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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 | 05330448 | aliguori | |
19 | 05330448 | aliguori | #include <linux/kvm.h> |
20 | 05330448 | aliguori | |
21 | 05330448 | aliguori | #include "qemu-common.h" |
22 | 05330448 | aliguori | #include "sysemu.h" |
23 | 05330448 | aliguori | #include "kvm.h" |
24 | 05330448 | aliguori | #include "cpu.h" |
25 | e22a25c9 | aliguori | #include "gdbstub.h" |
26 | 0e607a80 | Jan Kiszka | #include "host-utils.h" |
27 | 4c5b10b7 | Jes Sorensen | #include "hw/pc.h" |
28 | 35bed8ee | Paul Brook | #include "ioport.h" |
29 | 05330448 | aliguori | |
30 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
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31 | bb0300dc | Gleb Natapov | #include <linux/kvm_para.h> |
32 | bb0300dc | Gleb Natapov | #endif
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33 | bb0300dc | Gleb Natapov | //
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34 | 05330448 | aliguori | //#define DEBUG_KVM
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35 | 05330448 | aliguori | |
36 | 05330448 | aliguori | #ifdef DEBUG_KVM
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37 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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38 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
39 | 05330448 | aliguori | #else
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40 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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41 | 05330448 | aliguori | do { } while (0) |
42 | 05330448 | aliguori | #endif
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43 | 05330448 | aliguori | |
44 | 1a03675d | Glauber Costa | #define MSR_KVM_WALL_CLOCK 0x11 |
45 | 1a03675d | Glauber Costa | #define MSR_KVM_SYSTEM_TIME 0x12 |
46 | 1a03675d | Glauber Costa | |
47 | b827df58 | Avi Kivity | #ifdef KVM_CAP_EXT_CPUID
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48 | b827df58 | Avi Kivity | |
49 | b827df58 | Avi Kivity | static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max) |
50 | b827df58 | Avi Kivity | { |
51 | b827df58 | Avi Kivity | struct kvm_cpuid2 *cpuid;
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52 | b827df58 | Avi Kivity | int r, size;
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53 | b827df58 | Avi Kivity | |
54 | b827df58 | Avi Kivity | size = sizeof(*cpuid) + max * sizeof(*cpuid->entries); |
55 | b827df58 | Avi Kivity | cpuid = (struct kvm_cpuid2 *)qemu_mallocz(size);
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56 | b827df58 | Avi Kivity | cpuid->nent = max; |
57 | b827df58 | Avi Kivity | r = kvm_ioctl(s, KVM_GET_SUPPORTED_CPUID, cpuid); |
58 | 76ae317f | Mark McLoughlin | if (r == 0 && cpuid->nent >= max) { |
59 | 76ae317f | Mark McLoughlin | r = -E2BIG; |
60 | 76ae317f | Mark McLoughlin | } |
61 | b827df58 | Avi Kivity | if (r < 0) { |
62 | b827df58 | Avi Kivity | if (r == -E2BIG) {
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63 | b827df58 | Avi Kivity | qemu_free(cpuid); |
64 | b827df58 | Avi Kivity | return NULL; |
65 | b827df58 | Avi Kivity | } else {
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66 | b827df58 | Avi Kivity | fprintf(stderr, "KVM_GET_SUPPORTED_CPUID failed: %s\n",
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67 | b827df58 | Avi Kivity | strerror(-r)); |
68 | b827df58 | Avi Kivity | exit(1);
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69 | b827df58 | Avi Kivity | } |
70 | b827df58 | Avi Kivity | } |
71 | b827df58 | Avi Kivity | return cpuid;
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72 | b827df58 | Avi Kivity | } |
73 | b827df58 | Avi Kivity | |
74 | b827df58 | Avi Kivity | uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
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75 | b827df58 | Avi Kivity | { |
76 | b827df58 | Avi Kivity | struct kvm_cpuid2 *cpuid;
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77 | b827df58 | Avi Kivity | int i, max;
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78 | b827df58 | Avi Kivity | uint32_t ret = 0;
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79 | b827df58 | Avi Kivity | uint32_t cpuid_1_edx; |
80 | b827df58 | Avi Kivity | |
81 | b827df58 | Avi Kivity | if (!kvm_check_extension(env->kvm_state, KVM_CAP_EXT_CPUID)) {
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82 | b827df58 | Avi Kivity | return -1U; |
83 | b827df58 | Avi Kivity | } |
84 | b827df58 | Avi Kivity | |
85 | b827df58 | Avi Kivity | max = 1;
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86 | b827df58 | Avi Kivity | while ((cpuid = try_get_cpuid(env->kvm_state, max)) == NULL) { |
87 | b827df58 | Avi Kivity | max *= 2;
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88 | b827df58 | Avi Kivity | } |
89 | b827df58 | Avi Kivity | |
90 | b827df58 | Avi Kivity | for (i = 0; i < cpuid->nent; ++i) { |
91 | b827df58 | Avi Kivity | if (cpuid->entries[i].function == function) {
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92 | b827df58 | Avi Kivity | switch (reg) {
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93 | b827df58 | Avi Kivity | case R_EAX:
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94 | b827df58 | Avi Kivity | ret = cpuid->entries[i].eax; |
95 | b827df58 | Avi Kivity | break;
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96 | b827df58 | Avi Kivity | case R_EBX:
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97 | b827df58 | Avi Kivity | ret = cpuid->entries[i].ebx; |
98 | b827df58 | Avi Kivity | break;
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99 | b827df58 | Avi Kivity | case R_ECX:
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100 | b827df58 | Avi Kivity | ret = cpuid->entries[i].ecx; |
101 | b827df58 | Avi Kivity | break;
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102 | b827df58 | Avi Kivity | case R_EDX:
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103 | b827df58 | Avi Kivity | ret = cpuid->entries[i].edx; |
104 | 19ccb8ea | Jan Kiszka | switch (function) {
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105 | 19ccb8ea | Jan Kiszka | case 1: |
106 | 19ccb8ea | Jan Kiszka | /* KVM before 2.6.30 misreports the following features */
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107 | 19ccb8ea | Jan Kiszka | ret |= CPUID_MTRR | CPUID_PAT | CPUID_MCE | CPUID_MCA; |
108 | 19ccb8ea | Jan Kiszka | break;
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109 | 19ccb8ea | Jan Kiszka | case 0x80000001: |
110 | b827df58 | Avi Kivity | /* On Intel, kvm returns cpuid according to the Intel spec,
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111 | b827df58 | Avi Kivity | * so add missing bits according to the AMD spec:
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112 | b827df58 | Avi Kivity | */
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113 | b827df58 | Avi Kivity | cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, R_EDX);
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114 | b827df58 | Avi Kivity | ret |= cpuid_1_edx & 0xdfeff7ff;
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115 | 19ccb8ea | Jan Kiszka | break;
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116 | b827df58 | Avi Kivity | } |
117 | b827df58 | Avi Kivity | break;
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118 | b827df58 | Avi Kivity | } |
119 | b827df58 | Avi Kivity | } |
120 | b827df58 | Avi Kivity | } |
121 | b827df58 | Avi Kivity | |
122 | b827df58 | Avi Kivity | qemu_free(cpuid); |
123 | b827df58 | Avi Kivity | |
124 | b827df58 | Avi Kivity | return ret;
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125 | b827df58 | Avi Kivity | } |
126 | b827df58 | Avi Kivity | |
127 | b827df58 | Avi Kivity | #else
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128 | b827df58 | Avi Kivity | |
129 | b827df58 | Avi Kivity | uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
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130 | b827df58 | Avi Kivity | { |
131 | b827df58 | Avi Kivity | return -1U; |
132 | b827df58 | Avi Kivity | } |
133 | b827df58 | Avi Kivity | |
134 | b827df58 | Avi Kivity | #endif
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135 | b827df58 | Avi Kivity | |
136 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
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137 | bb0300dc | Gleb Natapov | struct kvm_para_features {
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138 | bb0300dc | Gleb Natapov | int cap;
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139 | bb0300dc | Gleb Natapov | int feature;
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140 | bb0300dc | Gleb Natapov | } para_features[] = { |
141 | bb0300dc | Gleb Natapov | #ifdef KVM_CAP_CLOCKSOURCE
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142 | bb0300dc | Gleb Natapov | { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE }, |
143 | bb0300dc | Gleb Natapov | #endif
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144 | bb0300dc | Gleb Natapov | #ifdef KVM_CAP_NOP_IO_DELAY
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145 | bb0300dc | Gleb Natapov | { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY }, |
146 | bb0300dc | Gleb Natapov | #endif
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147 | bb0300dc | Gleb Natapov | #ifdef KVM_CAP_PV_MMU
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148 | bb0300dc | Gleb Natapov | { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP }, |
149 | bb0300dc | Gleb Natapov | #endif
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150 | bb0300dc | Gleb Natapov | { -1, -1 } |
151 | bb0300dc | Gleb Natapov | }; |
152 | bb0300dc | Gleb Natapov | |
153 | bb0300dc | Gleb Natapov | static int get_para_features(CPUState *env) |
154 | bb0300dc | Gleb Natapov | { |
155 | bb0300dc | Gleb Natapov | int i, features = 0; |
156 | bb0300dc | Gleb Natapov | |
157 | bb0300dc | Gleb Natapov | for (i = 0; i < ARRAY_SIZE(para_features) - 1; i++) { |
158 | bb0300dc | Gleb Natapov | if (kvm_check_extension(env->kvm_state, para_features[i].cap))
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159 | bb0300dc | Gleb Natapov | features |= (1 << para_features[i].feature);
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160 | bb0300dc | Gleb Natapov | } |
161 | bb0300dc | Gleb Natapov | |
162 | bb0300dc | Gleb Natapov | return features;
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163 | bb0300dc | Gleb Natapov | } |
164 | bb0300dc | Gleb Natapov | #endif
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165 | bb0300dc | Gleb Natapov | |
166 | 05330448 | aliguori | int kvm_arch_init_vcpu(CPUState *env)
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167 | 05330448 | aliguori | { |
168 | 05330448 | aliguori | struct {
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169 | 486bd5a2 | aliguori | struct kvm_cpuid2 cpuid;
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170 | 486bd5a2 | aliguori | struct kvm_cpuid_entry2 entries[100]; |
171 | 05330448 | aliguori | } __attribute__((packed)) cpuid_data; |
172 | 486bd5a2 | aliguori | uint32_t limit, i, j, cpuid_i; |
173 | a33609ca | aliguori | uint32_t unused; |
174 | bb0300dc | Gleb Natapov | struct kvm_cpuid_entry2 *c;
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175 | bb0300dc | Gleb Natapov | #ifdef KVM_CPUID_SIGNATURE
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176 | bb0300dc | Gleb Natapov | uint32_t signature[3];
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177 | bb0300dc | Gleb Natapov | #endif
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178 | 05330448 | aliguori | |
179 | f8d926e9 | Jan Kiszka | env->mp_state = KVM_MP_STATE_RUNNABLE; |
180 | f8d926e9 | Jan Kiszka | |
181 | 457dfed6 | Andre Przywara | env->cpuid_features &= kvm_arch_get_supported_cpuid(env, 1, R_EDX);
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182 | 6c0d7ee8 | Andre Przywara | |
183 | 6c0d7ee8 | Andre Przywara | i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR; |
184 | 457dfed6 | Andre Przywara | env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(env, 1, R_ECX);
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185 | 6c0d7ee8 | Andre Przywara | env->cpuid_ext_features |= i; |
186 | 6c0d7ee8 | Andre Przywara | |
187 | 457dfed6 | Andre Przywara | env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
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188 | 457dfed6 | Andre Przywara | R_EDX); |
189 | 457dfed6 | Andre Przywara | env->cpuid_ext3_features &= kvm_arch_get_supported_cpuid(env, 0x80000001,
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190 | 457dfed6 | Andre Przywara | R_ECX); |
191 | 6c1f42fe | Andre Przywara | |
192 | 05330448 | aliguori | cpuid_i = 0;
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193 | 05330448 | aliguori | |
194 | bb0300dc | Gleb Natapov | #ifdef CONFIG_KVM_PARA
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195 | bb0300dc | Gleb Natapov | /* Paravirtualization CPUIDs */
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196 | bb0300dc | Gleb Natapov | memcpy(signature, "KVMKVMKVM\0\0\0", 12); |
197 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
198 | bb0300dc | Gleb Natapov | memset(c, 0, sizeof(*c)); |
199 | bb0300dc | Gleb Natapov | c->function = KVM_CPUID_SIGNATURE; |
200 | bb0300dc | Gleb Natapov | c->eax = 0;
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201 | bb0300dc | Gleb Natapov | c->ebx = signature[0];
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202 | bb0300dc | Gleb Natapov | c->ecx = signature[1];
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203 | bb0300dc | Gleb Natapov | c->edx = signature[2];
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204 | bb0300dc | Gleb Natapov | |
205 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
206 | bb0300dc | Gleb Natapov | memset(c, 0, sizeof(*c)); |
207 | bb0300dc | Gleb Natapov | c->function = KVM_CPUID_FEATURES; |
208 | bb0300dc | Gleb Natapov | c->eax = env->cpuid_kvm_features & get_para_features(env); |
209 | bb0300dc | Gleb Natapov | #endif
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210 | bb0300dc | Gleb Natapov | |
211 | a33609ca | aliguori | cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused); |
212 | 05330448 | aliguori | |
213 | 05330448 | aliguori | for (i = 0; i <= limit; i++) { |
214 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
215 | 486bd5a2 | aliguori | |
216 | 486bd5a2 | aliguori | switch (i) {
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217 | a36b1029 | aliguori | case 2: { |
218 | a36b1029 | aliguori | /* Keep reading function 2 till all the input is received */
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219 | a36b1029 | aliguori | int times;
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220 | a36b1029 | aliguori | |
221 | a36b1029 | aliguori | c->function = i; |
222 | a33609ca | aliguori | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC | |
223 | a33609ca | aliguori | KVM_CPUID_FLAG_STATE_READ_NEXT; |
224 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
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225 | a33609ca | aliguori | times = c->eax & 0xff;
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226 | a36b1029 | aliguori | |
227 | a36b1029 | aliguori | for (j = 1; j < times; ++j) { |
228 | a33609ca | aliguori | c = &cpuid_data.entries[cpuid_i++]; |
229 | a36b1029 | aliguori | c->function = i; |
230 | a33609ca | aliguori | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC; |
231 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
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232 | a36b1029 | aliguori | } |
233 | a36b1029 | aliguori | break;
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234 | a36b1029 | aliguori | } |
235 | 486bd5a2 | aliguori | case 4: |
236 | 486bd5a2 | aliguori | case 0xb: |
237 | 486bd5a2 | aliguori | case 0xd: |
238 | 486bd5a2 | aliguori | for (j = 0; ; j++) { |
239 | 486bd5a2 | aliguori | c->function = i; |
240 | 486bd5a2 | aliguori | c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; |
241 | 486bd5a2 | aliguori | c->index = j; |
242 | a33609ca | aliguori | cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->edx); |
243 | 486bd5a2 | aliguori | |
244 | a33609ca | aliguori | if (i == 4 && c->eax == 0) |
245 | 486bd5a2 | aliguori | break;
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246 | a33609ca | aliguori | if (i == 0xb && !(c->ecx & 0xff00)) |
247 | 486bd5a2 | aliguori | break;
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248 | a33609ca | aliguori | if (i == 0xd && c->eax == 0) |
249 | 486bd5a2 | aliguori | break;
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250 | a33609ca | aliguori | |
251 | a33609ca | aliguori | c = &cpuid_data.entries[cpuid_i++]; |
252 | 486bd5a2 | aliguori | } |
253 | 486bd5a2 | aliguori | break;
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254 | 486bd5a2 | aliguori | default:
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255 | 486bd5a2 | aliguori | c->function = i; |
256 | a33609ca | aliguori | c->flags = 0;
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257 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
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258 | 486bd5a2 | aliguori | break;
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259 | 486bd5a2 | aliguori | } |
260 | 05330448 | aliguori | } |
261 | a33609ca | aliguori | cpu_x86_cpuid(env, 0x80000000, 0, &limit, &unused, &unused, &unused); |
262 | 05330448 | aliguori | |
263 | 05330448 | aliguori | for (i = 0x80000000; i <= limit; i++) { |
264 | bb0300dc | Gleb Natapov | c = &cpuid_data.entries[cpuid_i++]; |
265 | 05330448 | aliguori | |
266 | 05330448 | aliguori | c->function = i; |
267 | a33609ca | aliguori | c->flags = 0;
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268 | a33609ca | aliguori | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
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269 | 05330448 | aliguori | } |
270 | 05330448 | aliguori | |
271 | 05330448 | aliguori | cpuid_data.cpuid.nent = cpuid_i; |
272 | 05330448 | aliguori | |
273 | 486bd5a2 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data);
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274 | 05330448 | aliguori | } |
275 | 05330448 | aliguori | |
276 | caa5af0f | Jan Kiszka | void kvm_arch_reset_vcpu(CPUState *env)
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277 | caa5af0f | Jan Kiszka | { |
278 | e73223a5 | Gleb Natapov | env->exception_injected = -1;
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279 | 0e607a80 | Jan Kiszka | env->interrupt_injected = -1;
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280 | a0fb002c | Jan Kiszka | env->nmi_injected = 0;
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281 | a0fb002c | Jan Kiszka | env->nmi_pending = 0;
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282 | caa5af0f | Jan Kiszka | } |
283 | caa5af0f | Jan Kiszka | |
284 | 05330448 | aliguori | static int kvm_has_msr_star(CPUState *env) |
285 | 05330448 | aliguori | { |
286 | 05330448 | aliguori | static int has_msr_star; |
287 | 05330448 | aliguori | int ret;
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288 | 05330448 | aliguori | |
289 | 05330448 | aliguori | /* first time */
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290 | 05330448 | aliguori | if (has_msr_star == 0) { |
291 | 05330448 | aliguori | struct kvm_msr_list msr_list, *kvm_msr_list;
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292 | 05330448 | aliguori | |
293 | 05330448 | aliguori | has_msr_star = -1;
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294 | 05330448 | aliguori | |
295 | 05330448 | aliguori | /* Obtain MSR list from KVM. These are the MSRs that we must
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296 | 05330448 | aliguori | * save/restore */
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297 | 4c9f7372 | aliguori | msr_list.nmsrs = 0;
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298 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, &msr_list); |
299 | 6fb6d245 | Jan Kiszka | if (ret < 0 && ret != -E2BIG) { |
300 | 05330448 | aliguori | return 0; |
301 | 6fb6d245 | Jan Kiszka | } |
302 | d9db889f | Jan Kiszka | /* Old kernel modules had a bug and could write beyond the provided
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303 | d9db889f | Jan Kiszka | memory. Allocate at least a safe amount of 1K. */
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304 | d9db889f | Jan Kiszka | kvm_msr_list = qemu_mallocz(MAX(1024, sizeof(msr_list) + |
305 | d9db889f | Jan Kiszka | msr_list.nmsrs * |
306 | d9db889f | Jan Kiszka | sizeof(msr_list.indices[0]))); |
307 | 05330448 | aliguori | |
308 | 55308450 | aliguori | kvm_msr_list->nmsrs = msr_list.nmsrs; |
309 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); |
310 | 05330448 | aliguori | if (ret >= 0) { |
311 | 05330448 | aliguori | int i;
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312 | 05330448 | aliguori | |
313 | 05330448 | aliguori | for (i = 0; i < kvm_msr_list->nmsrs; i++) { |
314 | 05330448 | aliguori | if (kvm_msr_list->indices[i] == MSR_STAR) {
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315 | 05330448 | aliguori | has_msr_star = 1;
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316 | 05330448 | aliguori | break;
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317 | 05330448 | aliguori | } |
318 | 05330448 | aliguori | } |
319 | 05330448 | aliguori | } |
320 | 05330448 | aliguori | |
321 | 05330448 | aliguori | free(kvm_msr_list); |
322 | 05330448 | aliguori | } |
323 | 05330448 | aliguori | |
324 | 05330448 | aliguori | if (has_msr_star == 1) |
325 | 05330448 | aliguori | return 1; |
326 | 05330448 | aliguori | return 0; |
327 | 05330448 | aliguori | } |
328 | 05330448 | aliguori | |
329 | 05330448 | aliguori | int kvm_arch_init(KVMState *s, int smp_cpus) |
330 | 05330448 | aliguori | { |
331 | 05330448 | aliguori | int ret;
|
332 | 05330448 | aliguori | |
333 | 05330448 | aliguori | /* create vm86 tss. KVM uses vm86 mode to emulate 16-bit code
|
334 | 05330448 | aliguori | * directly. In order to use vm86 mode, a TSS is needed. Since this
|
335 | 05330448 | aliguori | * must be part of guest physical memory, we need to allocate it. Older
|
336 | 05330448 | aliguori | * versions of KVM just assumed that it would be at the end of physical
|
337 | 05330448 | aliguori | * memory but that doesn't work with more than 4GB of memory. We simply
|
338 | 05330448 | aliguori | * refuse to work with those older versions of KVM. */
|
339 | 984b5181 | aliguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_SET_TSS_ADDR); |
340 | 05330448 | aliguori | if (ret <= 0) { |
341 | 05330448 | aliguori | fprintf(stderr, "kvm does not support KVM_CAP_SET_TSS_ADDR\n");
|
342 | 05330448 | aliguori | return ret;
|
343 | 05330448 | aliguori | } |
344 | 05330448 | aliguori | |
345 | 05330448 | aliguori | /* this address is 3 pages before the bios, and the bios should present
|
346 | 05330448 | aliguori | * as unavaible memory. FIXME, need to ensure the e820 map deals with
|
347 | 05330448 | aliguori | * this?
|
348 | 05330448 | aliguori | */
|
349 | 4c5b10b7 | Jes Sorensen | /*
|
350 | 4c5b10b7 | Jes Sorensen | * Tell fw_cfg to notify the BIOS to reserve the range.
|
351 | 4c5b10b7 | Jes Sorensen | */
|
352 | 4c5b10b7 | Jes Sorensen | if (e820_add_entry(0xfffbc000, 0x4000, E820_RESERVED) < 0) { |
353 | 4c5b10b7 | Jes Sorensen | perror("e820_add_entry() table is full");
|
354 | 4c5b10b7 | Jes Sorensen | exit(1);
|
355 | 4c5b10b7 | Jes Sorensen | } |
356 | 984b5181 | aliguori | return kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000); |
357 | 05330448 | aliguori | } |
358 | 05330448 | aliguori | |
359 | 05330448 | aliguori | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
360 | 05330448 | aliguori | { |
361 | 05330448 | aliguori | lhs->selector = rhs->selector; |
362 | 05330448 | aliguori | lhs->base = rhs->base; |
363 | 05330448 | aliguori | lhs->limit = rhs->limit; |
364 | 05330448 | aliguori | lhs->type = 3;
|
365 | 05330448 | aliguori | lhs->present = 1;
|
366 | 05330448 | aliguori | lhs->dpl = 3;
|
367 | 05330448 | aliguori | lhs->db = 0;
|
368 | 05330448 | aliguori | lhs->s = 1;
|
369 | 05330448 | aliguori | lhs->l = 0;
|
370 | 05330448 | aliguori | lhs->g = 0;
|
371 | 05330448 | aliguori | lhs->avl = 0;
|
372 | 05330448 | aliguori | lhs->unusable = 0;
|
373 | 05330448 | aliguori | } |
374 | 05330448 | aliguori | |
375 | 05330448 | aliguori | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
376 | 05330448 | aliguori | { |
377 | 05330448 | aliguori | unsigned flags = rhs->flags;
|
378 | 05330448 | aliguori | lhs->selector = rhs->selector; |
379 | 05330448 | aliguori | lhs->base = rhs->base; |
380 | 05330448 | aliguori | lhs->limit = rhs->limit; |
381 | 05330448 | aliguori | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
|
382 | 05330448 | aliguori | lhs->present = (flags & DESC_P_MASK) != 0;
|
383 | 05330448 | aliguori | lhs->dpl = rhs->selector & 3;
|
384 | 05330448 | aliguori | lhs->db = (flags >> DESC_B_SHIFT) & 1;
|
385 | 05330448 | aliguori | lhs->s = (flags & DESC_S_MASK) != 0;
|
386 | 05330448 | aliguori | lhs->l = (flags >> DESC_L_SHIFT) & 1;
|
387 | 05330448 | aliguori | lhs->g = (flags & DESC_G_MASK) != 0;
|
388 | 05330448 | aliguori | lhs->avl = (flags & DESC_AVL_MASK) != 0;
|
389 | 05330448 | aliguori | lhs->unusable = 0;
|
390 | 05330448 | aliguori | } |
391 | 05330448 | aliguori | |
392 | 05330448 | aliguori | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) |
393 | 05330448 | aliguori | { |
394 | 05330448 | aliguori | lhs->selector = rhs->selector; |
395 | 05330448 | aliguori | lhs->base = rhs->base; |
396 | 05330448 | aliguori | lhs->limit = rhs->limit; |
397 | 05330448 | aliguori | lhs->flags = |
398 | 05330448 | aliguori | (rhs->type << DESC_TYPE_SHIFT) |
399 | 05330448 | aliguori | | (rhs->present * DESC_P_MASK) |
400 | 05330448 | aliguori | | (rhs->dpl << DESC_DPL_SHIFT) |
401 | 05330448 | aliguori | | (rhs->db << DESC_B_SHIFT) |
402 | 05330448 | aliguori | | (rhs->s * DESC_S_MASK) |
403 | 05330448 | aliguori | | (rhs->l << DESC_L_SHIFT) |
404 | 05330448 | aliguori | | (rhs->g * DESC_G_MASK) |
405 | 05330448 | aliguori | | (rhs->avl * DESC_AVL_MASK); |
406 | 05330448 | aliguori | } |
407 | 05330448 | aliguori | |
408 | 05330448 | aliguori | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) |
409 | 05330448 | aliguori | { |
410 | 05330448 | aliguori | if (set)
|
411 | 05330448 | aliguori | *kvm_reg = *qemu_reg; |
412 | 05330448 | aliguori | else
|
413 | 05330448 | aliguori | *qemu_reg = *kvm_reg; |
414 | 05330448 | aliguori | } |
415 | 05330448 | aliguori | |
416 | 05330448 | aliguori | static int kvm_getput_regs(CPUState *env, int set) |
417 | 05330448 | aliguori | { |
418 | 05330448 | aliguori | struct kvm_regs regs;
|
419 | 05330448 | aliguori | int ret = 0; |
420 | 05330448 | aliguori | |
421 | 05330448 | aliguori | if (!set) {
|
422 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
423 | 05330448 | aliguori | if (ret < 0) |
424 | 05330448 | aliguori | return ret;
|
425 | 05330448 | aliguori | } |
426 | 05330448 | aliguori | |
427 | 05330448 | aliguori | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); |
428 | 05330448 | aliguori | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); |
429 | 05330448 | aliguori | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); |
430 | 05330448 | aliguori | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); |
431 | 05330448 | aliguori | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); |
432 | 05330448 | aliguori | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); |
433 | 05330448 | aliguori | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); |
434 | 05330448 | aliguori | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); |
435 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
436 | 05330448 | aliguori | kvm_getput_reg(®s.r8, &env->regs[8], set);
|
437 | 05330448 | aliguori | kvm_getput_reg(®s.r9, &env->regs[9], set);
|
438 | 05330448 | aliguori | kvm_getput_reg(®s.r10, &env->regs[10], set);
|
439 | 05330448 | aliguori | kvm_getput_reg(®s.r11, &env->regs[11], set);
|
440 | 05330448 | aliguori | kvm_getput_reg(®s.r12, &env->regs[12], set);
|
441 | 05330448 | aliguori | kvm_getput_reg(®s.r13, &env->regs[13], set);
|
442 | 05330448 | aliguori | kvm_getput_reg(®s.r14, &env->regs[14], set);
|
443 | 05330448 | aliguori | kvm_getput_reg(®s.r15, &env->regs[15], set);
|
444 | 05330448 | aliguori | #endif
|
445 | 05330448 | aliguori | |
446 | 05330448 | aliguori | kvm_getput_reg(®s.rflags, &env->eflags, set); |
447 | 05330448 | aliguori | kvm_getput_reg(®s.rip, &env->eip, set); |
448 | 05330448 | aliguori | |
449 | 05330448 | aliguori | if (set)
|
450 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
451 | 05330448 | aliguori | |
452 | 05330448 | aliguori | return ret;
|
453 | 05330448 | aliguori | } |
454 | 05330448 | aliguori | |
455 | 05330448 | aliguori | static int kvm_put_fpu(CPUState *env) |
456 | 05330448 | aliguori | { |
457 | 05330448 | aliguori | struct kvm_fpu fpu;
|
458 | 05330448 | aliguori | int i;
|
459 | 05330448 | aliguori | |
460 | 05330448 | aliguori | memset(&fpu, 0, sizeof fpu); |
461 | 05330448 | aliguori | fpu.fsw = env->fpus & ~(7 << 11); |
462 | 05330448 | aliguori | fpu.fsw |= (env->fpstt & 7) << 11; |
463 | 05330448 | aliguori | fpu.fcw = env->fpuc; |
464 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
465 | 05330448 | aliguori | fpu.ftwx |= (!env->fptags[i]) << i; |
466 | 05330448 | aliguori | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs);
|
467 | 05330448 | aliguori | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs);
|
468 | 05330448 | aliguori | fpu.mxcsr = env->mxcsr; |
469 | 05330448 | aliguori | |
470 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
|
471 | 05330448 | aliguori | } |
472 | 05330448 | aliguori | |
473 | 05330448 | aliguori | static int kvm_put_sregs(CPUState *env) |
474 | 05330448 | aliguori | { |
475 | 05330448 | aliguori | struct kvm_sregs sregs;
|
476 | 05330448 | aliguori | |
477 | 0e607a80 | Jan Kiszka | memset(sregs.interrupt_bitmap, 0, sizeof(sregs.interrupt_bitmap)); |
478 | 0e607a80 | Jan Kiszka | if (env->interrupt_injected >= 0) { |
479 | 0e607a80 | Jan Kiszka | sregs.interrupt_bitmap[env->interrupt_injected / 64] |=
|
480 | 0e607a80 | Jan Kiszka | (uint64_t)1 << (env->interrupt_injected % 64); |
481 | 0e607a80 | Jan Kiszka | } |
482 | 05330448 | aliguori | |
483 | 05330448 | aliguori | if ((env->eflags & VM_MASK)) {
|
484 | 05330448 | aliguori | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
485 | 05330448 | aliguori | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); |
486 | 05330448 | aliguori | set_v8086_seg(&sregs.es, &env->segs[R_ES]); |
487 | 05330448 | aliguori | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); |
488 | 05330448 | aliguori | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); |
489 | 05330448 | aliguori | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); |
490 | 05330448 | aliguori | } else {
|
491 | 05330448 | aliguori | set_seg(&sregs.cs, &env->segs[R_CS]); |
492 | 05330448 | aliguori | set_seg(&sregs.ds, &env->segs[R_DS]); |
493 | 05330448 | aliguori | set_seg(&sregs.es, &env->segs[R_ES]); |
494 | 05330448 | aliguori | set_seg(&sregs.fs, &env->segs[R_FS]); |
495 | 05330448 | aliguori | set_seg(&sregs.gs, &env->segs[R_GS]); |
496 | 05330448 | aliguori | set_seg(&sregs.ss, &env->segs[R_SS]); |
497 | 05330448 | aliguori | |
498 | 05330448 | aliguori | if (env->cr[0] & CR0_PE_MASK) { |
499 | 05330448 | aliguori | /* force ss cpl to cs cpl */
|
500 | 05330448 | aliguori | sregs.ss.selector = (sregs.ss.selector & ~3) |
|
501 | 05330448 | aliguori | (sregs.cs.selector & 3);
|
502 | 05330448 | aliguori | sregs.ss.dpl = sregs.ss.selector & 3;
|
503 | 05330448 | aliguori | } |
504 | 05330448 | aliguori | } |
505 | 05330448 | aliguori | |
506 | 05330448 | aliguori | set_seg(&sregs.tr, &env->tr); |
507 | 05330448 | aliguori | set_seg(&sregs.ldt, &env->ldt); |
508 | 05330448 | aliguori | |
509 | 05330448 | aliguori | sregs.idt.limit = env->idt.limit; |
510 | 05330448 | aliguori | sregs.idt.base = env->idt.base; |
511 | 05330448 | aliguori | sregs.gdt.limit = env->gdt.limit; |
512 | 05330448 | aliguori | sregs.gdt.base = env->gdt.base; |
513 | 05330448 | aliguori | |
514 | 05330448 | aliguori | sregs.cr0 = env->cr[0];
|
515 | 05330448 | aliguori | sregs.cr2 = env->cr[2];
|
516 | 05330448 | aliguori | sregs.cr3 = env->cr[3];
|
517 | 05330448 | aliguori | sregs.cr4 = env->cr[4];
|
518 | 05330448 | aliguori | |
519 | 05330448 | aliguori | sregs.cr8 = cpu_get_apic_tpr(env); |
520 | 05330448 | aliguori | sregs.apic_base = cpu_get_apic_base(env); |
521 | 05330448 | aliguori | |
522 | 05330448 | aliguori | sregs.efer = env->efer; |
523 | 05330448 | aliguori | |
524 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
|
525 | 05330448 | aliguori | } |
526 | 05330448 | aliguori | |
527 | 05330448 | aliguori | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, |
528 | 05330448 | aliguori | uint32_t index, uint64_t value) |
529 | 05330448 | aliguori | { |
530 | 05330448 | aliguori | entry->index = index; |
531 | 05330448 | aliguori | entry->data = value; |
532 | 05330448 | aliguori | } |
533 | 05330448 | aliguori | |
534 | ea643051 | Jan Kiszka | static int kvm_put_msrs(CPUState *env, int level) |
535 | 05330448 | aliguori | { |
536 | 05330448 | aliguori | struct {
|
537 | 05330448 | aliguori | struct kvm_msrs info;
|
538 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
539 | 05330448 | aliguori | } msr_data; |
540 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
541 | 05330448 | aliguori | int n = 0; |
542 | 05330448 | aliguori | |
543 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); |
544 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); |
545 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); |
546 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
547 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
548 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
549 | 05330448 | aliguori | /* FIXME if lm capable */
|
550 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); |
551 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); |
552 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); |
553 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); |
554 | 05330448 | aliguori | #endif
|
555 | ea643051 | Jan Kiszka | if (level == KVM_PUT_FULL_STATE) {
|
556 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); |
557 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_SYSTEM_TIME, |
558 | ea643051 | Jan Kiszka | env->system_time_msr); |
559 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_WALL_CLOCK, env->wall_clock_msr); |
560 | ea643051 | Jan Kiszka | } |
561 | 1a03675d | Glauber Costa | |
562 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
563 | 05330448 | aliguori | |
564 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data);
|
565 | 05330448 | aliguori | |
566 | 05330448 | aliguori | } |
567 | 05330448 | aliguori | |
568 | 05330448 | aliguori | |
569 | 05330448 | aliguori | static int kvm_get_fpu(CPUState *env) |
570 | 05330448 | aliguori | { |
571 | 05330448 | aliguori | struct kvm_fpu fpu;
|
572 | 05330448 | aliguori | int i, ret;
|
573 | 05330448 | aliguori | |
574 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); |
575 | 05330448 | aliguori | if (ret < 0) |
576 | 05330448 | aliguori | return ret;
|
577 | 05330448 | aliguori | |
578 | 05330448 | aliguori | env->fpstt = (fpu.fsw >> 11) & 7; |
579 | 05330448 | aliguori | env->fpus = fpu.fsw; |
580 | 05330448 | aliguori | env->fpuc = fpu.fcw; |
581 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
582 | 05330448 | aliguori | env->fptags[i] = !((fpu.ftwx >> i) & 1);
|
583 | 05330448 | aliguori | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs);
|
584 | 05330448 | aliguori | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs);
|
585 | 05330448 | aliguori | env->mxcsr = fpu.mxcsr; |
586 | 05330448 | aliguori | |
587 | 05330448 | aliguori | return 0; |
588 | 05330448 | aliguori | } |
589 | 05330448 | aliguori | |
590 | 05330448 | aliguori | static int kvm_get_sregs(CPUState *env) |
591 | 05330448 | aliguori | { |
592 | 05330448 | aliguori | struct kvm_sregs sregs;
|
593 | 05330448 | aliguori | uint32_t hflags; |
594 | 0e607a80 | Jan Kiszka | int bit, i, ret;
|
595 | 05330448 | aliguori | |
596 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
597 | 05330448 | aliguori | if (ret < 0) |
598 | 05330448 | aliguori | return ret;
|
599 | 05330448 | aliguori | |
600 | 0e607a80 | Jan Kiszka | /* There can only be one pending IRQ set in the bitmap at a time, so try
|
601 | 0e607a80 | Jan Kiszka | to find it and save its number instead (-1 for none). */
|
602 | 0e607a80 | Jan Kiszka | env->interrupt_injected = -1;
|
603 | 0e607a80 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(sregs.interrupt_bitmap); i++) { |
604 | 0e607a80 | Jan Kiszka | if (sregs.interrupt_bitmap[i]) {
|
605 | 0e607a80 | Jan Kiszka | bit = ctz64(sregs.interrupt_bitmap[i]); |
606 | 0e607a80 | Jan Kiszka | env->interrupt_injected = i * 64 + bit;
|
607 | 0e607a80 | Jan Kiszka | break;
|
608 | 0e607a80 | Jan Kiszka | } |
609 | 0e607a80 | Jan Kiszka | } |
610 | 05330448 | aliguori | |
611 | 05330448 | aliguori | get_seg(&env->segs[R_CS], &sregs.cs); |
612 | 05330448 | aliguori | get_seg(&env->segs[R_DS], &sregs.ds); |
613 | 05330448 | aliguori | get_seg(&env->segs[R_ES], &sregs.es); |
614 | 05330448 | aliguori | get_seg(&env->segs[R_FS], &sregs.fs); |
615 | 05330448 | aliguori | get_seg(&env->segs[R_GS], &sregs.gs); |
616 | 05330448 | aliguori | get_seg(&env->segs[R_SS], &sregs.ss); |
617 | 05330448 | aliguori | |
618 | 05330448 | aliguori | get_seg(&env->tr, &sregs.tr); |
619 | 05330448 | aliguori | get_seg(&env->ldt, &sregs.ldt); |
620 | 05330448 | aliguori | |
621 | 05330448 | aliguori | env->idt.limit = sregs.idt.limit; |
622 | 05330448 | aliguori | env->idt.base = sregs.idt.base; |
623 | 05330448 | aliguori | env->gdt.limit = sregs.gdt.limit; |
624 | 05330448 | aliguori | env->gdt.base = sregs.gdt.base; |
625 | 05330448 | aliguori | |
626 | 05330448 | aliguori | env->cr[0] = sregs.cr0;
|
627 | 05330448 | aliguori | env->cr[2] = sregs.cr2;
|
628 | 05330448 | aliguori | env->cr[3] = sregs.cr3;
|
629 | 05330448 | aliguori | env->cr[4] = sregs.cr4;
|
630 | 05330448 | aliguori | |
631 | 05330448 | aliguori | cpu_set_apic_base(env, sregs.apic_base); |
632 | 05330448 | aliguori | |
633 | 05330448 | aliguori | env->efer = sregs.efer; |
634 | 05330448 | aliguori | //cpu_set_apic_tpr(env, sregs.cr8);
|
635 | 05330448 | aliguori | |
636 | 05330448 | aliguori | #define HFLAG_COPY_MASK ~( \
|
637 | 05330448 | aliguori | HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ |
638 | 05330448 | aliguori | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ |
639 | 05330448 | aliguori | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ |
640 | 05330448 | aliguori | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) |
641 | 05330448 | aliguori | |
642 | 05330448 | aliguori | |
643 | 05330448 | aliguori | |
644 | 05330448 | aliguori | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; |
645 | 05330448 | aliguori | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT);
|
646 | 05330448 | aliguori | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) &
|
647 | 05330448 | aliguori | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
648 | 05330448 | aliguori | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
649 | 05330448 | aliguori | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) <<
|
650 | 05330448 | aliguori | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
651 | 05330448 | aliguori | |
652 | 05330448 | aliguori | if (env->efer & MSR_EFER_LMA) {
|
653 | 05330448 | aliguori | hflags |= HF_LMA_MASK; |
654 | 05330448 | aliguori | } |
655 | 05330448 | aliguori | |
656 | 05330448 | aliguori | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) {
|
657 | 05330448 | aliguori | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
658 | 05330448 | aliguori | } else {
|
659 | 05330448 | aliguori | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> |
660 | 05330448 | aliguori | (DESC_B_SHIFT - HF_CS32_SHIFT); |
661 | 05330448 | aliguori | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
662 | 05330448 | aliguori | (DESC_B_SHIFT - HF_SS32_SHIFT); |
663 | 05330448 | aliguori | if (!(env->cr[0] & CR0_PE_MASK) || |
664 | 05330448 | aliguori | (env->eflags & VM_MASK) || |
665 | 05330448 | aliguori | !(hflags & HF_CS32_MASK)) { |
666 | 05330448 | aliguori | hflags |= HF_ADDSEG_MASK; |
667 | 05330448 | aliguori | } else {
|
668 | 05330448 | aliguori | hflags |= ((env->segs[R_DS].base | |
669 | 05330448 | aliguori | env->segs[R_ES].base | |
670 | 05330448 | aliguori | env->segs[R_SS].base) != 0) <<
|
671 | 05330448 | aliguori | HF_ADDSEG_SHIFT; |
672 | 05330448 | aliguori | } |
673 | 05330448 | aliguori | } |
674 | 05330448 | aliguori | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; |
675 | 05330448 | aliguori | |
676 | 05330448 | aliguori | return 0; |
677 | 05330448 | aliguori | } |
678 | 05330448 | aliguori | |
679 | 05330448 | aliguori | static int kvm_get_msrs(CPUState *env) |
680 | 05330448 | aliguori | { |
681 | 05330448 | aliguori | struct {
|
682 | 05330448 | aliguori | struct kvm_msrs info;
|
683 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
684 | 05330448 | aliguori | } msr_data; |
685 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
686 | 05330448 | aliguori | int ret, i, n;
|
687 | 05330448 | aliguori | |
688 | 05330448 | aliguori | n = 0;
|
689 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_CS; |
690 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_ESP; |
691 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_EIP; |
692 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
693 | 05330448 | aliguori | msrs[n++].index = MSR_STAR; |
694 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_TSC; |
695 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
696 | 05330448 | aliguori | /* FIXME lm_capable_kernel */
|
697 | 05330448 | aliguori | msrs[n++].index = MSR_CSTAR; |
698 | 05330448 | aliguori | msrs[n++].index = MSR_KERNELGSBASE; |
699 | 05330448 | aliguori | msrs[n++].index = MSR_FMASK; |
700 | 05330448 | aliguori | msrs[n++].index = MSR_LSTAR; |
701 | 05330448 | aliguori | #endif
|
702 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_SYSTEM_TIME; |
703 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_WALL_CLOCK; |
704 | 1a03675d | Glauber Costa | |
705 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
706 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); |
707 | 05330448 | aliguori | if (ret < 0) |
708 | 05330448 | aliguori | return ret;
|
709 | 05330448 | aliguori | |
710 | 05330448 | aliguori | for (i = 0; i < ret; i++) { |
711 | 05330448 | aliguori | switch (msrs[i].index) {
|
712 | 05330448 | aliguori | case MSR_IA32_SYSENTER_CS:
|
713 | 05330448 | aliguori | env->sysenter_cs = msrs[i].data; |
714 | 05330448 | aliguori | break;
|
715 | 05330448 | aliguori | case MSR_IA32_SYSENTER_ESP:
|
716 | 05330448 | aliguori | env->sysenter_esp = msrs[i].data; |
717 | 05330448 | aliguori | break;
|
718 | 05330448 | aliguori | case MSR_IA32_SYSENTER_EIP:
|
719 | 05330448 | aliguori | env->sysenter_eip = msrs[i].data; |
720 | 05330448 | aliguori | break;
|
721 | 05330448 | aliguori | case MSR_STAR:
|
722 | 05330448 | aliguori | env->star = msrs[i].data; |
723 | 05330448 | aliguori | break;
|
724 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
725 | 05330448 | aliguori | case MSR_CSTAR:
|
726 | 05330448 | aliguori | env->cstar = msrs[i].data; |
727 | 05330448 | aliguori | break;
|
728 | 05330448 | aliguori | case MSR_KERNELGSBASE:
|
729 | 05330448 | aliguori | env->kernelgsbase = msrs[i].data; |
730 | 05330448 | aliguori | break;
|
731 | 05330448 | aliguori | case MSR_FMASK:
|
732 | 05330448 | aliguori | env->fmask = msrs[i].data; |
733 | 05330448 | aliguori | break;
|
734 | 05330448 | aliguori | case MSR_LSTAR:
|
735 | 05330448 | aliguori | env->lstar = msrs[i].data; |
736 | 05330448 | aliguori | break;
|
737 | 05330448 | aliguori | #endif
|
738 | 05330448 | aliguori | case MSR_IA32_TSC:
|
739 | 05330448 | aliguori | env->tsc = msrs[i].data; |
740 | 05330448 | aliguori | break;
|
741 | 1a03675d | Glauber Costa | case MSR_KVM_SYSTEM_TIME:
|
742 | 1a03675d | Glauber Costa | env->system_time_msr = msrs[i].data; |
743 | 1a03675d | Glauber Costa | break;
|
744 | 1a03675d | Glauber Costa | case MSR_KVM_WALL_CLOCK:
|
745 | 1a03675d | Glauber Costa | env->wall_clock_msr = msrs[i].data; |
746 | 1a03675d | Glauber Costa | break;
|
747 | 05330448 | aliguori | } |
748 | 05330448 | aliguori | } |
749 | 05330448 | aliguori | |
750 | 05330448 | aliguori | return 0; |
751 | 05330448 | aliguori | } |
752 | 05330448 | aliguori | |
753 | 9bdbe550 | Hollis Blanchard | static int kvm_put_mp_state(CPUState *env) |
754 | 9bdbe550 | Hollis Blanchard | { |
755 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
|
756 | 9bdbe550 | Hollis Blanchard | |
757 | 9bdbe550 | Hollis Blanchard | return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
|
758 | 9bdbe550 | Hollis Blanchard | } |
759 | 9bdbe550 | Hollis Blanchard | |
760 | 9bdbe550 | Hollis Blanchard | static int kvm_get_mp_state(CPUState *env) |
761 | 9bdbe550 | Hollis Blanchard | { |
762 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state;
|
763 | 9bdbe550 | Hollis Blanchard | int ret;
|
764 | 9bdbe550 | Hollis Blanchard | |
765 | 9bdbe550 | Hollis Blanchard | ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state); |
766 | 9bdbe550 | Hollis Blanchard | if (ret < 0) { |
767 | 9bdbe550 | Hollis Blanchard | return ret;
|
768 | 9bdbe550 | Hollis Blanchard | } |
769 | 9bdbe550 | Hollis Blanchard | env->mp_state = mp_state.mp_state; |
770 | 9bdbe550 | Hollis Blanchard | return 0; |
771 | 9bdbe550 | Hollis Blanchard | } |
772 | 9bdbe550 | Hollis Blanchard | |
773 | ea643051 | Jan Kiszka | static int kvm_put_vcpu_events(CPUState *env, int level) |
774 | a0fb002c | Jan Kiszka | { |
775 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
776 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
777 | a0fb002c | Jan Kiszka | |
778 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
779 | a0fb002c | Jan Kiszka | return 0; |
780 | a0fb002c | Jan Kiszka | } |
781 | a0fb002c | Jan Kiszka | |
782 | 31827373 | Jan Kiszka | events.exception.injected = (env->exception_injected >= 0);
|
783 | 31827373 | Jan Kiszka | events.exception.nr = env->exception_injected; |
784 | a0fb002c | Jan Kiszka | events.exception.has_error_code = env->has_error_code; |
785 | a0fb002c | Jan Kiszka | events.exception.error_code = env->error_code; |
786 | a0fb002c | Jan Kiszka | |
787 | a0fb002c | Jan Kiszka | events.interrupt.injected = (env->interrupt_injected >= 0);
|
788 | a0fb002c | Jan Kiszka | events.interrupt.nr = env->interrupt_injected; |
789 | a0fb002c | Jan Kiszka | events.interrupt.soft = env->soft_interrupt; |
790 | a0fb002c | Jan Kiszka | |
791 | a0fb002c | Jan Kiszka | events.nmi.injected = env->nmi_injected; |
792 | a0fb002c | Jan Kiszka | events.nmi.pending = env->nmi_pending; |
793 | a0fb002c | Jan Kiszka | events.nmi.masked = !!(env->hflags2 & HF2_NMI_MASK); |
794 | a0fb002c | Jan Kiszka | |
795 | a0fb002c | Jan Kiszka | events.sipi_vector = env->sipi_vector; |
796 | a0fb002c | Jan Kiszka | |
797 | ea643051 | Jan Kiszka | events.flags = 0;
|
798 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
799 | ea643051 | Jan Kiszka | events.flags |= |
800 | ea643051 | Jan Kiszka | KVM_VCPUEVENT_VALID_NMI_PENDING | KVM_VCPUEVENT_VALID_SIPI_VECTOR; |
801 | ea643051 | Jan Kiszka | } |
802 | aee028b9 | Jan Kiszka | |
803 | a0fb002c | Jan Kiszka | return kvm_vcpu_ioctl(env, KVM_SET_VCPU_EVENTS, &events);
|
804 | a0fb002c | Jan Kiszka | #else
|
805 | a0fb002c | Jan Kiszka | return 0; |
806 | a0fb002c | Jan Kiszka | #endif
|
807 | a0fb002c | Jan Kiszka | } |
808 | a0fb002c | Jan Kiszka | |
809 | a0fb002c | Jan Kiszka | static int kvm_get_vcpu_events(CPUState *env) |
810 | a0fb002c | Jan Kiszka | { |
811 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
812 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
813 | a0fb002c | Jan Kiszka | int ret;
|
814 | a0fb002c | Jan Kiszka | |
815 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
816 | a0fb002c | Jan Kiszka | return 0; |
817 | a0fb002c | Jan Kiszka | } |
818 | a0fb002c | Jan Kiszka | |
819 | a0fb002c | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_GET_VCPU_EVENTS, &events); |
820 | a0fb002c | Jan Kiszka | if (ret < 0) { |
821 | a0fb002c | Jan Kiszka | return ret;
|
822 | a0fb002c | Jan Kiszka | } |
823 | 31827373 | Jan Kiszka | env->exception_injected = |
824 | a0fb002c | Jan Kiszka | events.exception.injected ? events.exception.nr : -1;
|
825 | a0fb002c | Jan Kiszka | env->has_error_code = events.exception.has_error_code; |
826 | a0fb002c | Jan Kiszka | env->error_code = events.exception.error_code; |
827 | a0fb002c | Jan Kiszka | |
828 | a0fb002c | Jan Kiszka | env->interrupt_injected = |
829 | a0fb002c | Jan Kiszka | events.interrupt.injected ? events.interrupt.nr : -1;
|
830 | a0fb002c | Jan Kiszka | env->soft_interrupt = events.interrupt.soft; |
831 | a0fb002c | Jan Kiszka | |
832 | a0fb002c | Jan Kiszka | env->nmi_injected = events.nmi.injected; |
833 | a0fb002c | Jan Kiszka | env->nmi_pending = events.nmi.pending; |
834 | a0fb002c | Jan Kiszka | if (events.nmi.masked) {
|
835 | a0fb002c | Jan Kiszka | env->hflags2 |= HF2_NMI_MASK; |
836 | a0fb002c | Jan Kiszka | } else {
|
837 | a0fb002c | Jan Kiszka | env->hflags2 &= ~HF2_NMI_MASK; |
838 | a0fb002c | Jan Kiszka | } |
839 | a0fb002c | Jan Kiszka | |
840 | a0fb002c | Jan Kiszka | env->sipi_vector = events.sipi_vector; |
841 | a0fb002c | Jan Kiszka | #endif
|
842 | a0fb002c | Jan Kiszka | |
843 | a0fb002c | Jan Kiszka | return 0; |
844 | a0fb002c | Jan Kiszka | } |
845 | a0fb002c | Jan Kiszka | |
846 | b0b1d690 | Jan Kiszka | static int kvm_guest_debug_workarounds(CPUState *env) |
847 | b0b1d690 | Jan Kiszka | { |
848 | b0b1d690 | Jan Kiszka | int ret = 0; |
849 | b0b1d690 | Jan Kiszka | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
850 | b0b1d690 | Jan Kiszka | unsigned long reinject_trap = 0; |
851 | b0b1d690 | Jan Kiszka | |
852 | b0b1d690 | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
853 | b0b1d690 | Jan Kiszka | if (env->exception_injected == 1) { |
854 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_DB; |
855 | b0b1d690 | Jan Kiszka | } else if (env->exception_injected == 3) { |
856 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_BP; |
857 | b0b1d690 | Jan Kiszka | } |
858 | b0b1d690 | Jan Kiszka | env->exception_injected = -1;
|
859 | b0b1d690 | Jan Kiszka | } |
860 | b0b1d690 | Jan Kiszka | |
861 | b0b1d690 | Jan Kiszka | /*
|
862 | b0b1d690 | Jan Kiszka | * Kernels before KVM_CAP_X86_ROBUST_SINGLESTEP overwrote flags.TF
|
863 | b0b1d690 | Jan Kiszka | * injected via SET_GUEST_DEBUG while updating GP regs. Work around this
|
864 | b0b1d690 | Jan Kiszka | * by updating the debug state once again if single-stepping is on.
|
865 | b0b1d690 | Jan Kiszka | * Another reason to call kvm_update_guest_debug here is a pending debug
|
866 | b0b1d690 | Jan Kiszka | * trap raise by the guest. On kernels without SET_VCPU_EVENTS we have to
|
867 | b0b1d690 | Jan Kiszka | * reinject them via SET_GUEST_DEBUG.
|
868 | b0b1d690 | Jan Kiszka | */
|
869 | b0b1d690 | Jan Kiszka | if (reinject_trap ||
|
870 | b0b1d690 | Jan Kiszka | (!kvm_has_robust_singlestep() && env->singlestep_enabled)) { |
871 | b0b1d690 | Jan Kiszka | ret = kvm_update_guest_debug(env, reinject_trap); |
872 | b0b1d690 | Jan Kiszka | } |
873 | b0b1d690 | Jan Kiszka | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
874 | b0b1d690 | Jan Kiszka | return ret;
|
875 | b0b1d690 | Jan Kiszka | } |
876 | b0b1d690 | Jan Kiszka | |
877 | ea375f9a | Jan Kiszka | int kvm_arch_put_registers(CPUState *env, int level) |
878 | 05330448 | aliguori | { |
879 | 05330448 | aliguori | int ret;
|
880 | 05330448 | aliguori | |
881 | 05330448 | aliguori | ret = kvm_getput_regs(env, 1);
|
882 | 05330448 | aliguori | if (ret < 0) |
883 | 05330448 | aliguori | return ret;
|
884 | 05330448 | aliguori | |
885 | 05330448 | aliguori | ret = kvm_put_fpu(env); |
886 | 05330448 | aliguori | if (ret < 0) |
887 | 05330448 | aliguori | return ret;
|
888 | 05330448 | aliguori | |
889 | 05330448 | aliguori | ret = kvm_put_sregs(env); |
890 | 05330448 | aliguori | if (ret < 0) |
891 | 05330448 | aliguori | return ret;
|
892 | 05330448 | aliguori | |
893 | ea643051 | Jan Kiszka | ret = kvm_put_msrs(env, level); |
894 | 05330448 | aliguori | if (ret < 0) |
895 | 05330448 | aliguori | return ret;
|
896 | 05330448 | aliguori | |
897 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
898 | ea643051 | Jan Kiszka | ret = kvm_put_mp_state(env); |
899 | ea643051 | Jan Kiszka | if (ret < 0) |
900 | ea643051 | Jan Kiszka | return ret;
|
901 | ea643051 | Jan Kiszka | } |
902 | f8d926e9 | Jan Kiszka | |
903 | ea643051 | Jan Kiszka | ret = kvm_put_vcpu_events(env, level); |
904 | a0fb002c | Jan Kiszka | if (ret < 0) |
905 | a0fb002c | Jan Kiszka | return ret;
|
906 | a0fb002c | Jan Kiszka | |
907 | b0b1d690 | Jan Kiszka | /* must be last */
|
908 | b0b1d690 | Jan Kiszka | ret = kvm_guest_debug_workarounds(env); |
909 | b0b1d690 | Jan Kiszka | if (ret < 0) |
910 | b0b1d690 | Jan Kiszka | return ret;
|
911 | b0b1d690 | Jan Kiszka | |
912 | 05330448 | aliguori | return 0; |
913 | 05330448 | aliguori | } |
914 | 05330448 | aliguori | |
915 | 05330448 | aliguori | int kvm_arch_get_registers(CPUState *env)
|
916 | 05330448 | aliguori | { |
917 | 05330448 | aliguori | int ret;
|
918 | 05330448 | aliguori | |
919 | 05330448 | aliguori | ret = kvm_getput_regs(env, 0);
|
920 | 05330448 | aliguori | if (ret < 0) |
921 | 05330448 | aliguori | return ret;
|
922 | 05330448 | aliguori | |
923 | 05330448 | aliguori | ret = kvm_get_fpu(env); |
924 | 05330448 | aliguori | if (ret < 0) |
925 | 05330448 | aliguori | return ret;
|
926 | 05330448 | aliguori | |
927 | 05330448 | aliguori | ret = kvm_get_sregs(env); |
928 | 05330448 | aliguori | if (ret < 0) |
929 | 05330448 | aliguori | return ret;
|
930 | 05330448 | aliguori | |
931 | 05330448 | aliguori | ret = kvm_get_msrs(env); |
932 | 05330448 | aliguori | if (ret < 0) |
933 | 05330448 | aliguori | return ret;
|
934 | 05330448 | aliguori | |
935 | 5a2e3c2e | Jan Kiszka | ret = kvm_get_mp_state(env); |
936 | 5a2e3c2e | Jan Kiszka | if (ret < 0) |
937 | 5a2e3c2e | Jan Kiszka | return ret;
|
938 | 5a2e3c2e | Jan Kiszka | |
939 | a0fb002c | Jan Kiszka | ret = kvm_get_vcpu_events(env); |
940 | a0fb002c | Jan Kiszka | if (ret < 0) |
941 | a0fb002c | Jan Kiszka | return ret;
|
942 | a0fb002c | Jan Kiszka | |
943 | 05330448 | aliguori | return 0; |
944 | 05330448 | aliguori | } |
945 | 05330448 | aliguori | |
946 | 05330448 | aliguori | int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) |
947 | 05330448 | aliguori | { |
948 | 05330448 | aliguori | /* Try to inject an interrupt if the guest can accept it */
|
949 | 05330448 | aliguori | if (run->ready_for_interrupt_injection &&
|
950 | 05330448 | aliguori | (env->interrupt_request & CPU_INTERRUPT_HARD) && |
951 | 05330448 | aliguori | (env->eflags & IF_MASK)) { |
952 | 05330448 | aliguori | int irq;
|
953 | 05330448 | aliguori | |
954 | 05330448 | aliguori | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
955 | 05330448 | aliguori | irq = cpu_get_pic_interrupt(env); |
956 | 05330448 | aliguori | if (irq >= 0) { |
957 | 05330448 | aliguori | struct kvm_interrupt intr;
|
958 | 05330448 | aliguori | intr.irq = irq; |
959 | 05330448 | aliguori | /* FIXME: errors */
|
960 | 05330448 | aliguori | dprintf("injected interrupt %d\n", irq);
|
961 | 05330448 | aliguori | kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
962 | 05330448 | aliguori | } |
963 | 05330448 | aliguori | } |
964 | 05330448 | aliguori | |
965 | 05330448 | aliguori | /* If we have an interrupt but the guest is not ready to receive an
|
966 | 05330448 | aliguori | * interrupt, request an interrupt window exit. This will
|
967 | 05330448 | aliguori | * cause a return to userspace as soon as the guest is ready to
|
968 | 05330448 | aliguori | * receive interrupts. */
|
969 | 05330448 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_HARD))
|
970 | 05330448 | aliguori | run->request_interrupt_window = 1;
|
971 | 05330448 | aliguori | else
|
972 | 05330448 | aliguori | run->request_interrupt_window = 0;
|
973 | 05330448 | aliguori | |
974 | 05330448 | aliguori | dprintf("setting tpr\n");
|
975 | 05330448 | aliguori | run->cr8 = cpu_get_apic_tpr(env); |
976 | 05330448 | aliguori | |
977 | 05330448 | aliguori | return 0; |
978 | 05330448 | aliguori | } |
979 | 05330448 | aliguori | |
980 | 05330448 | aliguori | int kvm_arch_post_run(CPUState *env, struct kvm_run *run) |
981 | 05330448 | aliguori | { |
982 | 05330448 | aliguori | if (run->if_flag)
|
983 | 05330448 | aliguori | env->eflags |= IF_MASK; |
984 | 05330448 | aliguori | else
|
985 | 05330448 | aliguori | env->eflags &= ~IF_MASK; |
986 | 05330448 | aliguori | |
987 | 05330448 | aliguori | cpu_set_apic_tpr(env, run->cr8); |
988 | 05330448 | aliguori | cpu_set_apic_base(env, run->apic_base); |
989 | 05330448 | aliguori | |
990 | 05330448 | aliguori | return 0; |
991 | 05330448 | aliguori | } |
992 | 05330448 | aliguori | |
993 | 05330448 | aliguori | static int kvm_handle_halt(CPUState *env) |
994 | 05330448 | aliguori | { |
995 | 05330448 | aliguori | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
996 | 05330448 | aliguori | (env->eflags & IF_MASK)) && |
997 | 05330448 | aliguori | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { |
998 | 05330448 | aliguori | env->halted = 1;
|
999 | 05330448 | aliguori | env->exception_index = EXCP_HLT; |
1000 | 05330448 | aliguori | return 0; |
1001 | 05330448 | aliguori | } |
1002 | 05330448 | aliguori | |
1003 | 05330448 | aliguori | return 1; |
1004 | 05330448 | aliguori | } |
1005 | 05330448 | aliguori | |
1006 | 05330448 | aliguori | int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) |
1007 | 05330448 | aliguori | { |
1008 | 05330448 | aliguori | int ret = 0; |
1009 | 05330448 | aliguori | |
1010 | 05330448 | aliguori | switch (run->exit_reason) {
|
1011 | 05330448 | aliguori | case KVM_EXIT_HLT:
|
1012 | 05330448 | aliguori | dprintf("handle_hlt\n");
|
1013 | 05330448 | aliguori | ret = kvm_handle_halt(env); |
1014 | 05330448 | aliguori | break;
|
1015 | 05330448 | aliguori | } |
1016 | 05330448 | aliguori | |
1017 | 05330448 | aliguori | return ret;
|
1018 | 05330448 | aliguori | } |
1019 | e22a25c9 | aliguori | |
1020 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1021 | e22a25c9 | aliguori | int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1022 | e22a25c9 | aliguori | { |
1023 | 38972938 | Juan Quintela | static const uint8_t int3 = 0xcc; |
1024 | 64bf3f4e | aliguori | |
1025 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) || |
1026 | 64bf3f4e | aliguori | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1)) |
1027 | e22a25c9 | aliguori | return -EINVAL;
|
1028 | e22a25c9 | aliguori | return 0; |
1029 | e22a25c9 | aliguori | } |
1030 | e22a25c9 | aliguori | |
1031 | e22a25c9 | aliguori | int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1032 | e22a25c9 | aliguori | { |
1033 | e22a25c9 | aliguori | uint8_t int3; |
1034 | e22a25c9 | aliguori | |
1035 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc || |
1036 | 64bf3f4e | aliguori | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) |
1037 | e22a25c9 | aliguori | return -EINVAL;
|
1038 | e22a25c9 | aliguori | return 0; |
1039 | e22a25c9 | aliguori | } |
1040 | e22a25c9 | aliguori | |
1041 | e22a25c9 | aliguori | static struct { |
1042 | e22a25c9 | aliguori | target_ulong addr; |
1043 | e22a25c9 | aliguori | int len;
|
1044 | e22a25c9 | aliguori | int type;
|
1045 | e22a25c9 | aliguori | } hw_breakpoint[4];
|
1046 | e22a25c9 | aliguori | |
1047 | e22a25c9 | aliguori | static int nb_hw_breakpoint; |
1048 | e22a25c9 | aliguori | |
1049 | e22a25c9 | aliguori | static int find_hw_breakpoint(target_ulong addr, int len, int type) |
1050 | e22a25c9 | aliguori | { |
1051 | e22a25c9 | aliguori | int n;
|
1052 | e22a25c9 | aliguori | |
1053 | e22a25c9 | aliguori | for (n = 0; n < nb_hw_breakpoint; n++) |
1054 | e22a25c9 | aliguori | if (hw_breakpoint[n].addr == addr && hw_breakpoint[n].type == type &&
|
1055 | e22a25c9 | aliguori | (hw_breakpoint[n].len == len || len == -1))
|
1056 | e22a25c9 | aliguori | return n;
|
1057 | e22a25c9 | aliguori | return -1; |
1058 | e22a25c9 | aliguori | } |
1059 | e22a25c9 | aliguori | |
1060 | e22a25c9 | aliguori | int kvm_arch_insert_hw_breakpoint(target_ulong addr,
|
1061 | e22a25c9 | aliguori | target_ulong len, int type)
|
1062 | e22a25c9 | aliguori | { |
1063 | e22a25c9 | aliguori | switch (type) {
|
1064 | e22a25c9 | aliguori | case GDB_BREAKPOINT_HW:
|
1065 | e22a25c9 | aliguori | len = 1;
|
1066 | e22a25c9 | aliguori | break;
|
1067 | e22a25c9 | aliguori | case GDB_WATCHPOINT_WRITE:
|
1068 | e22a25c9 | aliguori | case GDB_WATCHPOINT_ACCESS:
|
1069 | e22a25c9 | aliguori | switch (len) {
|
1070 | e22a25c9 | aliguori | case 1: |
1071 | e22a25c9 | aliguori | break;
|
1072 | e22a25c9 | aliguori | case 2: |
1073 | e22a25c9 | aliguori | case 4: |
1074 | e22a25c9 | aliguori | case 8: |
1075 | e22a25c9 | aliguori | if (addr & (len - 1)) |
1076 | e22a25c9 | aliguori | return -EINVAL;
|
1077 | e22a25c9 | aliguori | break;
|
1078 | e22a25c9 | aliguori | default:
|
1079 | e22a25c9 | aliguori | return -EINVAL;
|
1080 | e22a25c9 | aliguori | } |
1081 | e22a25c9 | aliguori | break;
|
1082 | e22a25c9 | aliguori | default:
|
1083 | e22a25c9 | aliguori | return -ENOSYS;
|
1084 | e22a25c9 | aliguori | } |
1085 | e22a25c9 | aliguori | |
1086 | e22a25c9 | aliguori | if (nb_hw_breakpoint == 4) |
1087 | e22a25c9 | aliguori | return -ENOBUFS;
|
1088 | e22a25c9 | aliguori | |
1089 | e22a25c9 | aliguori | if (find_hw_breakpoint(addr, len, type) >= 0) |
1090 | e22a25c9 | aliguori | return -EEXIST;
|
1091 | e22a25c9 | aliguori | |
1092 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].addr = addr; |
1093 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].len = len; |
1094 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].type = type; |
1095 | e22a25c9 | aliguori | nb_hw_breakpoint++; |
1096 | e22a25c9 | aliguori | |
1097 | e22a25c9 | aliguori | return 0; |
1098 | e22a25c9 | aliguori | } |
1099 | e22a25c9 | aliguori | |
1100 | e22a25c9 | aliguori | int kvm_arch_remove_hw_breakpoint(target_ulong addr,
|
1101 | e22a25c9 | aliguori | target_ulong len, int type)
|
1102 | e22a25c9 | aliguori | { |
1103 | e22a25c9 | aliguori | int n;
|
1104 | e22a25c9 | aliguori | |
1105 | e22a25c9 | aliguori | n = find_hw_breakpoint(addr, (type == GDB_BREAKPOINT_HW) ? 1 : len, type);
|
1106 | e22a25c9 | aliguori | if (n < 0) |
1107 | e22a25c9 | aliguori | return -ENOENT;
|
1108 | e22a25c9 | aliguori | |
1109 | e22a25c9 | aliguori | nb_hw_breakpoint--; |
1110 | e22a25c9 | aliguori | hw_breakpoint[n] = hw_breakpoint[nb_hw_breakpoint]; |
1111 | e22a25c9 | aliguori | |
1112 | e22a25c9 | aliguori | return 0; |
1113 | e22a25c9 | aliguori | } |
1114 | e22a25c9 | aliguori | |
1115 | e22a25c9 | aliguori | void kvm_arch_remove_all_hw_breakpoints(void) |
1116 | e22a25c9 | aliguori | { |
1117 | e22a25c9 | aliguori | nb_hw_breakpoint = 0;
|
1118 | e22a25c9 | aliguori | } |
1119 | e22a25c9 | aliguori | |
1120 | e22a25c9 | aliguori | static CPUWatchpoint hw_watchpoint;
|
1121 | e22a25c9 | aliguori | |
1122 | e22a25c9 | aliguori | int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) |
1123 | e22a25c9 | aliguori | { |
1124 | e22a25c9 | aliguori | int handle = 0; |
1125 | e22a25c9 | aliguori | int n;
|
1126 | e22a25c9 | aliguori | |
1127 | e22a25c9 | aliguori | if (arch_info->exception == 1) { |
1128 | e22a25c9 | aliguori | if (arch_info->dr6 & (1 << 14)) { |
1129 | e22a25c9 | aliguori | if (cpu_single_env->singlestep_enabled)
|
1130 | e22a25c9 | aliguori | handle = 1;
|
1131 | e22a25c9 | aliguori | } else {
|
1132 | e22a25c9 | aliguori | for (n = 0; n < 4; n++) |
1133 | e22a25c9 | aliguori | if (arch_info->dr6 & (1 << n)) |
1134 | e22a25c9 | aliguori | switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { |
1135 | e22a25c9 | aliguori | case 0x0: |
1136 | e22a25c9 | aliguori | handle = 1;
|
1137 | e22a25c9 | aliguori | break;
|
1138 | e22a25c9 | aliguori | case 0x1: |
1139 | e22a25c9 | aliguori | handle = 1;
|
1140 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1141 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1142 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_WRITE; |
1143 | e22a25c9 | aliguori | break;
|
1144 | e22a25c9 | aliguori | case 0x3: |
1145 | e22a25c9 | aliguori | handle = 1;
|
1146 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1147 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1148 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_ACCESS; |
1149 | e22a25c9 | aliguori | break;
|
1150 | e22a25c9 | aliguori | } |
1151 | e22a25c9 | aliguori | } |
1152 | e22a25c9 | aliguori | } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) |
1153 | e22a25c9 | aliguori | handle = 1;
|
1154 | e22a25c9 | aliguori | |
1155 | b0b1d690 | Jan Kiszka | if (!handle) {
|
1156 | b0b1d690 | Jan Kiszka | cpu_synchronize_state(cpu_single_env); |
1157 | b0b1d690 | Jan Kiszka | assert(cpu_single_env->exception_injected == -1);
|
1158 | b0b1d690 | Jan Kiszka | |
1159 | b0b1d690 | Jan Kiszka | cpu_single_env->exception_injected = arch_info->exception; |
1160 | b0b1d690 | Jan Kiszka | cpu_single_env->has_error_code = 0;
|
1161 | b0b1d690 | Jan Kiszka | } |
1162 | e22a25c9 | aliguori | |
1163 | e22a25c9 | aliguori | return handle;
|
1164 | e22a25c9 | aliguori | } |
1165 | e22a25c9 | aliguori | |
1166 | e22a25c9 | aliguori | void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg) |
1167 | e22a25c9 | aliguori | { |
1168 | e22a25c9 | aliguori | const uint8_t type_code[] = {
|
1169 | e22a25c9 | aliguori | [GDB_BREAKPOINT_HW] = 0x0,
|
1170 | e22a25c9 | aliguori | [GDB_WATCHPOINT_WRITE] = 0x1,
|
1171 | e22a25c9 | aliguori | [GDB_WATCHPOINT_ACCESS] = 0x3
|
1172 | e22a25c9 | aliguori | }; |
1173 | e22a25c9 | aliguori | const uint8_t len_code[] = {
|
1174 | e22a25c9 | aliguori | [1] = 0x0, [2] = 0x1, [4] = 0x3, [8] = 0x2 |
1175 | e22a25c9 | aliguori | }; |
1176 | e22a25c9 | aliguori | int n;
|
1177 | e22a25c9 | aliguori | |
1178 | e22a25c9 | aliguori | if (kvm_sw_breakpoints_active(env))
|
1179 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; |
1180 | e22a25c9 | aliguori | |
1181 | e22a25c9 | aliguori | if (nb_hw_breakpoint > 0) { |
1182 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; |
1183 | e22a25c9 | aliguori | dbg->arch.debugreg[7] = 0x0600; |
1184 | e22a25c9 | aliguori | for (n = 0; n < nb_hw_breakpoint; n++) { |
1185 | e22a25c9 | aliguori | dbg->arch.debugreg[n] = hw_breakpoint[n].addr; |
1186 | e22a25c9 | aliguori | dbg->arch.debugreg[7] |= (2 << (n * 2)) | |
1187 | e22a25c9 | aliguori | (type_code[hw_breakpoint[n].type] << (16 + n*4)) | |
1188 | e22a25c9 | aliguori | (len_code[hw_breakpoint[n].len] << (18 + n*4)); |
1189 | e22a25c9 | aliguori | } |
1190 | e22a25c9 | aliguori | } |
1191 | e22a25c9 | aliguori | } |
1192 | e22a25c9 | aliguori | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |