
|
480 | 05330448 | aliguori | { |
481 | 05330448 | aliguori | struct {
|
482 | 486bd5a2 | aliguori | struct kvm_cpuid2 cpuid;
|
483 | 486bd5a2 | aliguori | struct kvm_cpuid_entry2 entries[100]; |
484 | 05330448 | aliguori | } __attribute__((packed)) cpuid_data; |
485 | 486bd5a2 | aliguori | uint32_t limit, i, j, cpuid_i; |
486 | a33609ca | aliguori | uint32_t unused; |
487 | bb0300dc | Gleb Natapov | struct kvm_cpuid_entry2 *c;
|
488 | 521f0798 | Jan Kiszka | #ifdef CONFIG_KVM_PARA
|
489 | bb0300dc | Gleb Natapov | uint32_t signature[3];
|
490 | bb0300dc | Gleb Natapov | #endif
|
491 | 05330448 | aliguori | |
492 | c958a8bd | Sheng Yang | env->cpuid_features &= kvm_arch_get_supported_cpuid(env, 1, 0, R_EDX); |
493 | 6c0d7ee8 | Andre Przywara | |
494 | 6c0d7ee8 | Andre Przywara | i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR; |
495 | c958a8bd | Sheng Yang | env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(env, 1, 0, R_ECX); |
496 | 6c0d7ee8 | Andre Przywara | env->cpuid_ext_features |= i; |
497 | 6c0d7ee8 | Andre Przywara | |
498 | 457dfed6 | Andre Przywara | env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
|
499 | c958a8bd | Sheng Yang | 0, R_EDX);
|
500 | 457dfed6 | Andre Przywara | env->cpuid_ext3_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
|
501 | c958a8bd | Sheng Yang | 0, R_ECX);
|
502 | 296acb64 | Joerg Roedel | env->cpuid_svm_features &= kvm_arch_get_supported_cpuid(env, 0x8000000A,
|
503 | 296acb64 | Joerg Roedel | 0, R_EDX);
|
504 | 296acb64 | Joerg Roedel | |
505 | 6c1f42fe | Andre Przywara | |
506 | 05330448 | aliguori | cpuid_i = 0;
|
507 | 05330448 | aliguori | |
508 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
|
509 | bb0300dc | Gleb Natapov | /* Paravirtualization CPUIDs */
|
510 | bb0300dc | Gleb Natapov | memcpy(signature, "KVMKVMKVM\0\0\0", 12); |
511 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
512 | bb0300dc | Gleb Natapov | memset(c, 0, sizeof(*c)); |
513 | bb0300dc | Gleb Natapov | c->function = KVM_CPUID_SIGNATURE; |
514 | bb0300dc | Gleb Natapov | c->eax = 0;
|
515 | bb0300dc | Gleb Natapov | c->ebx = signature[0];
|
516 | bb0300dc | Gleb Natapov | c->ecx = signature[1];
|
517 | bb0300dc | Gleb Natapov | c->edx = signature[2];
|
518 | bb0300dc | Gleb Natapov | |
519 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
520 | bb0300dc | Gleb Natapov | memset(c, 0, sizeof(*c)); |
521 | bb0300dc | Gleb Natapov | c->function = KVM_CPUID_FEATURES; |
522 | bb0300dc | Gleb Natapov | c->eax = env->cpuid_kvm_features & get_para_features(env); |
523 | bb0300dc | Gleb Natapov | #endif
|
524 | bb0300dc | Gleb Natapov | |
525 | a33609ca | aliguori | cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused); |
526 | 05330448 | aliguori | |
527 | 05330448 | aliguori | for (i = 0; i <= limit; i++) { |
528 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
529 | 486bd5a2 | aliguori | |
530 | 486bd5a2 | aliguori | switch (i) {
|
531 | a36b1029 | aliguori | case 2: { |
532 | a36b1029 | aliguori | /* Keep reading function 2 till all the input is received */
|
533 | a36b1029 | aliguori | int times;
|
534 | a36b1029 | aliguori | |
535 | a36b1029 | aliguori | c->function = i; |
536 | a33609ca | aliguori | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC | |
537 | a33609ca | aliguori | KVM_CPUID_FLAG_STATE_READ_NEXT; |
538 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
|
539 | a33609ca | aliguori | times = c->eax & 0xff;
|
540 | a36b1029 | aliguori | |
541 | a36b1029 | aliguori | for (j = 1; j < times; ++j) { |
542 | a33609ca | aliguori | c = &cpuid_data.entries[cpuid_i++]; |
543 | a36b1029 | aliguori | c->function = i; |
544 | a33609ca | aliguori | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC; |
545 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
|
546 | a36b1029 | aliguori | } |
547 | a36b1029 | aliguori | break;
|
548 | a36b1029 | aliguori | } |
549 | 486bd5a2 | aliguori | case 4: |
550 | 486bd5a2 | aliguori | case 0xb: |
551 | 486bd5a2 | aliguori | case 0xd: |
552 | 486bd5a2 | aliguori | for (j = 0; ; j++) { |
553 | 486bd5a2 | aliguori | c->function = i; |
554 | 486bd5a2 | aliguori | c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; |
555 | 486bd5a2 | aliguori | c->index = j; |
556 | a33609ca | aliguori | cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->edx); |
557 | 486bd5a2 | aliguori | |
558 | b9bec74b | Jan Kiszka | if (i == 4 && c->eax == 0) { |
559 | 486bd5a2 | aliguori | break;
|
560 | b9bec74b | Jan Kiszka | } |
561 | b9bec74b | Jan Kiszka | if (i == 0xb && !(c->ecx & 0xff00)) { |
562 | 486bd5a2 | aliguori | break;
|
563 | b9bec74b | Jan Kiszka | } |
564 | b9bec74b | Jan Kiszka | if (i == 0xd && c->eax == 0) { |
565 | 486bd5a2 | aliguori | break;
|
566 | b9bec74b | Jan Kiszka | } |
567 | a33609ca | aliguori | c = &cpuid_data.entries[cpuid_i++]; |
568 | 486bd5a2 | aliguori | } |
569 | 486bd5a2 | aliguori | break;
|
570 | 486bd5a2 | aliguori | default:
|
571 | 486bd5a2 | aliguori | c->function = i; |
572 | a33609ca | aliguori | c->flags = 0;
|
573 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
|
574 | 486bd5a2 | aliguori | break;
|
575 | 486bd5a2 | aliguori | } |
576 | 05330448 | aliguori | } |
577 | a33609ca | aliguori | cpu_x86_cpuid(env, 0x80000000, 0, &limit, &unused, &unused, &unused); |
578 | 05330448 | aliguori | |
579 | 05330448 | aliguori | for (i = 0x80000000; i <= limit; i++) { |
580 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
581 | 05330448 | aliguori | |
582 | 05330448 | aliguori | c->function = i; |
583 | a33609ca | aliguori | c->flags = 0;
|
584 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
|
585 | 05330448 | aliguori | } |
586 | 05330448 | aliguori | |
587 | 05330448 | aliguori | cpuid_data.cpuid.nent = cpuid_i; |
588 | 05330448 | aliguori | |
589 | e7701825 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
590 | e7701825 | Marcelo Tosatti | if (((env->cpuid_version >> 8)&0xF) >= 6 |
591 | e7701825 | Marcelo Tosatti | && (env->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA) |
592 | e7701825 | Marcelo Tosatti | && kvm_check_extension(env->kvm_state, KVM_CAP_MCE) > 0) {
|
593 | e7701825 | Marcelo Tosatti | uint64_t mcg_cap; |
594 | e7701825 | Marcelo Tosatti | int banks;
|
595 | e7701825 | Marcelo Tosatti | |
596 | b9bec74b | Jan Kiszka | if (kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks)) {
|
597 | e7701825 | Marcelo Tosatti | perror("kvm_get_mce_cap_supported FAILED");
|
598 | b9bec74b | Jan Kiszka | } else {
|
599 | e7701825 | Marcelo Tosatti | if (banks > MCE_BANKS_DEF)
|
600 | e7701825 | Marcelo Tosatti | banks = MCE_BANKS_DEF; |
601 | e7701825 | Marcelo Tosatti | mcg_cap &= MCE_CAP_DEF; |
602 | e7701825 | Marcelo Tosatti | mcg_cap |= banks; |
603 | b9bec74b | Jan Kiszka | if (kvm_setup_mce(env, &mcg_cap)) {
|
604 | e7701825 | Marcelo Tosatti | perror("kvm_setup_mce FAILED");
|
605 | b9bec74b | Jan Kiszka | } else {
|
606 | e7701825 | Marcelo Tosatti | env->mcg_cap = mcg_cap; |
607 | b9bec74b | Jan Kiszka | } |
608 | e7701825 | Marcelo Tosatti | } |
609 | e7701825 | Marcelo Tosatti | } |
610 | e7701825 | Marcelo Tosatti | #endif
|
611 | e7701825 | Marcelo Tosatti | |
612 | b8cc45d6 | Glauber Costa | qemu_add_vm_change_state_handler(cpu_update_state, env); |
613 | b8cc45d6 | Glauber Costa | |
614 | 486bd5a2 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data);
|
615 | 05330448 | aliguori | } |
616 | 05330448 | aliguori | |
617 | caa5af0f | Jan Kiszka | void kvm_arch_reset_vcpu(CPUState *env)
|
618 | caa5af0f | Jan Kiszka | { |
619 | e73223a5 | Gleb Natapov | env->exception_injected = -1;
|
620 | 0e607a80 | Jan Kiszka | env->interrupt_injected = -1;
|
621 | 1a5e9d2f | Jan Kiszka | env->xcr0 = 1;
|
622 | ddced198 | Marcelo Tosatti | if (kvm_irqchip_in_kernel()) {
|
623 | ddced198 | Marcelo Tosatti | env->mp_state = cpu_is_bsp(env) ? KVM_MP_STATE_RUNNABLE : |
624 | ddced198 | Marcelo Tosatti | KVM_MP_STATE_UNINITIALIZED; |
625 | ddced198 | Marcelo Tosatti | } else {
|
626 | ddced198 | Marcelo Tosatti | env->mp_state = KVM_MP_STATE_RUNNABLE; |
627 | ddced198 | Marcelo Tosatti | } |
628 | caa5af0f | Jan Kiszka | } |
629 | caa5af0f | Jan Kiszka | |
630 | c3a3a7d3 | Jan Kiszka | static int kvm_get_supported_msrs(KVMState *s) |
631 | 05330448 | aliguori | { |
632 | 75b10c43 | Marcelo Tosatti | static int kvm_supported_msrs; |
633 | c3a3a7d3 | Jan Kiszka | int ret = 0; |
634 | 05330448 | aliguori | |
635 | 05330448 | aliguori | /* first time */
|
636 | 75b10c43 | Marcelo Tosatti | if (kvm_supported_msrs == 0) { |
637 | 05330448 | aliguori | struct kvm_msr_list msr_list, *kvm_msr_list;
|
638 | 05330448 | aliguori | |
639 | 75b10c43 | Marcelo Tosatti | kvm_supported_msrs = -1;
|
640 | 05330448 | aliguori | |
641 | 05330448 | aliguori | /* Obtain MSR list from KVM. These are the MSRs that we must
|
642 | 05330448 | aliguori | * save/restore */
|
643 | 4c9f7372 | aliguori | msr_list.nmsrs = 0;
|
644 | c3a3a7d3 | Jan Kiszka | ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, &msr_list); |
645 | 6fb6d245 | Jan Kiszka | if (ret < 0 && ret != -E2BIG) { |
646 | c3a3a7d3 | Jan Kiszka | return ret;
|
647 | 6fb6d245 | Jan Kiszka | } |
648 | d9db889f | Jan Kiszka | /* Old kernel modules had a bug and could write beyond the provided
|
649 | d9db889f | Jan Kiszka | memory. Allocate at least a safe amount of 1K. */
|
650 | d9db889f | Jan Kiszka | kvm_msr_list = qemu_mallocz(MAX(1024, sizeof(msr_list) + |
651 | d9db889f | Jan Kiszka | msr_list.nmsrs * |
652 | d9db889f | Jan Kiszka | sizeof(msr_list.indices[0]))); |
653 | 05330448 | aliguori | |
654 | 55308450 | aliguori | kvm_msr_list->nmsrs = msr_list.nmsrs; |
655 | c3a3a7d3 | Jan Kiszka | ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); |
656 | 05330448 | aliguori | if (ret >= 0) { |
657 | 05330448 | aliguori | int i;
|
658 | 05330448 | aliguori | |
659 | 05330448 | aliguori | for (i = 0; i < kvm_msr_list->nmsrs; i++) { |
660 | 05330448 | aliguori | if (kvm_msr_list->indices[i] == MSR_STAR) {
|
661 | c3a3a7d3 | Jan Kiszka | has_msr_star = true;
|
662 | 75b10c43 | Marcelo Tosatti | continue;
|
663 | 75b10c43 | Marcelo Tosatti | } |
664 | 75b10c43 | Marcelo Tosatti | if (kvm_msr_list->indices[i] == MSR_VM_HSAVE_PA) {
|
665 | c3a3a7d3 | Jan Kiszka | has_msr_hsave_pa = true;
|
666 | 75b10c43 | Marcelo Tosatti | continue;
|
667 | 05330448 | aliguori | } |
668 | 05330448 | aliguori | } |
669 | 05330448 | aliguori | } |
670 | 05330448 | aliguori | |
671 | 05330448 | aliguori | free(kvm_msr_list); |
672 | 05330448 | aliguori | } |
673 | 05330448 | aliguori | |
674 | c3a3a7d3 | Jan Kiszka | return ret;
|
675 | 05330448 | aliguori | } |
676 | 05330448 | aliguori | |
677 | cad1e282 | Jan Kiszka | int kvm_arch_init(KVMState *s)
|
678 | 20420430 | Sheng Yang | { |
679 | 11076198 | Jan Kiszka | uint64_t identity_base = 0xfffbc000;
|
680 | 20420430 | Sheng Yang | int ret;
|
681 | 25d2e361 | Marcelo Tosatti | struct utsname utsname;
|
682 | 20420430 | Sheng Yang | |
683 | c3a3a7d3 | Jan Kiszka | ret = kvm_get_supported_msrs(s); |
684 | 20420430 | Sheng Yang | if (ret < 0) { |
685 | 20420430 | Sheng Yang | return ret;
|
686 | 20420430 | Sheng Yang | } |
687 | 25d2e361 | Marcelo Tosatti | |
688 | 25d2e361 | Marcelo Tosatti | uname(&utsname); |
689 | 25d2e361 | Marcelo Tosatti | lm_capable_kernel = strcmp(utsname.machine, "x86_64") == 0; |
690 | 25d2e361 | Marcelo Tosatti | |
691 | 4c5b10b7 | Jes Sorensen | /*
|
692 | 11076198 | Jan Kiszka | * On older Intel CPUs, KVM uses vm86 mode to emulate 16-bit code directly.
|
693 | 11076198 | Jan Kiszka | * In order to use vm86 mode, an EPT identity map and a TSS are needed.
|
694 | 11076198 | Jan Kiszka | * Since these must be part of guest physical memory, we need to allocate
|
695 | 11076198 | Jan Kiszka | * them, both by setting their start addresses in the kernel and by
|
696 | 11076198 | Jan Kiszka | * creating a corresponding e820 entry. We need 4 pages before the BIOS.
|
697 | 11076198 | Jan Kiszka | *
|
698 | 11076198 | Jan Kiszka | * Older KVM versions may not support setting the identity map base. In
|
699 | 11076198 | Jan Kiszka | * that case we need to stick with the default, i.e. a 256K maximum BIOS
|
700 | 11076198 | Jan Kiszka | * size.
|
701 | 4c5b10b7 | Jes Sorensen | */
|
702 | 11076198 | Jan Kiszka | #ifdef KVM_CAP_SET_IDENTITY_MAP_ADDR
|
703 | 11076198 | Jan Kiszka | if (kvm_check_extension(s, KVM_CAP_SET_IDENTITY_MAP_ADDR)) {
|
704 | 11076198 | Jan Kiszka | /* Allows up to 16M BIOSes. */
|
705 | 11076198 | Jan Kiszka | identity_base = 0xfeffc000;
|
706 | 11076198 | Jan Kiszka | |
707 | 11076198 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_IDENTITY_MAP_ADDR, &identity_base); |
708 | 11076198 | Jan Kiszka | if (ret < 0) { |
709 | 11076198 | Jan Kiszka | return ret;
|
710 | 11076198 | Jan Kiszka | } |
711 | 4c5b10b7 | Jes Sorensen | } |
712 | 11076198 | Jan Kiszka | #endif
|
713 | 11076198 | Jan Kiszka | /* Set TSS base one page after EPT identity map. */
|
714 | 11076198 | Jan Kiszka | ret = kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, identity_base + 0x1000);
|
715 | 20420430 | Sheng Yang | if (ret < 0) { |
716 | 20420430 | Sheng Yang | return ret;
|
717 | 20420430 | Sheng Yang | } |
718 | 20420430 | Sheng Yang | |
719 | 11076198 | Jan Kiszka | /* Tell fw_cfg to notify the BIOS to reserve the range. */
|
720 | 11076198 | Jan Kiszka | ret = e820_add_entry(identity_base, 0x4000, E820_RESERVED);
|
721 | 20420430 | Sheng Yang | if (ret < 0) { |
722 | 11076198 | Jan Kiszka | fprintf(stderr, "e820_add_entry() table is full\n");
|
723 | 20420430 | Sheng Yang | return ret;
|
724 | 20420430 | Sheng Yang | } |
725 | 20420430 | Sheng Yang | |
726 | 11076198 | Jan Kiszka | return 0; |
727 | 05330448 | aliguori | } |
728 | b9bec74b | Jan Kiszka | |
729 | 05330448 | aliguori | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
730 | 05330448 | aliguori | { |
731 | 05330448 | aliguori | lhs->selector = rhs->selector; |
732 | 05330448 | aliguori | lhs->base = rhs->base; |
733 | 05330448 | aliguori | lhs->limit = rhs->limit; |
734 | 05330448 | aliguori | lhs->type = 3;
|
735 | 05330448 | aliguori | lhs->present = 1;
|
736 | 05330448 | aliguori | lhs->dpl = 3;
|
737 | 05330448 | aliguori | lhs->db = 0;
|
738 | 05330448 | aliguori | lhs->s = 1;
|
739 | 05330448 | aliguori | lhs->l = 0;
|
740 | 05330448 | aliguori | lhs->g = 0;
|
741 | 05330448 | aliguori | lhs->avl = 0;
|
742 | 05330448 | aliguori | lhs->unusable = 0;
|
743 | 05330448 | aliguori | } |
744 | 05330448 | aliguori | |
745 | 05330448 | aliguori | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
746 | 05330448 | aliguori | { |
747 | 05330448 | aliguori | unsigned flags = rhs->flags;
|
748 | 05330448 | aliguori | lhs->selector = rhs->selector; |
749 | 05330448 | aliguori | lhs->base = rhs->base; |
750 | 05330448 | aliguori | lhs->limit = rhs->limit; |
751 | 05330448 | aliguori | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
|
752 | 05330448 | aliguori | lhs->present = (flags & DESC_P_MASK) != 0;
|
753 | acaa7550 | Jan Kiszka | lhs->dpl = (flags >> DESC_DPL_SHIFT) & 3;
|
754 | 05330448 | aliguori | lhs->db = (flags >> DESC_B_SHIFT) & 1;
|
755 | 05330448 | aliguori | lhs->s = (flags & DESC_S_MASK) != 0;
|
756 | 05330448 | aliguori | lhs->l = (flags >> DESC_L_SHIFT) & 1;
|
757 | 05330448 | aliguori | lhs->g = (flags & DESC_G_MASK) != 0;
|
758 | 05330448 | aliguori | lhs->avl = (flags & DESC_AVL_MASK) != 0;
|
759 | 05330448 | aliguori | lhs->unusable = 0;
|
760 | 05330448 | aliguori | } |
761 | 05330448 | aliguori | |
762 | 05330448 | aliguori | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) |
763 | 05330448 | aliguori | { |
764 | 05330448 | aliguori | lhs->selector = rhs->selector; |
765 | 05330448 | aliguori | lhs->base = rhs->base; |
766 | 05330448 | aliguori | lhs->limit = rhs->limit; |
767 | b9bec74b | Jan Kiszka | lhs->flags = (rhs->type << DESC_TYPE_SHIFT) | |
768 | b9bec74b | Jan Kiszka | (rhs->present * DESC_P_MASK) | |
769 | b9bec74b | Jan Kiszka | (rhs->dpl << DESC_DPL_SHIFT) | |
770 | b9bec74b | Jan Kiszka | (rhs->db << DESC_B_SHIFT) | |
771 | b9bec74b | Jan Kiszka | (rhs->s * DESC_S_MASK) | |
772 | b9bec74b | Jan Kiszka | (rhs->l << DESC_L_SHIFT) | |
773 | b9bec74b | Jan Kiszka | (rhs->g * DESC_G_MASK) | |
774 | b9bec74b | Jan Kiszka | (rhs->avl * DESC_AVL_MASK); |
775 | 05330448 | aliguori | } |
776 | 05330448 | aliguori | |
777 | 05330448 | aliguori | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) |
778 | 05330448 | aliguori | { |
779 | b9bec74b | Jan Kiszka | if (set) {
|
780 | 05330448 | aliguori | *kvm_reg = *qemu_reg; |
781 | b9bec74b | Jan Kiszka | } else {
|
782 | 05330448 | aliguori | *qemu_reg = *kvm_reg; |
783 | b9bec74b | Jan Kiszka | } |
784 | 05330448 | aliguori | } |
785 | 05330448 | aliguori | |
786 | 05330448 | aliguori | static int kvm_getput_regs(CPUState *env, int set) |
787 | 05330448 | aliguori | { |
788 | 05330448 | aliguori | struct kvm_regs regs;
|
789 | 05330448 | aliguori | int ret = 0; |
790 | 05330448 | aliguori | |
791 | 05330448 | aliguori | if (!set) {
|
792 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
793 | b9bec74b | Jan Kiszka | if (ret < 0) { |
794 | 05330448 | aliguori | return ret;
|
795 | b9bec74b | Jan Kiszka | } |
796 | 05330448 | aliguori | } |
797 | 05330448 | aliguori | |
798 | 05330448 | aliguori | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); |
799 | 05330448 | aliguori | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); |
800 | 05330448 | aliguori | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); |
801 | 05330448 | aliguori | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); |
802 | 05330448 | aliguori | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); |
803 | 05330448 | aliguori | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); |
804 | 05330448 | aliguori | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); |
805 | 05330448 | aliguori | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); |
806 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
807 | 05330448 | aliguori | kvm_getput_reg(®s.r8, &env->regs[8], set);
|
808 | 05330448 | aliguori | kvm_getput_reg(®s.r9, &env->regs[9], set);
|
809 | 05330448 | aliguori | kvm_getput_reg(®s.r10, &env->regs[10], set);
|
810 | 05330448 | aliguori | kvm_getput_reg(®s.r11, &env->regs[11], set);
|
811 | 05330448 | aliguori | kvm_getput_reg(®s.r12, &env->regs[12], set);
|
812 | 05330448 | aliguori | kvm_getput_reg(®s.r13, &env->regs[13], set);
|
813 | 05330448 | aliguori | kvm_getput_reg(®s.r14, &env->regs[14], set);
|
814 | 05330448 | aliguori | kvm_getput_reg(®s.r15, &env->regs[15], set);
|
815 | 05330448 | aliguori | #endif
|
816 | 05330448 | aliguori | |
817 | 05330448 | aliguori | kvm_getput_reg(®s.rflags, &env->eflags, set); |
818 | 05330448 | aliguori | kvm_getput_reg(®s.rip, &env->eip, set); |
819 | 05330448 | aliguori | |
820 | b9bec74b | Jan Kiszka | if (set) {
|
821 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
822 | b9bec74b | Jan Kiszka | } |
823 | 05330448 | aliguori | |
824 | 05330448 | aliguori | return ret;
|
825 | 05330448 | aliguori | } |
826 | 05330448 | aliguori | |
827 | 05330448 | aliguori | static int kvm_put_fpu(CPUState *env) |
828 | 05330448 | aliguori | { |
829 | 05330448 | aliguori | struct kvm_fpu fpu;
|
830 | 05330448 | aliguori | int i;
|
831 | 05330448 | aliguori | |
832 | 05330448 | aliguori | memset(&fpu, 0, sizeof fpu); |
833 | 05330448 | aliguori | fpu.fsw = env->fpus & ~(7 << 11); |
834 | 05330448 | aliguori | fpu.fsw |= (env->fpstt & 7) << 11; |
835 | 05330448 | aliguori | fpu.fcw = env->fpuc; |
836 | b9bec74b | Jan Kiszka | for (i = 0; i < 8; ++i) { |
837 | b9bec74b | Jan Kiszka | fpu.ftwx |= (!env->fptags[i]) << i; |
838 | b9bec74b | Jan Kiszka | } |
839 | 05330448 | aliguori | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs);
|
840 | 05330448 | aliguori | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs);
|
841 | 05330448 | aliguori | fpu.mxcsr = env->mxcsr; |
842 | 05330448 | aliguori | |
843 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
|
844 | 05330448 | aliguori | } |
845 | 05330448 | aliguori | |
846 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
847 | f1665b21 | Sheng Yang | #define XSAVE_CWD_RIP 2 |
848 | f1665b21 | Sheng Yang | #define XSAVE_CWD_RDP 4 |
849 | f1665b21 | Sheng Yang | #define XSAVE_MXCSR 6 |
850 | f1665b21 | Sheng Yang | #define XSAVE_ST_SPACE 8 |
851 | f1665b21 | Sheng Yang | #define XSAVE_XMM_SPACE 40 |
852 | f1665b21 | Sheng Yang | #define XSAVE_XSTATE_BV 128 |
853 | f1665b21 | Sheng Yang | #define XSAVE_YMMH_SPACE 144 |
854 | f1665b21 | Sheng Yang | #endif
|
855 | f1665b21 | Sheng Yang | |
856 | f1665b21 | Sheng Yang | static int kvm_put_xsave(CPUState *env) |
857 | f1665b21 | Sheng Yang | { |
858 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
859 | 0f53994f | Marcelo Tosatti | int i, r;
|
860 | f1665b21 | Sheng Yang | struct kvm_xsave* xsave;
|
861 | f1665b21 | Sheng Yang | uint16_t cwd, swd, twd, fop; |
862 | f1665b21 | Sheng Yang | |
863 | b9bec74b | Jan Kiszka | if (!kvm_has_xsave()) {
|
864 | f1665b21 | Sheng Yang | return kvm_put_fpu(env);
|
865 | b9bec74b | Jan Kiszka | } |
866 | f1665b21 | Sheng Yang | |
867 | f1665b21 | Sheng Yang | xsave = qemu_memalign(4096, sizeof(struct kvm_xsave)); |
868 | f1665b21 | Sheng Yang | memset(xsave, 0, sizeof(struct kvm_xsave)); |
869 | f1665b21 | Sheng Yang | cwd = swd = twd = fop = 0;
|
870 | f1665b21 | Sheng Yang | swd = env->fpus & ~(7 << 11); |
871 | f1665b21 | Sheng Yang | swd |= (env->fpstt & 7) << 11; |
872 | f1665b21 | Sheng Yang | cwd = env->fpuc; |
873 | b9bec74b | Jan Kiszka | for (i = 0; i < 8; ++i) { |
874 | f1665b21 | Sheng Yang | twd |= (!env->fptags[i]) << i; |
875 | b9bec74b | Jan Kiszka | } |
876 | f1665b21 | Sheng Yang | xsave->region[0] = (uint32_t)(swd << 16) + cwd; |
877 | f1665b21 | Sheng Yang | xsave->region[1] = (uint32_t)(fop << 16) + twd; |
878 | f1665b21 | Sheng Yang | memcpy(&xsave->region[XSAVE_ST_SPACE], env->fpregs, |
879 | f1665b21 | Sheng Yang | sizeof env->fpregs);
|
880 | f1665b21 | Sheng Yang | memcpy(&xsave->region[XSAVE_XMM_SPACE], env->xmm_regs, |
881 | f1665b21 | Sheng Yang | sizeof env->xmm_regs);
|
882 | f1665b21 | Sheng Yang | xsave->region[XSAVE_MXCSR] = env->mxcsr; |
883 | f1665b21 | Sheng Yang | *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV] = env->xstate_bv; |
884 | f1665b21 | Sheng Yang | memcpy(&xsave->region[XSAVE_YMMH_SPACE], env->ymmh_regs, |
885 | f1665b21 | Sheng Yang | sizeof env->ymmh_regs);
|
886 | 0f53994f | Marcelo Tosatti | r = kvm_vcpu_ioctl(env, KVM_SET_XSAVE, xsave); |
887 | 0f53994f | Marcelo Tosatti | qemu_free(xsave); |
888 | 0f53994f | Marcelo Tosatti | return r;
|
889 | f1665b21 | Sheng Yang | #else
|
890 | f1665b21 | Sheng Yang | return kvm_put_fpu(env);
|
891 | f1665b21 | Sheng Yang | #endif
|
892 | f1665b21 | Sheng Yang | } |
893 | f1665b21 | Sheng Yang | |
894 | f1665b21 | Sheng Yang | static int kvm_put_xcrs(CPUState *env) |
895 | f1665b21 | Sheng Yang | { |
896 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
897 | f1665b21 | Sheng Yang | struct kvm_xcrs xcrs;
|
898 | f1665b21 | Sheng Yang | |
899 | b9bec74b | Jan Kiszka | if (!kvm_has_xcrs()) {
|
900 | f1665b21 | Sheng Yang | return 0; |
901 | b9bec74b | Jan Kiszka | } |
902 | f1665b21 | Sheng Yang | |
903 | f1665b21 | Sheng Yang | xcrs.nr_xcrs = 1;
|
904 | f1665b21 | Sheng Yang | xcrs.flags = 0;
|
905 | f1665b21 | Sheng Yang | xcrs.xcrs[0].xcr = 0; |
906 | f1665b21 | Sheng Yang | xcrs.xcrs[0].value = env->xcr0;
|
907 | f1665b21 | Sheng Yang | return kvm_vcpu_ioctl(env, KVM_SET_XCRS, &xcrs);
|
908 | f1665b21 | Sheng Yang | #else
|
909 | f1665b21 | Sheng Yang | return 0; |
910 | f1665b21 | Sheng Yang | #endif
|
911 | f1665b21 | Sheng Yang | } |
912 | f1665b21 | Sheng Yang | |
913 | 05330448 | aliguori | static int kvm_put_sregs(CPUState *env) |
914 | 05330448 | aliguori | { |
915 | 05330448 | aliguori | struct kvm_sregs sregs;
|
916 | 05330448 | aliguori | |
917 | 0e607a80 | Jan Kiszka | memset(sregs.interrupt_bitmap, 0, sizeof(sregs.interrupt_bitmap)); |
918 | 0e607a80 | Jan Kiszka | if (env->interrupt_injected >= 0) { |
919 | 0e607a80 | Jan Kiszka | sregs.interrupt_bitmap[env->interrupt_injected / 64] |=
|
920 | 0e607a80 | Jan Kiszka | (uint64_t)1 << (env->interrupt_injected % 64); |
921 | 0e607a80 | Jan Kiszka | } |
922 | 05330448 | aliguori | |
923 | 05330448 | aliguori | if ((env->eflags & VM_MASK)) {
|
924 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
925 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); |
926 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.es, &env->segs[R_ES]); |
927 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); |
928 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); |
929 | b9bec74b | Jan Kiszka | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); |
930 | 05330448 | aliguori | } else {
|
931 | b9bec74b | Jan Kiszka | set_seg(&sregs.cs, &env->segs[R_CS]); |
932 | b9bec74b | Jan Kiszka | set_seg(&sregs.ds, &env->segs[R_DS]); |
933 | b9bec74b | Jan Kiszka | set_seg(&sregs.es, &env->segs[R_ES]); |
934 | b9bec74b | Jan Kiszka | set_seg(&sregs.fs, &env->segs[R_FS]); |
935 | b9bec74b | Jan Kiszka | set_seg(&sregs.gs, &env->segs[R_GS]); |
936 | b9bec74b | Jan Kiszka | set_seg(&sregs.ss, &env->segs[R_SS]); |
937 | 05330448 | aliguori | } |
938 | 05330448 | aliguori | |
939 | 05330448 | aliguori | set_seg(&sregs.tr, &env->tr); |
940 | 05330448 | aliguori | set_seg(&sregs.ldt, &env->ldt); |
941 | 05330448 | aliguori | |
942 | 05330448 | aliguori | sregs.idt.limit = env->idt.limit; |
943 | 05330448 | aliguori | sregs.idt.base = env->idt.base; |
944 | 05330448 | aliguori | sregs.gdt.limit = env->gdt.limit; |
945 | 05330448 | aliguori | sregs.gdt.base = env->gdt.base; |
946 | 05330448 | aliguori | |
947 | 05330448 | aliguori | sregs.cr0 = env->cr[0];
|
948 | 05330448 | aliguori | sregs.cr2 = env->cr[2];
|
949 | 05330448 | aliguori | sregs.cr3 = env->cr[3];
|
950 | 05330448 | aliguori | sregs.cr4 = env->cr[4];
|
951 | 05330448 | aliguori | |
952 | 4a942cea | Blue Swirl | sregs.cr8 = cpu_get_apic_tpr(env->apic_state); |
953 | 4a942cea | Blue Swirl | sregs.apic_base = cpu_get_apic_base(env->apic_state); |
954 | 05330448 | aliguori | |
955 | 05330448 | aliguori | sregs.efer = env->efer; |
956 | 05330448 | aliguori | |
957 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
|
958 | 05330448 | aliguori | } |
959 | 05330448 | aliguori | |
960 | 05330448 | aliguori | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, |
961 | 05330448 | aliguori | uint32_t index, uint64_t value) |
962 | 05330448 | aliguori | { |
963 | 05330448 | aliguori | entry->index = index; |
964 | 05330448 | aliguori | entry->data = value; |
965 | 05330448 | aliguori | } |
966 | 05330448 | aliguori | |
967 | ea643051 | Jan Kiszka | static int kvm_put_msrs(CPUState *env, int level) |
968 | 05330448 | aliguori | { |
969 | 05330448 | aliguori | struct {
|
970 | 05330448 | aliguori | struct kvm_msrs info;
|
971 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
972 | 05330448 | aliguori | } msr_data; |
973 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
974 | d8da8574 | Hidetoshi Seto | int n = 0; |
975 | 05330448 | aliguori | |
976 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); |
977 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); |
978 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); |
979 | c3a3a7d3 | Jan Kiszka | if (has_msr_star) {
|
980 | b9bec74b | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
981 | b9bec74b | Jan Kiszka | } |
982 | c3a3a7d3 | Jan Kiszka | if (has_msr_hsave_pa) {
|
983 | 75b10c43 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_VM_HSAVE_PA, env->vm_hsave); |
984 | b9bec74b | Jan Kiszka | } |
985 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
986 | 25d2e361 | Marcelo Tosatti | if (lm_capable_kernel) {
|
987 | 25d2e361 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); |
988 | 25d2e361 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); |
989 | 25d2e361 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); |
990 | 25d2e361 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); |
991 | 25d2e361 | Marcelo Tosatti | } |
992 | 05330448 | aliguori | #endif
|
993 | ea643051 | Jan Kiszka | if (level == KVM_PUT_FULL_STATE) {
|
994 | 384331a6 | Marcelo Tosatti | /*
|
995 | 384331a6 | Marcelo Tosatti | * KVM is yet unable to synchronize TSC values of multiple VCPUs on
|
996 | 384331a6 | Marcelo Tosatti | * writeback. Until this is fixed, we only write the offset to SMP
|
997 | 384331a6 | Marcelo Tosatti | * guests after migration, desynchronizing the VCPUs, but avoiding
|
998 | 384331a6 | Marcelo Tosatti | * huge jump-backs that would occur without any writeback at all.
|
999 | 384331a6 | Marcelo Tosatti | */
|
1000 | 384331a6 | Marcelo Tosatti | if (smp_cpus == 1 || env->tsc != 0) { |
1001 | 384331a6 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); |
1002 | 384331a6 | Marcelo Tosatti | } |
1003 | ff5c186b | Jan Kiszka | } |
1004 | ff5c186b | Jan Kiszka | /*
|
1005 | ff5c186b | Jan Kiszka | * The following paravirtual MSRs have side effects on the guest or are
|
1006 | ff5c186b | Jan Kiszka | * too heavy for normal writeback. Limit them to reset or full state
|
1007 | ff5c186b | Jan Kiszka | * updates.
|
1008 | ff5c186b | Jan Kiszka | */
|
1009 | ff5c186b | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
1010 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_SYSTEM_TIME, |
1011 | ea643051 | Jan Kiszka | env->system_time_msr); |
1012 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_WALL_CLOCK, env->wall_clock_msr); |
1013 | 521f0798 | Jan Kiszka | #if defined(CONFIG_KVM_PARA) && defined(KVM_CAP_ASYNC_PF)
|
1014 | c5999bfc | Jan Kiszka | if (has_msr_async_pf_en) {
|
1015 | c5999bfc | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_ASYNC_PF_EN, |
1016 | c5999bfc | Jan Kiszka | env->async_pf_en_msr); |
1017 | c5999bfc | Jan Kiszka | } |
1018 | f6584ee2 | Gleb Natapov | #endif
|
1019 | ea643051 | Jan Kiszka | } |
1020 | 57780495 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
1021 | 57780495 | Marcelo Tosatti | if (env->mcg_cap) {
|
1022 | d8da8574 | Hidetoshi Seto | int i;
|
1023 | b9bec74b | Jan Kiszka | |
1024 | b9bec74b | Jan Kiszka | if (level == KVM_PUT_RESET_STATE) {
|
1025 | 57780495 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); |
1026 | b9bec74b | Jan Kiszka | } else if (level == KVM_PUT_FULL_STATE) { |
1027 | 57780495 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); |
1028 | 57780495 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl); |
1029 | b9bec74b | Jan Kiszka | for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { |
1030 | 57780495 | Marcelo Tosatti | kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]); |
1031 | b9bec74b | Jan Kiszka | } |
1032 | 57780495 | Marcelo Tosatti | } |
1033 | 57780495 | Marcelo Tosatti | } |
1034 | 57780495 | Marcelo Tosatti | #endif
|
1035 | 1a03675d | Glauber Costa | |
1036 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
1037 | 05330448 | aliguori | |
1038 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data);
|
1039 | 05330448 | aliguori | |
1040 | 05330448 | aliguori | } |
1041 | 05330448 | aliguori | |
1042 | 05330448 | aliguori | |
1043 | 05330448 | aliguori | static int kvm_get_fpu(CPUState *env) |
1044 | 05330448 | aliguori | { |
1045 | 05330448 | aliguori | struct kvm_fpu fpu;
|
1046 | 05330448 | aliguori | int i, ret;
|
1047 | 05330448 | aliguori | |
1048 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); |
1049 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1050 | 05330448 | aliguori | return ret;
|
1051 | b9bec74b | Jan Kiszka | } |
1052 | 05330448 | aliguori | |
1053 | 05330448 | aliguori | env->fpstt = (fpu.fsw >> 11) & 7; |
1054 | 05330448 | aliguori | env->fpus = fpu.fsw; |
1055 | 05330448 | aliguori | env->fpuc = fpu.fcw; |
1056 | b9bec74b | Jan Kiszka | for (i = 0; i < 8; ++i) { |
1057 | b9bec74b | Jan Kiszka | env->fptags[i] = !((fpu.ftwx >> i) & 1);
|
1058 | b9bec74b | Jan Kiszka | } |
1059 | 05330448 | aliguori | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs);
|
1060 | 05330448 | aliguori | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs);
|
1061 | 05330448 | aliguori | env->mxcsr = fpu.mxcsr; |
1062 | 05330448 | aliguori | |
1063 | 05330448 | aliguori | return 0; |
1064 | 05330448 | aliguori | } |
1065 | 05330448 | aliguori | |
1066 | f1665b21 | Sheng Yang | static int kvm_get_xsave(CPUState *env) |
1067 | f1665b21 | Sheng Yang | { |
1068 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XSAVE
|
1069 | f1665b21 | Sheng Yang | struct kvm_xsave* xsave;
|
1070 | f1665b21 | Sheng Yang | int ret, i;
|
1071 | f1665b21 | Sheng Yang | uint16_t cwd, swd, twd, fop; |
1072 | f1665b21 | Sheng Yang | |
1073 | b9bec74b | Jan Kiszka | if (!kvm_has_xsave()) {
|
1074 | f1665b21 | Sheng Yang | return kvm_get_fpu(env);
|
1075 | b9bec74b | Jan Kiszka | } |
1076 | f1665b21 | Sheng Yang | |
1077 | f1665b21 | Sheng Yang | xsave = qemu_memalign(4096, sizeof(struct kvm_xsave)); |
1078 | f1665b21 | Sheng Yang | ret = kvm_vcpu_ioctl(env, KVM_GET_XSAVE, xsave); |
1079 | 0f53994f | Marcelo Tosatti | if (ret < 0) { |
1080 | 0f53994f | Marcelo Tosatti | qemu_free(xsave); |
1081 | f1665b21 | Sheng Yang | return ret;
|
1082 | 0f53994f | Marcelo Tosatti | } |
1083 | f1665b21 | Sheng Yang | |
1084 | f1665b21 | Sheng Yang | cwd = (uint16_t)xsave->region[0];
|
1085 | f1665b21 | Sheng Yang | swd = (uint16_t)(xsave->region[0] >> 16); |
1086 | f1665b21 | Sheng Yang | twd = (uint16_t)xsave->region[1];
|
1087 | f1665b21 | Sheng Yang | fop = (uint16_t)(xsave->region[1] >> 16); |
1088 | f1665b21 | Sheng Yang | env->fpstt = (swd >> 11) & 7; |
1089 | f1665b21 | Sheng Yang | env->fpus = swd; |
1090 | f1665b21 | Sheng Yang | env->fpuc = cwd; |
1091 | b9bec74b | Jan Kiszka | for (i = 0; i < 8; ++i) { |
1092 | f1665b21 | Sheng Yang | env->fptags[i] = !((twd >> i) & 1);
|
1093 | b9bec74b | Jan Kiszka | } |
1094 | f1665b21 | Sheng Yang | env->mxcsr = xsave->region[XSAVE_MXCSR]; |
1095 | f1665b21 | Sheng Yang | memcpy(env->fpregs, &xsave->region[XSAVE_ST_SPACE], |
1096 | f1665b21 | Sheng Yang | sizeof env->fpregs);
|
1097 | f1665b21 | Sheng Yang | memcpy(env->xmm_regs, &xsave->region[XSAVE_XMM_SPACE], |
1098 | f1665b21 | Sheng Yang | sizeof env->xmm_regs);
|
1099 | f1665b21 | Sheng Yang | env->xstate_bv = *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV]; |
1100 | f1665b21 | Sheng Yang | memcpy(env->ymmh_regs, &xsave->region[XSAVE_YMMH_SPACE], |
1101 | f1665b21 | Sheng Yang | sizeof env->ymmh_regs);
|
1102 | 0f53994f | Marcelo Tosatti | qemu_free(xsave); |
1103 | f1665b21 | Sheng Yang | return 0; |
1104 | f1665b21 | Sheng Yang | #else
|
1105 | f1665b21 | Sheng Yang | return kvm_get_fpu(env);
|
1106 | f1665b21 | Sheng Yang | #endif
|
1107 | f1665b21 | Sheng Yang | } |
1108 | f1665b21 | Sheng Yang | |
1109 | f1665b21 | Sheng Yang | static int kvm_get_xcrs(CPUState *env) |
1110 | f1665b21 | Sheng Yang | { |
1111 | f1665b21 | Sheng Yang | #ifdef KVM_CAP_XCRS
|
1112 | f1665b21 | Sheng Yang | int i, ret;
|
1113 | f1665b21 | Sheng Yang | struct kvm_xcrs xcrs;
|
1114 | f1665b21 | Sheng Yang | |
1115 | b9bec74b | Jan Kiszka | if (!kvm_has_xcrs()) {
|
1116 | f1665b21 | Sheng Yang | return 0; |
1117 | b9bec74b | Jan Kiszka | } |
1118 | f1665b21 | Sheng Yang | |
1119 | f1665b21 | Sheng Yang | ret = kvm_vcpu_ioctl(env, KVM_GET_XCRS, &xcrs); |
1120 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1121 | f1665b21 | Sheng Yang | return ret;
|
1122 | b9bec74b | Jan Kiszka | } |
1123 | f1665b21 | Sheng Yang | |
1124 | b9bec74b | Jan Kiszka | for (i = 0; i < xcrs.nr_xcrs; i++) { |
1125 | f1665b21 | Sheng Yang | /* Only support xcr0 now */
|
1126 | f1665b21 | Sheng Yang | if (xcrs.xcrs[0].xcr == 0) { |
1127 | f1665b21 | Sheng Yang | env->xcr0 = xcrs.xcrs[0].value;
|
1128 | f1665b21 | Sheng Yang | break;
|
1129 | f1665b21 | Sheng Yang | } |
1130 | b9bec74b | Jan Kiszka | } |
1131 | f1665b21 | Sheng Yang | return 0; |
1132 | f1665b21 | Sheng Yang | #else
|
1133 | f1665b21 | Sheng Yang | return 0; |
1134 | f1665b21 | Sheng Yang | #endif
|
1135 | f1665b21 | Sheng Yang | } |
1136 | f1665b21 | Sheng Yang | |
1137 | 05330448 | aliguori | static int kvm_get_sregs(CPUState *env) |
1138 | 05330448 | aliguori | { |
1139 | 05330448 | aliguori | struct kvm_sregs sregs;
|
1140 | 05330448 | aliguori | uint32_t hflags; |
1141 | 0e607a80 | Jan Kiszka | int bit, i, ret;
|
1142 | 05330448 | aliguori | |
1143 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
1144 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1145 | 05330448 | aliguori | return ret;
|
1146 | b9bec74b | Jan Kiszka | } |
1147 | 05330448 | aliguori | |
1148 | 0e607a80 | Jan Kiszka | /* There can only be one pending IRQ set in the bitmap at a time, so try
|
1149 | 0e607a80 | Jan Kiszka | to find it and save its number instead (-1 for none). */
|
1150 | 0e607a80 | Jan Kiszka | env->interrupt_injected = -1;
|
1151 | 0e607a80 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(sregs.interrupt_bitmap); i++) { |
1152 | 0e607a80 | Jan Kiszka | if (sregs.interrupt_bitmap[i]) {
|
1153 | 0e607a80 | Jan Kiszka | bit = ctz64(sregs.interrupt_bitmap[i]); |
1154 | 0e607a80 | Jan Kiszka | env->interrupt_injected = i * 64 + bit;
|
1155 | 0e607a80 | Jan Kiszka | break;
|
1156 | 0e607a80 | Jan Kiszka | } |
1157 | 0e607a80 | Jan Kiszka | } |
1158 | 05330448 | aliguori | |
1159 | 05330448 | aliguori | get_seg(&env->segs[R_CS], &sregs.cs); |
1160 | 05330448 | aliguori | get_seg(&env->segs[R_DS], &sregs.ds); |
1161 | 05330448 | aliguori | get_seg(&env->segs[R_ES], &sregs.es); |
1162 | 05330448 | aliguori | get_seg(&env->segs[R_FS], &sregs.fs); |
1163 | 05330448 | aliguori | get_seg(&env->segs[R_GS], &sregs.gs); |
1164 | 05330448 | aliguori | get_seg(&env->segs[R_SS], &sregs.ss); |
1165 | 05330448 | aliguori | |
1166 | 05330448 | aliguori | get_seg(&env->tr, &sregs.tr); |
1167 | 05330448 | aliguori | get_seg(&env->ldt, &sregs.ldt); |
1168 | 05330448 | aliguori | |
1169 | 05330448 | aliguori | env->idt.limit = sregs.idt.limit; |
1170 | 05330448 | aliguori | env->idt.base = sregs.idt.base; |
1171 | 05330448 | aliguori | env->gdt.limit = sregs.gdt.limit; |
1172 | 05330448 | aliguori | env->gdt.base = sregs.gdt.base; |
1173 | 05330448 | aliguori | |
1174 | 05330448 | aliguori | env->cr[0] = sregs.cr0;
|
1175 | 05330448 | aliguori | env->cr[2] = sregs.cr2;
|
1176 | 05330448 | aliguori | env->cr[3] = sregs.cr3;
|
1177 | 05330448 | aliguori | env->cr[4] = sregs.cr4;
|
1178 | 05330448 | aliguori | |
1179 | 4a942cea | Blue Swirl | cpu_set_apic_base(env->apic_state, sregs.apic_base); |
1180 | 05330448 | aliguori | |
1181 | 05330448 | aliguori | env->efer = sregs.efer; |
1182 | 4a942cea | Blue Swirl | //cpu_set_apic_tpr(env->apic_state, sregs.cr8);
|
1183 | 05330448 | aliguori | |
1184 | b9bec74b | Jan Kiszka | #define HFLAG_COPY_MASK \
|
1185 | b9bec74b | Jan Kiszka | ~( HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ |
1186 | b9bec74b | Jan Kiszka | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ |
1187 | b9bec74b | Jan Kiszka | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ |
1188 | b9bec74b | Jan Kiszka | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) |
1189 | 05330448 | aliguori | |
1190 | 05330448 | aliguori | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; |
1191 | 05330448 | aliguori | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT);
|
1192 | 05330448 | aliguori | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) &
|
1193 | b9bec74b | Jan Kiszka | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
1194 | 05330448 | aliguori | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
1195 | 05330448 | aliguori | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) <<
|
1196 | b9bec74b | Jan Kiszka | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
1197 | 05330448 | aliguori | |
1198 | 05330448 | aliguori | if (env->efer & MSR_EFER_LMA) {
|
1199 | 05330448 | aliguori | hflags |= HF_LMA_MASK; |
1200 | 05330448 | aliguori | } |
1201 | 05330448 | aliguori | |
1202 | 05330448 | aliguori | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) {
|
1203 | 05330448 | aliguori | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
1204 | 05330448 | aliguori | } else {
|
1205 | 05330448 | aliguori | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> |
1206 | b9bec74b | Jan Kiszka | (DESC_B_SHIFT - HF_CS32_SHIFT); |
1207 | 05330448 | aliguori | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
1208 | b9bec74b | Jan Kiszka | (DESC_B_SHIFT - HF_SS32_SHIFT); |
1209 | b9bec74b | Jan Kiszka | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK) || |
1210 | b9bec74b | Jan Kiszka | !(hflags & HF_CS32_MASK)) { |
1211 | b9bec74b | Jan Kiszka | hflags |= HF_ADDSEG_MASK; |
1212 | b9bec74b | Jan Kiszka | } else {
|
1213 | b9bec74b | Jan Kiszka | hflags |= ((env->segs[R_DS].base | env->segs[R_ES].base | |
1214 | b9bec74b | Jan Kiszka | env->segs[R_SS].base) != 0) << HF_ADDSEG_SHIFT;
|
1215 | b9bec74b | Jan Kiszka | } |
1216 | 05330448 | aliguori | } |
1217 | 05330448 | aliguori | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; |
1218 | 05330448 | aliguori | |
1219 | 05330448 | aliguori | return 0; |
1220 | 05330448 | aliguori | } |
1221 | 05330448 | aliguori | |
1222 | 05330448 | aliguori | static int kvm_get_msrs(CPUState *env) |
1223 | 05330448 | aliguori | { |
1224 | 05330448 | aliguori | struct {
|
1225 | 05330448 | aliguori | struct kvm_msrs info;
|
1226 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
1227 | 05330448 | aliguori | } msr_data; |
1228 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
1229 | 05330448 | aliguori | int ret, i, n;
|
1230 | 05330448 | aliguori | |
1231 | 05330448 | aliguori | n = 0;
|
1232 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_CS; |
1233 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_ESP; |
1234 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_EIP; |
1235 | c3a3a7d3 | Jan Kiszka | if (has_msr_star) {
|
1236 | b9bec74b | Jan Kiszka | msrs[n++].index = MSR_STAR; |
1237 | b9bec74b | Jan Kiszka | } |
1238 | c3a3a7d3 | Jan Kiszka | if (has_msr_hsave_pa) {
|
1239 | 75b10c43 | Marcelo Tosatti | msrs[n++].index = MSR_VM_HSAVE_PA; |
1240 | b9bec74b | Jan Kiszka | } |
1241 | b8cc45d6 | Glauber Costa | |
1242 | b8cc45d6 | Glauber Costa | if (!env->tsc_valid) {
|
1243 | b8cc45d6 | Glauber Costa | msrs[n++].index = MSR_IA32_TSC; |
1244 | b8cc45d6 | Glauber Costa | env->tsc_valid = !vm_running; |
1245 | b8cc45d6 | Glauber Costa | } |
1246 | b8cc45d6 | Glauber Costa | |
1247 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
1248 | 25d2e361 | Marcelo Tosatti | if (lm_capable_kernel) {
|
1249 | 25d2e361 | Marcelo Tosatti | msrs[n++].index = MSR_CSTAR; |
1250 | 25d2e361 | Marcelo Tosatti | msrs[n++].index = MSR_KERNELGSBASE; |
1251 | 25d2e361 | Marcelo Tosatti | msrs[n++].index = MSR_FMASK; |
1252 | 25d2e361 | Marcelo Tosatti | msrs[n++].index = MSR_LSTAR; |
1253 | 25d2e361 | Marcelo Tosatti | } |
1254 | 05330448 | aliguori | #endif
|
1255 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_SYSTEM_TIME; |
1256 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_WALL_CLOCK; |
1257 | 521f0798 | Jan Kiszka | #if defined(CONFIG_KVM_PARA) && defined(KVM_CAP_ASYNC_PF)
|
1258 | c5999bfc | Jan Kiszka | if (has_msr_async_pf_en) {
|
1259 | c5999bfc | Jan Kiszka | msrs[n++].index = MSR_KVM_ASYNC_PF_EN; |
1260 | c5999bfc | Jan Kiszka | } |
1261 | f6584ee2 | Gleb Natapov | #endif
|
1262 | 1a03675d | Glauber Costa | |
1263 | 57780495 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
1264 | 57780495 | Marcelo Tosatti | if (env->mcg_cap) {
|
1265 | 57780495 | Marcelo Tosatti | msrs[n++].index = MSR_MCG_STATUS; |
1266 | 57780495 | Marcelo Tosatti | msrs[n++].index = MSR_MCG_CTL; |
1267 | b9bec74b | Jan Kiszka | for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { |
1268 | 57780495 | Marcelo Tosatti | msrs[n++].index = MSR_MC0_CTL + i; |
1269 | b9bec74b | Jan Kiszka | } |
1270 | 57780495 | Marcelo Tosatti | } |
1271 | 57780495 | Marcelo Tosatti | #endif
|
1272 | 57780495 | Marcelo Tosatti | |
1273 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
1274 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); |
1275 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1276 | 05330448 | aliguori | return ret;
|
1277 | b9bec74b | Jan Kiszka | } |
1278 | 05330448 | aliguori | |
1279 | 05330448 | aliguori | for (i = 0; i < ret; i++) { |
1280 | 05330448 | aliguori | switch (msrs[i].index) {
|
1281 | 05330448 | aliguori | case MSR_IA32_SYSENTER_CS:
|
1282 | 05330448 | aliguori | env->sysenter_cs = msrs[i].data; |
1283 | 05330448 | aliguori | break;
|
1284 | 05330448 | aliguori | case MSR_IA32_SYSENTER_ESP:
|
1285 | 05330448 | aliguori | env->sysenter_esp = msrs[i].data; |
1286 | 05330448 | aliguori | break;
|
1287 | 05330448 | aliguori | case MSR_IA32_SYSENTER_EIP:
|
1288 | 05330448 | aliguori | env->sysenter_eip = msrs[i].data; |
1289 | 05330448 | aliguori | break;
|
1290 | 05330448 | aliguori | case MSR_STAR:
|
1291 | 05330448 | aliguori | env->star = msrs[i].data; |
1292 | 05330448 | aliguori | break;
|
1293 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
1294 | 05330448 | aliguori | case MSR_CSTAR:
|
1295 | 05330448 | aliguori | env->cstar = msrs[i].data; |
1296 | 05330448 | aliguori | break;
|
1297 | 05330448 | aliguori | case MSR_KERNELGSBASE:
|
1298 | 05330448 | aliguori | env->kernelgsbase = msrs[i].data; |
1299 | 05330448 | aliguori | break;
|
1300 | 05330448 | aliguori | case MSR_FMASK:
|
1301 | 05330448 | aliguori | env->fmask = msrs[i].data; |
1302 | 05330448 | aliguori | break;
|
1303 | 05330448 | aliguori | case MSR_LSTAR:
|
1304 | 05330448 | aliguori | env->lstar = msrs[i].data; |
1305 | 05330448 | aliguori | break;
|
1306 | 05330448 | aliguori | #endif
|
1307 | 05330448 | aliguori | case MSR_IA32_TSC:
|
1308 | 05330448 | aliguori | env->tsc = msrs[i].data; |
1309 | 05330448 | aliguori | break;
|
1310 | aa851e36 | Marcelo Tosatti | case MSR_VM_HSAVE_PA:
|
1311 | aa851e36 | Marcelo Tosatti | env->vm_hsave = msrs[i].data; |
1312 | aa851e36 | Marcelo Tosatti | break;
|
1313 | 1a03675d | Glauber Costa | case MSR_KVM_SYSTEM_TIME:
|
1314 | 1a03675d | Glauber Costa | env->system_time_msr = msrs[i].data; |
1315 | 1a03675d | Glauber Costa | break;
|
1316 | 1a03675d | Glauber Costa | case MSR_KVM_WALL_CLOCK:
|
1317 | 1a03675d | Glauber Costa | env->wall_clock_msr = msrs[i].data; |
1318 | 1a03675d | Glauber Costa | break;
|
1319 | 57780495 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
1320 | 57780495 | Marcelo Tosatti | case MSR_MCG_STATUS:
|
1321 | 57780495 | Marcelo Tosatti | env->mcg_status = msrs[i].data; |
1322 | 57780495 | Marcelo Tosatti | break;
|
1323 | 57780495 | Marcelo Tosatti | case MSR_MCG_CTL:
|
1324 | 57780495 | Marcelo Tosatti | env->mcg_ctl = msrs[i].data; |
1325 | 57780495 | Marcelo Tosatti | break;
|
1326 | 57780495 | Marcelo Tosatti | #endif
|
1327 | 57780495 | Marcelo Tosatti | default:
|
1328 | 57780495 | Marcelo Tosatti | #ifdef KVM_CAP_MCE
|
1329 | 57780495 | Marcelo Tosatti | if (msrs[i].index >= MSR_MC0_CTL &&
|
1330 | 57780495 | Marcelo Tosatti | msrs[i].index < MSR_MC0_CTL + (env->mcg_cap & 0xff) * 4) { |
1331 | 57780495 | Marcelo Tosatti | env->mce_banks[msrs[i].index - MSR_MC0_CTL] = msrs[i].data; |
1332 | 57780495 | Marcelo Tosatti | } |
1333 | 57780495 | Marcelo Tosatti | #endif
|
1334 | d8da8574 | Hidetoshi Seto | break;
|
1335 | 521f0798 | Jan Kiszka | #if defined(CONFIG_KVM_PARA) && defined(KVM_CAP_ASYNC_PF)
|
1336 | f6584ee2 | Gleb Natapov | case MSR_KVM_ASYNC_PF_EN:
|
1337 | f6584ee2 | Gleb Natapov | env->async_pf_en_msr = msrs[i].data; |
1338 | f6584ee2 | Gleb Natapov | break;
|
1339 | f6584ee2 | Gleb Natapov | #endif
|
1340 | 05330448 | aliguori | } |
1341 | 05330448 | aliguori | } |
1342 | 05330448 | aliguori | |
1343 | 05330448 | aliguori | return 0; |
1344 | 05330448 | aliguori | } |
1345 | 05330448 | aliguori | |
1346 | 9bdbe550 | Hollis Blanchard | static int kvm_put_mp_state(CPUState *env) |
1347 | 9bdbe550 | Hollis Blanchard | { |
1348 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
|
1349 | 9bdbe550 | Hollis Blanchard | |
1350 | 9bdbe550 | Hollis Blanchard | return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
|
1351 | 9bdbe550 | Hollis Blanchard | } |
1352 | 9bdbe550 | Hollis Blanchard | |
1353 | 9bdbe550 | Hollis Blanchard | static int kvm_get_mp_state(CPUState *env) |
1354 | 9bdbe550 | Hollis Blanchard | { |
1355 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state;
|
1356 | 9bdbe550 | Hollis Blanchard | int ret;
|
1357 | 9bdbe550 | Hollis Blanchard | |
1358 | 9bdbe550 | Hollis Blanchard | ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state); |
1359 | 9bdbe550 | Hollis Blanchard | if (ret < 0) { |
1360 | 9bdbe550 | Hollis Blanchard | return ret;
|
1361 | 9bdbe550 | Hollis Blanchard | } |
1362 | 9bdbe550 | Hollis Blanchard | env->mp_state = mp_state.mp_state; |
1363 | c14750e8 | Jan Kiszka | if (kvm_irqchip_in_kernel()) {
|
1364 | c14750e8 | Jan Kiszka | env->halted = (mp_state.mp_state == KVM_MP_STATE_HALTED); |
1365 | c14750e8 | Jan Kiszka | } |
1366 | 9bdbe550 | Hollis Blanchard | return 0; |
1367 | 9bdbe550 | Hollis Blanchard | } |
1368 | 9bdbe550 | Hollis Blanchard | |
1369 | ea643051 | Jan Kiszka | static int kvm_put_vcpu_events(CPUState *env, int level) |
1370 | a0fb002c | Jan Kiszka | { |
1371 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1372 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
1373 | a0fb002c | Jan Kiszka | |
1374 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
1375 | a0fb002c | Jan Kiszka | return 0; |
1376 | a0fb002c | Jan Kiszka | } |
1377 | a0fb002c | Jan Kiszka | |
1378 | 31827373 | Jan Kiszka | events.exception.injected = (env->exception_injected >= 0);
|
1379 | 31827373 | Jan Kiszka | events.exception.nr = env->exception_injected; |
1380 | a0fb002c | Jan Kiszka | events.exception.has_error_code = env->has_error_code; |
1381 | a0fb002c | Jan Kiszka | events.exception.error_code = env->error_code; |
1382 | a0fb002c | Jan Kiszka | |
1383 | a0fb002c | Jan Kiszka | events.interrupt.injected = (env->interrupt_injected >= 0);
|
1384 | a0fb002c | Jan Kiszka | events.interrupt.nr = env->interrupt_injected; |
1385 | a0fb002c | Jan Kiszka | events.interrupt.soft = env->soft_interrupt; |
1386 | a0fb002c | Jan Kiszka | |
1387 | a0fb002c | Jan Kiszka | events.nmi.injected = env->nmi_injected; |
1388 | a0fb002c | Jan Kiszka | events.nmi.pending = env->nmi_pending; |
1389 | a0fb002c | Jan Kiszka | events.nmi.masked = !!(env->hflags2 & HF2_NMI_MASK); |
1390 | a0fb002c | Jan Kiszka | |
1391 | a0fb002c | Jan Kiszka | events.sipi_vector = env->sipi_vector; |
1392 | a0fb002c | Jan Kiszka | |
1393 | ea643051 | Jan Kiszka | events.flags = 0;
|
1394 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
1395 | ea643051 | Jan Kiszka | events.flags |= |
1396 | ea643051 | Jan Kiszka | KVM_VCPUEVENT_VALID_NMI_PENDING | KVM_VCPUEVENT_VALID_SIPI_VECTOR; |
1397 | ea643051 | Jan Kiszka | } |
1398 | aee028b9 | Jan Kiszka | |
1399 | a0fb002c | Jan Kiszka | return kvm_vcpu_ioctl(env, KVM_SET_VCPU_EVENTS, &events);
|
1400 | a0fb002c | Jan Kiszka | #else
|
1401 | a0fb002c | Jan Kiszka | return 0; |
1402 | a0fb002c | Jan Kiszka | #endif
|
1403 | a0fb002c | Jan Kiszka | } |
1404 | a0fb002c | Jan Kiszka | |
1405 | a0fb002c | Jan Kiszka | static int kvm_get_vcpu_events(CPUState *env) |
1406 | a0fb002c | Jan Kiszka | { |
1407 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
1408 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
1409 | a0fb002c | Jan Kiszka | int ret;
|
1410 | a0fb002c | Jan Kiszka | |
1411 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
1412 | a0fb002c | Jan Kiszka | return 0; |
1413 | a0fb002c | Jan Kiszka | } |
1414 | a0fb002c | Jan Kiszka | |
1415 | a0fb002c | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_GET_VCPU_EVENTS, &events); |
1416 | a0fb002c | Jan Kiszka | if (ret < 0) { |
1417 | a0fb002c | Jan Kiszka | return ret;
|
1418 | a0fb002c | Jan Kiszka | } |
1419 | 31827373 | Jan Kiszka | env->exception_injected = |
1420 | a0fb002c | Jan Kiszka | events.exception.injected ? events.exception.nr : -1;
|
1421 | a0fb002c | Jan Kiszka | env->has_error_code = events.exception.has_error_code; |
1422 | a0fb002c | Jan Kiszka | env->error_code = events.exception.error_code; |
1423 | a0fb002c | Jan Kiszka | |
1424 | a0fb002c | Jan Kiszka | env->interrupt_injected = |
1425 | a0fb002c | Jan Kiszka | events.interrupt.injected ? events.interrupt.nr : -1;
|
1426 | a0fb002c | Jan Kiszka | env->soft_interrupt = events.interrupt.soft; |
1427 | a0fb002c | Jan Kiszka | |
1428 | a0fb002c | Jan Kiszka | env->nmi_injected = events.nmi.injected; |
1429 | a0fb002c | Jan Kiszka | env->nmi_pending = events.nmi.pending; |
1430 | a0fb002c | Jan Kiszka | if (events.nmi.masked) {
|
1431 | a0fb002c | Jan Kiszka | env->hflags2 |= HF2_NMI_MASK; |
1432 | a0fb002c | Jan Kiszka | } else {
|
1433 | a0fb002c | Jan Kiszka | env->hflags2 &= ~HF2_NMI_MASK; |
1434 | a0fb002c | Jan Kiszka | } |
1435 | a0fb002c | Jan Kiszka | |
1436 | a0fb002c | Jan Kiszka | env->sipi_vector = events.sipi_vector; |
1437 | a0fb002c | Jan Kiszka | #endif
|
1438 | a0fb002c | Jan Kiszka | |
1439 | a0fb002c | Jan Kiszka | return 0; |
1440 | a0fb002c | Jan Kiszka | } |
1441 | a0fb002c | Jan Kiszka | |
1442 | b0b1d690 | Jan Kiszka | static int kvm_guest_debug_workarounds(CPUState *env) |
1443 | b0b1d690 | Jan Kiszka | { |
1444 | b0b1d690 | Jan Kiszka | int ret = 0; |
1445 | b0b1d690 | Jan Kiszka | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1446 | b0b1d690 | Jan Kiszka | unsigned long reinject_trap = 0; |
1447 | b0b1d690 | Jan Kiszka | |
1448 | b0b1d690 | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
1449 | b0b1d690 | Jan Kiszka | if (env->exception_injected == 1) { |
1450 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_DB; |
1451 | b0b1d690 | Jan Kiszka | } else if (env->exception_injected == 3) { |
1452 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_BP; |
1453 | b0b1d690 | Jan Kiszka | } |
1454 | b0b1d690 | Jan Kiszka | env->exception_injected = -1;
|
1455 | b0b1d690 | Jan Kiszka | } |
1456 | b0b1d690 | Jan Kiszka | |
1457 | b0b1d690 | Jan Kiszka | /*
|
1458 | b0b1d690 | Jan Kiszka | * Kernels before KVM_CAP_X86_ROBUST_SINGLESTEP overwrote flags.TF
|
1459 | b0b1d690 | Jan Kiszka | * injected via SET_GUEST_DEBUG while updating GP regs. Work around this
|
1460 | b0b1d690 | Jan Kiszka | * by updating the debug state once again if single-stepping is on.
|
1461 | b0b1d690 | Jan Kiszka | * Another reason to call kvm_update_guest_debug here is a pending debug
|
1462 | b0b1d690 | Jan Kiszka | * trap raise by the guest. On kernels without SET_VCPU_EVENTS we have to
|
1463 | b0b1d690 | Jan Kiszka | * reinject them via SET_GUEST_DEBUG.
|
1464 | b0b1d690 | Jan Kiszka | */
|
1465 | b0b1d690 | Jan Kiszka | if (reinject_trap ||
|
1466 | b0b1d690 | Jan Kiszka | (!kvm_has_robust_singlestep() && env->singlestep_enabled)) { |
1467 | b0b1d690 | Jan Kiszka | ret = kvm_update_guest_debug(env, reinject_trap); |
1468 | b0b1d690 | Jan Kiszka | } |
1469 | b0b1d690 | Jan Kiszka | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
1470 | b0b1d690 | Jan Kiszka | return ret;
|
1471 | b0b1d690 | Jan Kiszka | } |
1472 | b0b1d690 | Jan Kiszka | |
1473 | ff44f1a3 | Jan Kiszka | static int kvm_put_debugregs(CPUState *env) |
1474 | ff44f1a3 | Jan Kiszka | { |
1475 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1476 | ff44f1a3 | Jan Kiszka | struct kvm_debugregs dbgregs;
|
1477 | ff44f1a3 | Jan Kiszka | int i;
|
1478 | ff44f1a3 | Jan Kiszka | |
1479 | ff44f1a3 | Jan Kiszka | if (!kvm_has_debugregs()) {
|
1480 | ff44f1a3 | Jan Kiszka | return 0; |
1481 | ff44f1a3 | Jan Kiszka | } |
1482 | ff44f1a3 | Jan Kiszka | |
1483 | ff44f1a3 | Jan Kiszka | for (i = 0; i < 4; i++) { |
1484 | ff44f1a3 | Jan Kiszka | dbgregs.db[i] = env->dr[i]; |
1485 | ff44f1a3 | Jan Kiszka | } |
1486 | ff44f1a3 | Jan Kiszka | dbgregs.dr6 = env->dr[6];
|
1487 | ff44f1a3 | Jan Kiszka | dbgregs.dr7 = env->dr[7];
|
1488 | ff44f1a3 | Jan Kiszka | dbgregs.flags = 0;
|
1489 | ff44f1a3 | Jan Kiszka | |
1490 | ff44f1a3 | Jan Kiszka | return kvm_vcpu_ioctl(env, KVM_SET_DEBUGREGS, &dbgregs);
|
1491 | ff44f1a3 | Jan Kiszka | #else
|
1492 | ff44f1a3 | Jan Kiszka | return 0; |
1493 | ff44f1a3 | Jan Kiszka | #endif
|
1494 | ff44f1a3 | Jan Kiszka | } |
1495 | ff44f1a3 | Jan Kiszka | |
1496 | ff44f1a3 | Jan Kiszka | static int kvm_get_debugregs(CPUState *env) |
1497 | ff44f1a3 | Jan Kiszka | { |
1498 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
1499 | ff44f1a3 | Jan Kiszka | struct kvm_debugregs dbgregs;
|
1500 | ff44f1a3 | Jan Kiszka | int i, ret;
|
1501 | ff44f1a3 | Jan Kiszka | |
1502 | ff44f1a3 | Jan Kiszka | if (!kvm_has_debugregs()) {
|
1503 | ff44f1a3 | Jan Kiszka | return 0; |
1504 | ff44f1a3 | Jan Kiszka | } |
1505 | ff44f1a3 | Jan Kiszka | |
1506 | ff44f1a3 | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_GET_DEBUGREGS, &dbgregs); |
1507 | ff44f1a3 | Jan Kiszka | if (ret < 0) { |
1508 | b9bec74b | Jan Kiszka | return ret;
|
1509 | ff44f1a3 | Jan Kiszka | } |
1510 | ff44f1a3 | Jan Kiszka | for (i = 0; i < 4; i++) { |
1511 | ff44f1a3 | Jan Kiszka | env->dr[i] = dbgregs.db[i]; |
1512 | ff44f1a3 | Jan Kiszka | } |
1513 | ff44f1a3 | Jan Kiszka | env->dr[4] = env->dr[6] = dbgregs.dr6; |
1514 | ff44f1a3 | Jan Kiszka | env->dr[5] = env->dr[7] = dbgregs.dr7; |
1515 | ff44f1a3 | Jan Kiszka | #endif
|
1516 | ff44f1a3 | Jan Kiszka | |
1517 | ff44f1a3 | Jan Kiszka | return 0; |
1518 | ff44f1a3 | Jan Kiszka | } |
1519 | ff44f1a3 | Jan Kiszka | |
1520 | ea375f9a | Jan Kiszka | int kvm_arch_put_registers(CPUState *env, int level) |
1521 | 05330448 | aliguori | { |
1522 | 05330448 | aliguori | int ret;
|
1523 | 05330448 | aliguori | |
1524 | b7680cb6 | Jan Kiszka | assert(cpu_is_stopped(env) || qemu_cpu_is_self(env)); |
1525 | dbaa07c4 | Jan Kiszka | |
1526 | 05330448 | aliguori | ret = kvm_getput_regs(env, 1);
|
1527 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1528 | 05330448 | aliguori | return ret;
|
1529 | b9bec74b | Jan Kiszka | } |
1530 | f1665b21 | Sheng Yang | ret = kvm_put_xsave(env); |
1531 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1532 | f1665b21 | Sheng Yang | return ret;
|
1533 | b9bec74b | Jan Kiszka | } |
1534 | f1665b21 | Sheng Yang | ret = kvm_put_xcrs(env); |
1535 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1536 | 05330448 | aliguori | return ret;
|
1537 | b9bec74b | Jan Kiszka | } |
1538 | 05330448 | aliguori | ret = kvm_put_sregs(env); |
1539 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1540 | 05330448 | aliguori | return ret;
|
1541 | b9bec74b | Jan Kiszka | } |
1542 | ea643051 | Jan Kiszka | ret = kvm_put_msrs(env, level); |
1543 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1544 | 05330448 | aliguori | return ret;
|
1545 | b9bec74b | Jan Kiszka | } |
1546 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
1547 | ea643051 | Jan Kiszka | ret = kvm_put_mp_state(env); |
1548 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1549 | ea643051 | Jan Kiszka | return ret;
|
1550 | b9bec74b | Jan Kiszka | } |
1551 | ea643051 | Jan Kiszka | } |
1552 | ea643051 | Jan Kiszka | ret = kvm_put_vcpu_events(env, level); |
1553 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1554 | a0fb002c | Jan Kiszka | return ret;
|
1555 | b9bec74b | Jan Kiszka | } |
1556 | 0d75a9ec | Jan Kiszka | ret = kvm_put_debugregs(env); |
1557 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1558 | b0b1d690 | Jan Kiszka | return ret;
|
1559 | b9bec74b | Jan Kiszka | } |
1560 | b0b1d690 | Jan Kiszka | /* must be last */
|
1561 | b0b1d690 | Jan Kiszka | ret = kvm_guest_debug_workarounds(env); |
1562 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1563 | ff44f1a3 | Jan Kiszka | return ret;
|
1564 | b9bec74b | Jan Kiszka | } |
1565 | 05330448 | aliguori | return 0; |
1566 | 05330448 | aliguori | } |
1567 | 05330448 | aliguori | |
1568 | 05330448 | aliguori | int kvm_arch_get_registers(CPUState *env)
|
1569 | 05330448 | aliguori | { |
1570 | 05330448 | aliguori | int ret;
|
1571 | 05330448 | aliguori | |
1572 | b7680cb6 | Jan Kiszka | assert(cpu_is_stopped(env) || qemu_cpu_is_self(env)); |
1573 | dbaa07c4 | Jan Kiszka | |
1574 | 05330448 | aliguori | ret = kvm_getput_regs(env, 0);
|
1575 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1576 | 05330448 | aliguori | return ret;
|
1577 | b9bec74b | Jan Kiszka | } |
1578 | f1665b21 | Sheng Yang | ret = kvm_get_xsave(env); |
1579 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1580 | f1665b21 | Sheng Yang | return ret;
|
1581 | b9bec74b | Jan Kiszka | } |
1582 | f1665b21 | Sheng Yang | ret = kvm_get_xcrs(env); |
1583 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1584 | 05330448 | aliguori | return ret;
|
1585 | b9bec74b | Jan Kiszka | } |
1586 | 05330448 | aliguori | ret = kvm_get_sregs(env); |
1587 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1588 | 05330448 | aliguori | return ret;
|
1589 | b9bec74b | Jan Kiszka | } |
1590 | 05330448 | aliguori | ret = kvm_get_msrs(env); |
1591 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1592 | 05330448 | aliguori | return ret;
|
1593 | b9bec74b | Jan Kiszka | } |
1594 | 5a2e3c2e | Jan Kiszka | ret = kvm_get_mp_state(env); |
1595 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1596 | 5a2e3c2e | Jan Kiszka | return ret;
|
1597 | b9bec74b | Jan Kiszka | } |
1598 | a0fb002c | Jan Kiszka | ret = kvm_get_vcpu_events(env); |
1599 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1600 | a0fb002c | Jan Kiszka | return ret;
|
1601 | b9bec74b | Jan Kiszka | } |
1602 | ff44f1a3 | Jan Kiszka | ret = kvm_get_debugregs(env); |
1603 | b9bec74b | Jan Kiszka | if (ret < 0) { |
1604 | ff44f1a3 | Jan Kiszka | return ret;
|
1605 | b9bec74b | Jan Kiszka | } |
1606 | 05330448 | aliguori | return 0; |
1607 | 05330448 | aliguori | } |
1608 | 05330448 | aliguori | |
1609 | 7a39fe58 | Jan Kiszka | void kvm_arch_pre_run(CPUState *env, struct kvm_run *run) |
1610 | 05330448 | aliguori | { |
1611 | ce377af3 | Jan Kiszka | int ret;
|
1612 | ce377af3 | Jan Kiszka | |
1613 | 276ce815 | Lai Jiangshan | /* Inject NMI */
|
1614 | 276ce815 | Lai Jiangshan | if (env->interrupt_request & CPU_INTERRUPT_NMI) {
|
1615 | 276ce815 | Lai Jiangshan | env->interrupt_request &= ~CPU_INTERRUPT_NMI; |
1616 | 276ce815 | Lai Jiangshan | DPRINTF("injected NMI\n");
|
1617 | ce377af3 | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_NMI); |
1618 | ce377af3 | Jan Kiszka | if (ret < 0) { |
1619 | ce377af3 | Jan Kiszka | fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n",
|
1620 | ce377af3 | Jan Kiszka | strerror(-ret)); |
1621 | ce377af3 | Jan Kiszka | } |
1622 | 276ce815 | Lai Jiangshan | } |
1623 | 276ce815 | Lai Jiangshan | |
1624 | db1669bc | Jan Kiszka | if (!kvm_irqchip_in_kernel()) {
|
1625 | db1669bc | Jan Kiszka | /* Force the VCPU out of its inner loop to process the INIT request */
|
1626 | db1669bc | Jan Kiszka | if (env->interrupt_request & CPU_INTERRUPT_INIT) {
|
1627 | db1669bc | Jan Kiszka | env->exit_request = 1;
|
1628 | 05330448 | aliguori | } |
1629 | 05330448 | aliguori | |
1630 | db1669bc | Jan Kiszka | /* Try to inject an interrupt if the guest can accept it */
|
1631 | db1669bc | Jan Kiszka | if (run->ready_for_interrupt_injection &&
|
1632 | db1669bc | Jan Kiszka | (env->interrupt_request & CPU_INTERRUPT_HARD) && |
1633 | db1669bc | Jan Kiszka | (env->eflags & IF_MASK)) { |
1634 | db1669bc | Jan Kiszka | int irq;
|
1635 | db1669bc | Jan Kiszka | |
1636 | db1669bc | Jan Kiszka | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
1637 | db1669bc | Jan Kiszka | irq = cpu_get_pic_interrupt(env); |
1638 | db1669bc | Jan Kiszka | if (irq >= 0) { |
1639 | db1669bc | Jan Kiszka | struct kvm_interrupt intr;
|
1640 | db1669bc | Jan Kiszka | |
1641 | db1669bc | Jan Kiszka | intr.irq = irq; |
1642 | db1669bc | Jan Kiszka | DPRINTF("injected interrupt %d\n", irq);
|
1643 | ce377af3 | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
1644 | ce377af3 | Jan Kiszka | if (ret < 0) { |
1645 | ce377af3 | Jan Kiszka | fprintf(stderr, |
1646 | ce377af3 | Jan Kiszka | "KVM: injection failed, interrupt lost (%s)\n",
|
1647 | ce377af3 | Jan Kiszka | strerror(-ret)); |
1648 | ce377af3 | Jan Kiszka | } |
1649 | db1669bc | Jan Kiszka | } |
1650 | db1669bc | Jan Kiszka | } |
1651 | 05330448 | aliguori | |
1652 | db1669bc | Jan Kiszka | /* If we have an interrupt but the guest is not ready to receive an
|
1653 | db1669bc | Jan Kiszka | * interrupt, request an interrupt window exit. This will
|
1654 | db1669bc | Jan Kiszka | * cause a return to userspace as soon as the guest is ready to
|
1655 | db1669bc | Jan Kiszka | * receive interrupts. */
|
1656 | db1669bc | Jan Kiszka | if ((env->interrupt_request & CPU_INTERRUPT_HARD)) {
|
1657 | db1669bc | Jan Kiszka | run->request_interrupt_window = 1;
|
1658 | db1669bc | Jan Kiszka | } else {
|
1659 | db1669bc | Jan Kiszka | run->request_interrupt_window = 0;
|
1660 | db1669bc | Jan Kiszka | } |
1661 | db1669bc | Jan Kiszka | |
1662 | db1669bc | Jan Kiszka | DPRINTF("setting tpr\n");
|
1663 | db1669bc | Jan Kiszka | run->cr8 = cpu_get_apic_tpr(env->apic_state); |
1664 | db1669bc | Jan Kiszka | } |
1665 | 05330448 | aliguori | } |
1666 | 05330448 | aliguori | |
1667 | 7a39fe58 | Jan Kiszka | void kvm_arch_post_run(CPUState *env, struct kvm_run *run) |
1668 | 05330448 | aliguori | { |
1669 | b9bec74b | Jan Kiszka | if (run->if_flag) {
|
1670 | 05330448 | aliguori | env->eflags |= IF_MASK; |
1671 | b9bec74b | Jan Kiszka | } else {
|
1672 | 05330448 | aliguori | env->eflags &= ~IF_MASK; |
1673 | b9bec74b | Jan Kiszka | } |
1674 | 4a942cea | Blue Swirl | cpu_set_apic_tpr(env->apic_state, run->cr8); |
1675 | 4a942cea | Blue Swirl | cpu_set_apic_base(env->apic_state, run->apic_base); |
1676 | 05330448 | aliguori | } |
1677 | 05330448 | aliguori | |
1678 | 99036865 | Jan Kiszka | int kvm_arch_process_async_events(CPUState *env)
|
1679 | 0af691d7 | Marcelo Tosatti | { |
1680 | db1669bc | Jan Kiszka | if (kvm_irqchip_in_kernel()) {
|
1681 | db1669bc | Jan Kiszka | return 0; |
1682 | db1669bc | Jan Kiszka | } |
1683 | db1669bc | Jan Kiszka | |
1684 | 6792a57b | Jan Kiszka | if (env->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI)) {
|
1685 | 6792a57b | Jan Kiszka | env->halted = 0;
|
1686 | 6792a57b | Jan Kiszka | } |
1687 | 0af691d7 | Marcelo Tosatti | if (env->interrupt_request & CPU_INTERRUPT_INIT) {
|
1688 | 0af691d7 | Marcelo Tosatti | kvm_cpu_synchronize_state(env); |
1689 | 0af691d7 | Marcelo Tosatti | do_cpu_init(env); |
1690 | 0af691d7 | Marcelo Tosatti | } |
1691 | 0af691d7 | Marcelo Tosatti | if (env->interrupt_request & CPU_INTERRUPT_SIPI) {
|
1692 | 0af691d7 | Marcelo Tosatti | kvm_cpu_synchronize_state(env); |
1693 | 0af691d7 | Marcelo Tosatti | do_cpu_sipi(env); |
1694 | 0af691d7 | Marcelo Tosatti | } |
1695 | 0af691d7 | Marcelo Tosatti | |
1696 | 0af691d7 | Marcelo Tosatti | return env->halted;
|
1697 | 0af691d7 | Marcelo Tosatti | } |
1698 | 0af691d7 | Marcelo Tosatti | |
1699 | 05330448 | aliguori | static int kvm_handle_halt(CPUState *env) |
1700 | 05330448 | aliguori | { |
1701 | 05330448 | aliguori | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
1702 | 05330448 | aliguori | (env->eflags & IF_MASK)) && |
1703 | 05330448 | aliguori | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { |
1704 | 05330448 | aliguori | env->halted = 1;
|
1705 | 05330448 | aliguori | return 0; |
1706 | 05330448 | aliguori | } |
1707 | 05330448 | aliguori | |
1708 | 05330448 | aliguori | return 1; |
1709 | 05330448 | aliguori | } |
1710 | 05330448 | aliguori | |
1711 | bb44e0d1 | Jan Kiszka | static bool host_supports_vmx(void) |
1712 | bb44e0d1 | Jan Kiszka | { |
1713 | bb44e0d1 | Jan Kiszka | uint32_t ecx, unused; |
1714 | bb44e0d1 | Jan Kiszka | |
1715 | bb44e0d1 | Jan Kiszka | host_cpuid(1, 0, &unused, &unused, &ecx, &unused); |
1716 | bb44e0d1 | Jan Kiszka | return ecx & CPUID_EXT_VMX;
|
1717 | bb44e0d1 | Jan Kiszka | } |
1718 | bb44e0d1 | Jan Kiszka | |
1719 | bb44e0d1 | Jan Kiszka | #define VMX_INVALID_GUEST_STATE 0x80000021 |
1720 | bb44e0d1 | Jan Kiszka | |
1721 | 05330448 | aliguori | int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) |
1722 | 05330448 | aliguori | { |
1723 | bb44e0d1 | Jan Kiszka | uint64_t code; |
1724 | 05330448 | aliguori | int ret = 0; |
1725 | 05330448 | aliguori | |
1726 | 05330448 | aliguori | switch (run->exit_reason) {
|
1727 | 05330448 | aliguori | case KVM_EXIT_HLT:
|
1728 | 8c0d577e | Blue Swirl | DPRINTF("handle_hlt\n");
|
1729 | 05330448 | aliguori | ret = kvm_handle_halt(env); |
1730 | 05330448 | aliguori | break;
|
1731 | 646042e1 | Jan Kiszka | case KVM_EXIT_SET_TPR:
|
1732 | 646042e1 | Jan Kiszka | ret = 1;
|
1733 | 646042e1 | Jan Kiszka | break;
|
1734 | bb44e0d1 | Jan Kiszka | case KVM_EXIT_FAIL_ENTRY:
|
1735 | bb44e0d1 | Jan Kiszka | code = run->fail_entry.hardware_entry_failure_reason; |
1736 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n", |
1737 | bb44e0d1 | Jan Kiszka | code); |
1738 | bb44e0d1 | Jan Kiszka | if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) {
|
1739 | bb44e0d1 | Jan Kiszka | fprintf(stderr, |
1740 | bb44e0d1 | Jan Kiszka | "\nIf you're runnning a guest on an Intel machine without "
|
1741 | bb44e0d1 | Jan Kiszka | "unrestricted mode\n"
|
1742 | bb44e0d1 | Jan Kiszka | "support, the failure can be most likely due to the guest "
|
1743 | bb44e0d1 | Jan Kiszka | "entering an invalid\n"
|
1744 | bb44e0d1 | Jan Kiszka | "state for Intel VT. For example, the guest maybe running "
|
1745 | bb44e0d1 | Jan Kiszka | "in big real mode\n"
|
1746 | bb44e0d1 | Jan Kiszka | "which is not supported on less recent Intel processors."
|
1747 | bb44e0d1 | Jan Kiszka | "\n\n");
|
1748 | bb44e0d1 | Jan Kiszka | } |
1749 | bb44e0d1 | Jan Kiszka | ret = -1;
|
1750 | bb44e0d1 | Jan Kiszka | break;
|
1751 | bb44e0d1 | Jan Kiszka | case KVM_EXIT_EXCEPTION:
|
1752 | bb44e0d1 | Jan Kiszka | fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n",
|
1753 | bb44e0d1 | Jan Kiszka | run->ex.exception, run->ex.error_code); |
1754 | bb44e0d1 | Jan Kiszka | ret = -1;
|
1755 | bb44e0d1 | Jan Kiszka | break;
|
1756 | 73aaec4a | Jan Kiszka | default:
|
1757 | 73aaec4a | Jan Kiszka | fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
|
1758 | 73aaec4a | Jan Kiszka | ret = -1;
|
1759 | 73aaec4a | Jan Kiszka | break;
|
1760 | 05330448 | aliguori | } |
1761 | 05330448 | aliguori | |
1762 | 05330448 | aliguori | return ret;
|
1763 | 05330448 | aliguori | } |
1764 | e22a25c9 | aliguori | |
1765 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1766 | e22a25c9 | aliguori | int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1767 | e22a25c9 | aliguori | { |
1768 | 38972938 | Juan Quintela | static const uint8_t int3 = 0xcc; |
1769 | 64bf3f4e | aliguori | |
1770 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) || |
1771 | b9bec74b | Jan Kiszka | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1)) { |
1772 | e22a25c9 | aliguori | return -EINVAL;
|
1773 | b9bec74b | Jan Kiszka | } |
1774 | e22a25c9 | aliguori | return 0; |
1775 | e22a25c9 | aliguori | } |
1776 | e22a25c9 | aliguori | |
1777 | e22a25c9 | aliguori | int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1778 | e22a25c9 | aliguori | { |
1779 | e22a25c9 | aliguori | uint8_t int3; |
1780 | e22a25c9 | aliguori | |
1781 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc || |
1782 | b9bec74b | Jan Kiszka | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) { |
1783 | e22a25c9 | aliguori | return -EINVAL;
|
1784 | b9bec74b | Jan Kiszka | } |
1785 | e22a25c9 | aliguori | return 0; |
1786 | e22a25c9 | aliguori | } |
1787 | e22a25c9 | aliguori | |
1788 | e22a25c9 | aliguori | static struct { |
1789 | e22a25c9 | aliguori | target_ulong addr; |
1790 | e22a25c9 | aliguori | int len;
|
1791 | e22a25c9 | aliguori | int type;
|
1792 | e22a25c9 | aliguori | } hw_breakpoint[4];
|
1793 | e22a25c9 | aliguori | |
1794 | e22a25c9 | aliguori | static int nb_hw_breakpoint; |
1795 | e22a25c9 | aliguori | |
1796 | e22a25c9 | aliguori | static int find_hw_breakpoint(target_ulong addr, int len, int type) |
1797 | e22a25c9 | aliguori | { |
1798 | e22a25c9 | aliguori | int n;
|
1799 | e22a25c9 | aliguori | |
1800 | b9bec74b | Jan Kiszka | for (n = 0; n < nb_hw_breakpoint; n++) { |
1801 | e22a25c9 | aliguori | if (hw_breakpoint[n].addr == addr && hw_breakpoint[n].type == type &&
|
1802 | b9bec74b | Jan Kiszka | (hw_breakpoint[n].len == len || len == -1)) {
|
1803 | e22a25c9 | aliguori | return n;
|
1804 | b9bec74b | Jan Kiszka | } |
1805 | b9bec74b | Jan Kiszka | } |
1806 | e22a25c9 | aliguori | return -1; |
1807 | e22a25c9 | aliguori | } |
1808 | e22a25c9 | aliguori | |
1809 | e22a25c9 | aliguori | int kvm_arch_insert_hw_breakpoint(target_ulong addr,
|
1810 | e22a25c9 | aliguori | target_ulong len, int type)
|
1811 | e22a25c9 | aliguori | { |
1812 | e22a25c9 | aliguori | switch (type) {
|
1813 | e22a25c9 | aliguori | case GDB_BREAKPOINT_HW:
|
1814 | e22a25c9 | aliguori | len = 1;
|
1815 | e22a25c9 | aliguori | break;
|
1816 | e22a25c9 | aliguori | case GDB_WATCHPOINT_WRITE:
|
1817 | e22a25c9 | aliguori | case GDB_WATCHPOINT_ACCESS:
|
1818 | e22a25c9 | aliguori | switch (len) {
|
1819 | e22a25c9 | aliguori | case 1: |
1820 | e22a25c9 | aliguori | break;
|
1821 | e22a25c9 | aliguori | case 2: |
1822 | e22a25c9 | aliguori | case 4: |
1823 | e22a25c9 | aliguori | case 8: |
1824 | b9bec74b | Jan Kiszka | if (addr & (len - 1)) { |
1825 | e22a25c9 | aliguori | return -EINVAL;
|
1826 | b9bec74b | Jan Kiszka | } |
1827 | e22a25c9 | aliguori | break;
|
1828 | e22a25c9 | aliguori | default:
|
1829 | e22a25c9 | aliguori | return -EINVAL;
|
1830 | e22a25c9 | aliguori | } |
1831 | e22a25c9 | aliguori | break;
|
1832 | e22a25c9 | aliguori | default:
|
1833 | e22a25c9 | aliguori | return -ENOSYS;
|
1834 | e22a25c9 | aliguori | } |
1835 | e22a25c9 | aliguori | |
1836 | b9bec74b | Jan Kiszka | if (nb_hw_breakpoint == 4) { |
1837 | e22a25c9 | aliguori | return -ENOBUFS;
|
1838 | b9bec74b | Jan Kiszka | } |
1839 | b9bec74b | Jan Kiszka | if (find_hw_breakpoint(addr, len, type) >= 0) { |
1840 | e22a25c9 | aliguori | return -EEXIST;
|
1841 | b9bec74b | Jan Kiszka | } |
1842 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].addr = addr; |
1843 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].len = len; |
1844 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].type = type; |
1845 | e22a25c9 | aliguori | nb_hw_breakpoint++; |
1846 | e22a25c9 | aliguori | |
1847 | e22a25c9 | aliguori | return 0; |
1848 | e22a25c9 | aliguori | } |
1849 | e22a25c9 | aliguori | |
1850 | e22a25c9 | aliguori | int kvm_arch_remove_hw_breakpoint(target_ulong addr,
|
1851 | e22a25c9 | aliguori | target_ulong len, int type)
|
1852 | e22a25c9 | aliguori | { |
1853 | e22a25c9 | aliguori | int n;
|
1854 | e22a25c9 | aliguori | |
1855 | e22a25c9 | aliguori | n = find_hw_breakpoint(addr, (type == GDB_BREAKPOINT_HW) ? 1 : len, type);
|
1856 | b9bec74b | Jan Kiszka | if (n < 0) { |
1857 | e22a25c9 | aliguori | return -ENOENT;
|
1858 | b9bec74b | Jan Kiszka | } |
1859 | e22a25c9 | aliguori | nb_hw_breakpoint--; |
1860 | e22a25c9 | aliguori | hw_breakpoint[n] = hw_breakpoint[nb_hw_breakpoint]; |
1861 | e22a25c9 | aliguori | |
1862 | e22a25c9 | aliguori | return 0; |
1863 | e22a25c9 | aliguori | } |
1864 | e22a25c9 | aliguori | |
1865 | e22a25c9 | aliguori | void kvm_arch_remove_all_hw_breakpoints(void) |
1866 | e22a25c9 | aliguori | { |
1867 | e22a25c9 | aliguori | nb_hw_breakpoint = 0;
|
1868 | e22a25c9 | aliguori | } |
1869 | e22a25c9 | aliguori | |
1870 | e22a25c9 | aliguori | static CPUWatchpoint hw_watchpoint;
|
1871 | e22a25c9 | aliguori | |
1872 | e22a25c9 | aliguori | int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) |
1873 | e22a25c9 | aliguori | { |
1874 | e22a25c9 | aliguori | int handle = 0; |
1875 | e22a25c9 | aliguori | int n;
|
1876 | e22a25c9 | aliguori | |
1877 | e22a25c9 | aliguori | if (arch_info->exception == 1) { |
1878 | e22a25c9 | aliguori | if (arch_info->dr6 & (1 << 14)) { |
1879 | b9bec74b | Jan Kiszka | if (cpu_single_env->singlestep_enabled) {
|
1880 | e22a25c9 | aliguori | handle = 1;
|
1881 | b9bec74b | Jan Kiszka | } |
1882 | e22a25c9 | aliguori | } else {
|
1883 | b9bec74b | Jan Kiszka | for (n = 0; n < 4; n++) { |
1884 | b9bec74b | Jan Kiszka | if (arch_info->dr6 & (1 << n)) { |
1885 | e22a25c9 | aliguori | switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { |
1886 | e22a25c9 | aliguori | case 0x0: |
1887 | e22a25c9 | aliguori | handle = 1;
|
1888 | e22a25c9 | aliguori | break;
|
1889 | e22a25c9 | aliguori | case 0x1: |
1890 | e22a25c9 | aliguori | handle = 1;
|
1891 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1892 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1893 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_WRITE; |
1894 | e22a25c9 | aliguori | break;
|
1895 | e22a25c9 | aliguori | case 0x3: |
1896 | e22a25c9 | aliguori | handle = 1;
|
1897 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1898 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1899 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_ACCESS; |
1900 | e22a25c9 | aliguori | break;
|
1901 | e22a25c9 | aliguori | } |
1902 | b9bec74b | Jan Kiszka | } |
1903 | b9bec74b | Jan Kiszka | } |
1904 | e22a25c9 | aliguori | } |
1905 | b9bec74b | Jan Kiszka | } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) { |
1906 | e22a25c9 | aliguori | handle = 1;
|
1907 | b9bec74b | Jan Kiszka | } |
1908 | b0b1d690 | Jan Kiszka | if (!handle) {
|
1909 | b0b1d690 | Jan Kiszka | cpu_synchronize_state(cpu_single_env); |
1910 | b0b1d690 | Jan Kiszka | assert(cpu_single_env->exception_injected == -1);
|
1911 | b0b1d690 | Jan Kiszka | |
1912 | b0b1d690 | Jan Kiszka | cpu_single_env->exception_injected = arch_info->exception; |
1913 | b0b1d690 | Jan Kiszka | cpu_single_env->has_error_code = 0;
|
1914 | b0b1d690 | Jan Kiszka | } |
1915 | e22a25c9 | aliguori | |
1916 | e22a25c9 | aliguori | return handle;
|
1917 | e22a25c9 | aliguori | } |
1918 | e22a25c9 | aliguori | |
1919 | e22a25c9 | aliguori | void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg) |
1920 | e22a25c9 | aliguori | { |
1921 | e22a25c9 | aliguori | const uint8_t type_code[] = {
|
1922 | e22a25c9 | aliguori | [GDB_BREAKPOINT_HW] = 0x0,
|
1923 | e22a25c9 | aliguori | [GDB_WATCHPOINT_WRITE] = 0x1,
|
1924 | e22a25c9 | aliguori | [GDB_WATCHPOINT_ACCESS] = 0x3
|
1925 | e22a25c9 | aliguori | }; |
1926 | e22a25c9 | aliguori | const uint8_t len_code[] = {
|
1927 | e22a25c9 | aliguori | [1] = 0x0, [2] = 0x1, [4] = 0x3, [8] = 0x2 |
1928 | e22a25c9 | aliguori | }; |
1929 | e22a25c9 | aliguori | int n;
|
1930 | e22a25c9 | aliguori | |
1931 | b9bec74b | Jan Kiszka | if (kvm_sw_breakpoints_active(env)) {
|
1932 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; |
1933 | b9bec74b | Jan Kiszka | } |
1934 | e22a25c9 | aliguori | if (nb_hw_breakpoint > 0) { |
1935 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; |
1936 | e22a25c9 | aliguori | dbg->arch.debugreg[7] = 0x0600; |
1937 | e22a25c9 | aliguori | for (n = 0; n < nb_hw_breakpoint; n++) { |
1938 | e22a25c9 | aliguori | dbg->arch.debugreg[n] = hw_breakpoint[n].addr; |
1939 | e22a25c9 | aliguori | dbg->arch.debugreg[7] |= (2 << (n * 2)) | |
1940 | e22a25c9 | aliguori | (type_code[hw_breakpoint[n].type] << (16 + n*4)) | |
1941 | 95c077c9 | Jan Kiszka | ((uint32_t)len_code[hw_breakpoint[n].len] << (18 + n*4)); |
1942 | e22a25c9 | aliguori | } |
1943 | e22a25c9 | aliguori | } |
1944 | e22a25c9 | aliguori | } |
1945 | e22a25c9 | aliguori | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
1946 | 4513d923 | Gleb Natapov | |
1947 | 4513d923 | Gleb Natapov | bool kvm_arch_stop_on_emulation_error(CPUState *env)
|
1948 | 4513d923 | Gleb Natapov | { |
1949 | b9bec74b | Jan Kiszka | return !(env->cr[0] & CR0_PE_MASK) || |
1950 | b9bec74b | Jan Kiszka | ((env->segs[R_CS].selector & 3) != 3); |
1951 | 4513d923 | Gleb Natapov | } |