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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 | 8c0d577e | Blue Swirl | #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 | 8c0d577e | Blue Swirl | #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 | 20420430 | Sheng Yang | static int kvm_init_identity_map_page(KVMState *s) |
330 | 20420430 | Sheng Yang | { |
331 | 20420430 | Sheng Yang | #ifdef KVM_CAP_SET_IDENTITY_MAP_ADDR
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332 | 20420430 | Sheng Yang | int ret;
|
333 | 20420430 | Sheng Yang | uint64_t addr = 0xfffbc000;
|
334 | 20420430 | Sheng Yang | |
335 | 20420430 | Sheng Yang | if (!kvm_check_extension(s, KVM_CAP_SET_IDENTITY_MAP_ADDR)) {
|
336 | 20420430 | Sheng Yang | return 0; |
337 | 20420430 | Sheng Yang | } |
338 | 20420430 | Sheng Yang | |
339 | 20420430 | Sheng Yang | ret = kvm_vm_ioctl(s, KVM_SET_IDENTITY_MAP_ADDR, &addr); |
340 | 20420430 | Sheng Yang | if (ret < 0) { |
341 | 20420430 | Sheng Yang | fprintf(stderr, "kvm_set_identity_map_addr: %s\n", strerror(ret));
|
342 | 20420430 | Sheng Yang | return ret;
|
343 | 20420430 | Sheng Yang | } |
344 | 20420430 | Sheng Yang | #endif
|
345 | 20420430 | Sheng Yang | return 0; |
346 | 20420430 | Sheng Yang | } |
347 | 20420430 | Sheng Yang | |
348 | 05330448 | aliguori | int kvm_arch_init(KVMState *s, int smp_cpus) |
349 | 05330448 | aliguori | { |
350 | 05330448 | aliguori | int ret;
|
351 | 05330448 | aliguori | |
352 | 05330448 | aliguori | /* create vm86 tss. KVM uses vm86 mode to emulate 16-bit code
|
353 | 05330448 | aliguori | * directly. In order to use vm86 mode, a TSS is needed. Since this
|
354 | 05330448 | aliguori | * must be part of guest physical memory, we need to allocate it. Older
|
355 | 05330448 | aliguori | * versions of KVM just assumed that it would be at the end of physical
|
356 | 05330448 | aliguori | * memory but that doesn't work with more than 4GB of memory. We simply
|
357 | 05330448 | aliguori | * refuse to work with those older versions of KVM. */
|
358 | 984b5181 | aliguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_SET_TSS_ADDR); |
359 | 05330448 | aliguori | if (ret <= 0) { |
360 | 05330448 | aliguori | fprintf(stderr, "kvm does not support KVM_CAP_SET_TSS_ADDR\n");
|
361 | 05330448 | aliguori | return ret;
|
362 | 05330448 | aliguori | } |
363 | 05330448 | aliguori | |
364 | 05330448 | aliguori | /* this address is 3 pages before the bios, and the bios should present
|
365 | 05330448 | aliguori | * as unavaible memory. FIXME, need to ensure the e820 map deals with
|
366 | 05330448 | aliguori | * this?
|
367 | 05330448 | aliguori | */
|
368 | 4c5b10b7 | Jes Sorensen | /*
|
369 | 4c5b10b7 | Jes Sorensen | * Tell fw_cfg to notify the BIOS to reserve the range.
|
370 | 4c5b10b7 | Jes Sorensen | */
|
371 | 4c5b10b7 | Jes Sorensen | if (e820_add_entry(0xfffbc000, 0x4000, E820_RESERVED) < 0) { |
372 | 4c5b10b7 | Jes Sorensen | perror("e820_add_entry() table is full");
|
373 | 4c5b10b7 | Jes Sorensen | exit(1);
|
374 | 4c5b10b7 | Jes Sorensen | } |
375 | 20420430 | Sheng Yang | ret = kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000);
|
376 | 20420430 | Sheng Yang | if (ret < 0) { |
377 | 20420430 | Sheng Yang | return ret;
|
378 | 20420430 | Sheng Yang | } |
379 | 20420430 | Sheng Yang | |
380 | 20420430 | Sheng Yang | return kvm_init_identity_map_page(s);
|
381 | 05330448 | aliguori | } |
382 | 05330448 | aliguori | |
383 | 05330448 | aliguori | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
384 | 05330448 | aliguori | { |
385 | 05330448 | aliguori | lhs->selector = rhs->selector; |
386 | 05330448 | aliguori | lhs->base = rhs->base; |
387 | 05330448 | aliguori | lhs->limit = rhs->limit; |
388 | 05330448 | aliguori | lhs->type = 3;
|
389 | 05330448 | aliguori | lhs->present = 1;
|
390 | 05330448 | aliguori | lhs->dpl = 3;
|
391 | 05330448 | aliguori | lhs->db = 0;
|
392 | 05330448 | aliguori | lhs->s = 1;
|
393 | 05330448 | aliguori | lhs->l = 0;
|
394 | 05330448 | aliguori | lhs->g = 0;
|
395 | 05330448 | aliguori | lhs->avl = 0;
|
396 | 05330448 | aliguori | lhs->unusable = 0;
|
397 | 05330448 | aliguori | } |
398 | 05330448 | aliguori | |
399 | 05330448 | aliguori | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
400 | 05330448 | aliguori | { |
401 | 05330448 | aliguori | unsigned flags = rhs->flags;
|
402 | 05330448 | aliguori | lhs->selector = rhs->selector; |
403 | 05330448 | aliguori | lhs->base = rhs->base; |
404 | 05330448 | aliguori | lhs->limit = rhs->limit; |
405 | 05330448 | aliguori | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
|
406 | 05330448 | aliguori | lhs->present = (flags & DESC_P_MASK) != 0;
|
407 | 05330448 | aliguori | lhs->dpl = rhs->selector & 3;
|
408 | 05330448 | aliguori | lhs->db = (flags >> DESC_B_SHIFT) & 1;
|
409 | 05330448 | aliguori | lhs->s = (flags & DESC_S_MASK) != 0;
|
410 | 05330448 | aliguori | lhs->l = (flags >> DESC_L_SHIFT) & 1;
|
411 | 05330448 | aliguori | lhs->g = (flags & DESC_G_MASK) != 0;
|
412 | 05330448 | aliguori | lhs->avl = (flags & DESC_AVL_MASK) != 0;
|
413 | 05330448 | aliguori | lhs->unusable = 0;
|
414 | 05330448 | aliguori | } |
415 | 05330448 | aliguori | |
416 | 05330448 | aliguori | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) |
417 | 05330448 | aliguori | { |
418 | 05330448 | aliguori | lhs->selector = rhs->selector; |
419 | 05330448 | aliguori | lhs->base = rhs->base; |
420 | 05330448 | aliguori | lhs->limit = rhs->limit; |
421 | 05330448 | aliguori | lhs->flags = |
422 | 05330448 | aliguori | (rhs->type << DESC_TYPE_SHIFT) |
423 | 05330448 | aliguori | | (rhs->present * DESC_P_MASK) |
424 | 05330448 | aliguori | | (rhs->dpl << DESC_DPL_SHIFT) |
425 | 05330448 | aliguori | | (rhs->db << DESC_B_SHIFT) |
426 | 05330448 | aliguori | | (rhs->s * DESC_S_MASK) |
427 | 05330448 | aliguori | | (rhs->l << DESC_L_SHIFT) |
428 | 05330448 | aliguori | | (rhs->g * DESC_G_MASK) |
429 | 05330448 | aliguori | | (rhs->avl * DESC_AVL_MASK); |
430 | 05330448 | aliguori | } |
431 | 05330448 | aliguori | |
432 | 05330448 | aliguori | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) |
433 | 05330448 | aliguori | { |
434 | 05330448 | aliguori | if (set)
|
435 | 05330448 | aliguori | *kvm_reg = *qemu_reg; |
436 | 05330448 | aliguori | else
|
437 | 05330448 | aliguori | *qemu_reg = *kvm_reg; |
438 | 05330448 | aliguori | } |
439 | 05330448 | aliguori | |
440 | 05330448 | aliguori | static int kvm_getput_regs(CPUState *env, int set) |
441 | 05330448 | aliguori | { |
442 | 05330448 | aliguori | struct kvm_regs regs;
|
443 | 05330448 | aliguori | int ret = 0; |
444 | 05330448 | aliguori | |
445 | 05330448 | aliguori | if (!set) {
|
446 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
447 | 05330448 | aliguori | if (ret < 0) |
448 | 05330448 | aliguori | return ret;
|
449 | 05330448 | aliguori | } |
450 | 05330448 | aliguori | |
451 | 05330448 | aliguori | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); |
452 | 05330448 | aliguori | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); |
453 | 05330448 | aliguori | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); |
454 | 05330448 | aliguori | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); |
455 | 05330448 | aliguori | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); |
456 | 05330448 | aliguori | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); |
457 | 05330448 | aliguori | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); |
458 | 05330448 | aliguori | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); |
459 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
460 | 05330448 | aliguori | kvm_getput_reg(®s.r8, &env->regs[8], set);
|
461 | 05330448 | aliguori | kvm_getput_reg(®s.r9, &env->regs[9], set);
|
462 | 05330448 | aliguori | kvm_getput_reg(®s.r10, &env->regs[10], set);
|
463 | 05330448 | aliguori | kvm_getput_reg(®s.r11, &env->regs[11], set);
|
464 | 05330448 | aliguori | kvm_getput_reg(®s.r12, &env->regs[12], set);
|
465 | 05330448 | aliguori | kvm_getput_reg(®s.r13, &env->regs[13], set);
|
466 | 05330448 | aliguori | kvm_getput_reg(®s.r14, &env->regs[14], set);
|
467 | 05330448 | aliguori | kvm_getput_reg(®s.r15, &env->regs[15], set);
|
468 | 05330448 | aliguori | #endif
|
469 | 05330448 | aliguori | |
470 | 05330448 | aliguori | kvm_getput_reg(®s.rflags, &env->eflags, set); |
471 | 05330448 | aliguori | kvm_getput_reg(®s.rip, &env->eip, set); |
472 | 05330448 | aliguori | |
473 | 05330448 | aliguori | if (set)
|
474 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
475 | 05330448 | aliguori | |
476 | 05330448 | aliguori | return ret;
|
477 | 05330448 | aliguori | } |
478 | 05330448 | aliguori | |
479 | 05330448 | aliguori | static int kvm_put_fpu(CPUState *env) |
480 | 05330448 | aliguori | { |
481 | 05330448 | aliguori | struct kvm_fpu fpu;
|
482 | 05330448 | aliguori | int i;
|
483 | 05330448 | aliguori | |
484 | 05330448 | aliguori | memset(&fpu, 0, sizeof fpu); |
485 | 05330448 | aliguori | fpu.fsw = env->fpus & ~(7 << 11); |
486 | 05330448 | aliguori | fpu.fsw |= (env->fpstt & 7) << 11; |
487 | 05330448 | aliguori | fpu.fcw = env->fpuc; |
488 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
489 | 05330448 | aliguori | fpu.ftwx |= (!env->fptags[i]) << i; |
490 | 05330448 | aliguori | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs);
|
491 | 05330448 | aliguori | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs);
|
492 | 05330448 | aliguori | fpu.mxcsr = env->mxcsr; |
493 | 05330448 | aliguori | |
494 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
|
495 | 05330448 | aliguori | } |
496 | 05330448 | aliguori | |
497 | 05330448 | aliguori | static int kvm_put_sregs(CPUState *env) |
498 | 05330448 | aliguori | { |
499 | 05330448 | aliguori | struct kvm_sregs sregs;
|
500 | 05330448 | aliguori | |
501 | 0e607a80 | Jan Kiszka | memset(sregs.interrupt_bitmap, 0, sizeof(sregs.interrupt_bitmap)); |
502 | 0e607a80 | Jan Kiszka | if (env->interrupt_injected >= 0) { |
503 | 0e607a80 | Jan Kiszka | sregs.interrupt_bitmap[env->interrupt_injected / 64] |=
|
504 | 0e607a80 | Jan Kiszka | (uint64_t)1 << (env->interrupt_injected % 64); |
505 | 0e607a80 | Jan Kiszka | } |
506 | 05330448 | aliguori | |
507 | 05330448 | aliguori | if ((env->eflags & VM_MASK)) {
|
508 | 05330448 | aliguori | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
509 | 05330448 | aliguori | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); |
510 | 05330448 | aliguori | set_v8086_seg(&sregs.es, &env->segs[R_ES]); |
511 | 05330448 | aliguori | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); |
512 | 05330448 | aliguori | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); |
513 | 05330448 | aliguori | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); |
514 | 05330448 | aliguori | } else {
|
515 | 05330448 | aliguori | set_seg(&sregs.cs, &env->segs[R_CS]); |
516 | 05330448 | aliguori | set_seg(&sregs.ds, &env->segs[R_DS]); |
517 | 05330448 | aliguori | set_seg(&sregs.es, &env->segs[R_ES]); |
518 | 05330448 | aliguori | set_seg(&sregs.fs, &env->segs[R_FS]); |
519 | 05330448 | aliguori | set_seg(&sregs.gs, &env->segs[R_GS]); |
520 | 05330448 | aliguori | set_seg(&sregs.ss, &env->segs[R_SS]); |
521 | 05330448 | aliguori | |
522 | 05330448 | aliguori | if (env->cr[0] & CR0_PE_MASK) { |
523 | 05330448 | aliguori | /* force ss cpl to cs cpl */
|
524 | 05330448 | aliguori | sregs.ss.selector = (sregs.ss.selector & ~3) |
|
525 | 05330448 | aliguori | (sregs.cs.selector & 3);
|
526 | 05330448 | aliguori | sregs.ss.dpl = sregs.ss.selector & 3;
|
527 | 05330448 | aliguori | } |
528 | 05330448 | aliguori | } |
529 | 05330448 | aliguori | |
530 | 05330448 | aliguori | set_seg(&sregs.tr, &env->tr); |
531 | 05330448 | aliguori | set_seg(&sregs.ldt, &env->ldt); |
532 | 05330448 | aliguori | |
533 | 05330448 | aliguori | sregs.idt.limit = env->idt.limit; |
534 | 05330448 | aliguori | sregs.idt.base = env->idt.base; |
535 | 05330448 | aliguori | sregs.gdt.limit = env->gdt.limit; |
536 | 05330448 | aliguori | sregs.gdt.base = env->gdt.base; |
537 | 05330448 | aliguori | |
538 | 05330448 | aliguori | sregs.cr0 = env->cr[0];
|
539 | 05330448 | aliguori | sregs.cr2 = env->cr[2];
|
540 | 05330448 | aliguori | sregs.cr3 = env->cr[3];
|
541 | 05330448 | aliguori | sregs.cr4 = env->cr[4];
|
542 | 05330448 | aliguori | |
543 | 05330448 | aliguori | sregs.cr8 = cpu_get_apic_tpr(env); |
544 | 05330448 | aliguori | sregs.apic_base = cpu_get_apic_base(env); |
545 | 05330448 | aliguori | |
546 | 05330448 | aliguori | sregs.efer = env->efer; |
547 | 05330448 | aliguori | |
548 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
|
549 | 05330448 | aliguori | } |
550 | 05330448 | aliguori | |
551 | 05330448 | aliguori | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, |
552 | 05330448 | aliguori | uint32_t index, uint64_t value) |
553 | 05330448 | aliguori | { |
554 | 05330448 | aliguori | entry->index = index; |
555 | 05330448 | aliguori | entry->data = value; |
556 | 05330448 | aliguori | } |
557 | 05330448 | aliguori | |
558 | ea643051 | Jan Kiszka | static int kvm_put_msrs(CPUState *env, int level) |
559 | 05330448 | aliguori | { |
560 | 05330448 | aliguori | struct {
|
561 | 05330448 | aliguori | struct kvm_msrs info;
|
562 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
563 | 05330448 | aliguori | } msr_data; |
564 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
565 | 05330448 | aliguori | int n = 0; |
566 | 05330448 | aliguori | |
567 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); |
568 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); |
569 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); |
570 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
571 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
572 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
573 | 05330448 | aliguori | /* FIXME if lm capable */
|
574 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); |
575 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); |
576 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); |
577 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); |
578 | 05330448 | aliguori | #endif
|
579 | ea643051 | Jan Kiszka | if (level == KVM_PUT_FULL_STATE) {
|
580 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); |
581 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_SYSTEM_TIME, |
582 | ea643051 | Jan Kiszka | env->system_time_msr); |
583 | ea643051 | Jan Kiszka | kvm_msr_entry_set(&msrs[n++], MSR_KVM_WALL_CLOCK, env->wall_clock_msr); |
584 | ea643051 | Jan Kiszka | } |
585 | 1a03675d | Glauber Costa | |
586 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
587 | 05330448 | aliguori | |
588 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data);
|
589 | 05330448 | aliguori | |
590 | 05330448 | aliguori | } |
591 | 05330448 | aliguori | |
592 | 05330448 | aliguori | |
593 | 05330448 | aliguori | static int kvm_get_fpu(CPUState *env) |
594 | 05330448 | aliguori | { |
595 | 05330448 | aliguori | struct kvm_fpu fpu;
|
596 | 05330448 | aliguori | int i, ret;
|
597 | 05330448 | aliguori | |
598 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); |
599 | 05330448 | aliguori | if (ret < 0) |
600 | 05330448 | aliguori | return ret;
|
601 | 05330448 | aliguori | |
602 | 05330448 | aliguori | env->fpstt = (fpu.fsw >> 11) & 7; |
603 | 05330448 | aliguori | env->fpus = fpu.fsw; |
604 | 05330448 | aliguori | env->fpuc = fpu.fcw; |
605 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
606 | 05330448 | aliguori | env->fptags[i] = !((fpu.ftwx >> i) & 1);
|
607 | 05330448 | aliguori | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs);
|
608 | 05330448 | aliguori | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs);
|
609 | 05330448 | aliguori | env->mxcsr = fpu.mxcsr; |
610 | 05330448 | aliguori | |
611 | 05330448 | aliguori | return 0; |
612 | 05330448 | aliguori | } |
613 | 05330448 | aliguori | |
614 | 05330448 | aliguori | static int kvm_get_sregs(CPUState *env) |
615 | 05330448 | aliguori | { |
616 | 05330448 | aliguori | struct kvm_sregs sregs;
|
617 | 05330448 | aliguori | uint32_t hflags; |
618 | 0e607a80 | Jan Kiszka | int bit, i, ret;
|
619 | 05330448 | aliguori | |
620 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
621 | 05330448 | aliguori | if (ret < 0) |
622 | 05330448 | aliguori | return ret;
|
623 | 05330448 | aliguori | |
624 | 0e607a80 | Jan Kiszka | /* There can only be one pending IRQ set in the bitmap at a time, so try
|
625 | 0e607a80 | Jan Kiszka | to find it and save its number instead (-1 for none). */
|
626 | 0e607a80 | Jan Kiszka | env->interrupt_injected = -1;
|
627 | 0e607a80 | Jan Kiszka | for (i = 0; i < ARRAY_SIZE(sregs.interrupt_bitmap); i++) { |
628 | 0e607a80 | Jan Kiszka | if (sregs.interrupt_bitmap[i]) {
|
629 | 0e607a80 | Jan Kiszka | bit = ctz64(sregs.interrupt_bitmap[i]); |
630 | 0e607a80 | Jan Kiszka | env->interrupt_injected = i * 64 + bit;
|
631 | 0e607a80 | Jan Kiszka | break;
|
632 | 0e607a80 | Jan Kiszka | } |
633 | 0e607a80 | Jan Kiszka | } |
634 | 05330448 | aliguori | |
635 | 05330448 | aliguori | get_seg(&env->segs[R_CS], &sregs.cs); |
636 | 05330448 | aliguori | get_seg(&env->segs[R_DS], &sregs.ds); |
637 | 05330448 | aliguori | get_seg(&env->segs[R_ES], &sregs.es); |
638 | 05330448 | aliguori | get_seg(&env->segs[R_FS], &sregs.fs); |
639 | 05330448 | aliguori | get_seg(&env->segs[R_GS], &sregs.gs); |
640 | 05330448 | aliguori | get_seg(&env->segs[R_SS], &sregs.ss); |
641 | 05330448 | aliguori | |
642 | 05330448 | aliguori | get_seg(&env->tr, &sregs.tr); |
643 | 05330448 | aliguori | get_seg(&env->ldt, &sregs.ldt); |
644 | 05330448 | aliguori | |
645 | 05330448 | aliguori | env->idt.limit = sregs.idt.limit; |
646 | 05330448 | aliguori | env->idt.base = sregs.idt.base; |
647 | 05330448 | aliguori | env->gdt.limit = sregs.gdt.limit; |
648 | 05330448 | aliguori | env->gdt.base = sregs.gdt.base; |
649 | 05330448 | aliguori | |
650 | 05330448 | aliguori | env->cr[0] = sregs.cr0;
|
651 | 05330448 | aliguori | env->cr[2] = sregs.cr2;
|
652 | 05330448 | aliguori | env->cr[3] = sregs.cr3;
|
653 | 05330448 | aliguori | env->cr[4] = sregs.cr4;
|
654 | 05330448 | aliguori | |
655 | 05330448 | aliguori | cpu_set_apic_base(env, sregs.apic_base); |
656 | 05330448 | aliguori | |
657 | 05330448 | aliguori | env->efer = sregs.efer; |
658 | 05330448 | aliguori | //cpu_set_apic_tpr(env, sregs.cr8);
|
659 | 05330448 | aliguori | |
660 | 05330448 | aliguori | #define HFLAG_COPY_MASK ~( \
|
661 | 05330448 | aliguori | HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ |
662 | 05330448 | aliguori | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ |
663 | 05330448 | aliguori | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ |
664 | 05330448 | aliguori | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) |
665 | 05330448 | aliguori | |
666 | 05330448 | aliguori | |
667 | 05330448 | aliguori | |
668 | 05330448 | aliguori | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; |
669 | 05330448 | aliguori | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT);
|
670 | 05330448 | aliguori | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) &
|
671 | 05330448 | aliguori | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
672 | 05330448 | aliguori | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
673 | 05330448 | aliguori | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) <<
|
674 | 05330448 | aliguori | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
675 | 05330448 | aliguori | |
676 | 05330448 | aliguori | if (env->efer & MSR_EFER_LMA) {
|
677 | 05330448 | aliguori | hflags |= HF_LMA_MASK; |
678 | 05330448 | aliguori | } |
679 | 05330448 | aliguori | |
680 | 05330448 | aliguori | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) {
|
681 | 05330448 | aliguori | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
682 | 05330448 | aliguori | } else {
|
683 | 05330448 | aliguori | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> |
684 | 05330448 | aliguori | (DESC_B_SHIFT - HF_CS32_SHIFT); |
685 | 05330448 | aliguori | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
686 | 05330448 | aliguori | (DESC_B_SHIFT - HF_SS32_SHIFT); |
687 | 05330448 | aliguori | if (!(env->cr[0] & CR0_PE_MASK) || |
688 | 05330448 | aliguori | (env->eflags & VM_MASK) || |
689 | 05330448 | aliguori | !(hflags & HF_CS32_MASK)) { |
690 | 05330448 | aliguori | hflags |= HF_ADDSEG_MASK; |
691 | 05330448 | aliguori | } else {
|
692 | 05330448 | aliguori | hflags |= ((env->segs[R_DS].base | |
693 | 05330448 | aliguori | env->segs[R_ES].base | |
694 | 05330448 | aliguori | env->segs[R_SS].base) != 0) <<
|
695 | 05330448 | aliguori | HF_ADDSEG_SHIFT; |
696 | 05330448 | aliguori | } |
697 | 05330448 | aliguori | } |
698 | 05330448 | aliguori | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; |
699 | 05330448 | aliguori | |
700 | 05330448 | aliguori | return 0; |
701 | 05330448 | aliguori | } |
702 | 05330448 | aliguori | |
703 | 05330448 | aliguori | static int kvm_get_msrs(CPUState *env) |
704 | 05330448 | aliguori | { |
705 | 05330448 | aliguori | struct {
|
706 | 05330448 | aliguori | struct kvm_msrs info;
|
707 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
708 | 05330448 | aliguori | } msr_data; |
709 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
710 | 05330448 | aliguori | int ret, i, n;
|
711 | 05330448 | aliguori | |
712 | 05330448 | aliguori | n = 0;
|
713 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_CS; |
714 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_ESP; |
715 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_EIP; |
716 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
717 | 05330448 | aliguori | msrs[n++].index = MSR_STAR; |
718 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_TSC; |
719 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
720 | 05330448 | aliguori | /* FIXME lm_capable_kernel */
|
721 | 05330448 | aliguori | msrs[n++].index = MSR_CSTAR; |
722 | 05330448 | aliguori | msrs[n++].index = MSR_KERNELGSBASE; |
723 | 05330448 | aliguori | msrs[n++].index = MSR_FMASK; |
724 | 05330448 | aliguori | msrs[n++].index = MSR_LSTAR; |
725 | 05330448 | aliguori | #endif
|
726 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_SYSTEM_TIME; |
727 | 1a03675d | Glauber Costa | msrs[n++].index = MSR_KVM_WALL_CLOCK; |
728 | 1a03675d | Glauber Costa | |
729 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
730 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); |
731 | 05330448 | aliguori | if (ret < 0) |
732 | 05330448 | aliguori | return ret;
|
733 | 05330448 | aliguori | |
734 | 05330448 | aliguori | for (i = 0; i < ret; i++) { |
735 | 05330448 | aliguori | switch (msrs[i].index) {
|
736 | 05330448 | aliguori | case MSR_IA32_SYSENTER_CS:
|
737 | 05330448 | aliguori | env->sysenter_cs = msrs[i].data; |
738 | 05330448 | aliguori | break;
|
739 | 05330448 | aliguori | case MSR_IA32_SYSENTER_ESP:
|
740 | 05330448 | aliguori | env->sysenter_esp = msrs[i].data; |
741 | 05330448 | aliguori | break;
|
742 | 05330448 | aliguori | case MSR_IA32_SYSENTER_EIP:
|
743 | 05330448 | aliguori | env->sysenter_eip = msrs[i].data; |
744 | 05330448 | aliguori | break;
|
745 | 05330448 | aliguori | case MSR_STAR:
|
746 | 05330448 | aliguori | env->star = msrs[i].data; |
747 | 05330448 | aliguori | break;
|
748 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
749 | 05330448 | aliguori | case MSR_CSTAR:
|
750 | 05330448 | aliguori | env->cstar = msrs[i].data; |
751 | 05330448 | aliguori | break;
|
752 | 05330448 | aliguori | case MSR_KERNELGSBASE:
|
753 | 05330448 | aliguori | env->kernelgsbase = msrs[i].data; |
754 | 05330448 | aliguori | break;
|
755 | 05330448 | aliguori | case MSR_FMASK:
|
756 | 05330448 | aliguori | env->fmask = msrs[i].data; |
757 | 05330448 | aliguori | break;
|
758 | 05330448 | aliguori | case MSR_LSTAR:
|
759 | 05330448 | aliguori | env->lstar = msrs[i].data; |
760 | 05330448 | aliguori | break;
|
761 | 05330448 | aliguori | #endif
|
762 | 05330448 | aliguori | case MSR_IA32_TSC:
|
763 | 05330448 | aliguori | env->tsc = msrs[i].data; |
764 | 05330448 | aliguori | break;
|
765 | 1a03675d | Glauber Costa | case MSR_KVM_SYSTEM_TIME:
|
766 | 1a03675d | Glauber Costa | env->system_time_msr = msrs[i].data; |
767 | 1a03675d | Glauber Costa | break;
|
768 | 1a03675d | Glauber Costa | case MSR_KVM_WALL_CLOCK:
|
769 | 1a03675d | Glauber Costa | env->wall_clock_msr = msrs[i].data; |
770 | 1a03675d | Glauber Costa | break;
|
771 | 05330448 | aliguori | } |
772 | 05330448 | aliguori | } |
773 | 05330448 | aliguori | |
774 | 05330448 | aliguori | return 0; |
775 | 05330448 | aliguori | } |
776 | 05330448 | aliguori | |
777 | 9bdbe550 | Hollis Blanchard | static int kvm_put_mp_state(CPUState *env) |
778 | 9bdbe550 | Hollis Blanchard | { |
779 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
|
780 | 9bdbe550 | Hollis Blanchard | |
781 | 9bdbe550 | Hollis Blanchard | return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
|
782 | 9bdbe550 | Hollis Blanchard | } |
783 | 9bdbe550 | Hollis Blanchard | |
784 | 9bdbe550 | Hollis Blanchard | static int kvm_get_mp_state(CPUState *env) |
785 | 9bdbe550 | Hollis Blanchard | { |
786 | 9bdbe550 | Hollis Blanchard | struct kvm_mp_state mp_state;
|
787 | 9bdbe550 | Hollis Blanchard | int ret;
|
788 | 9bdbe550 | Hollis Blanchard | |
789 | 9bdbe550 | Hollis Blanchard | ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state); |
790 | 9bdbe550 | Hollis Blanchard | if (ret < 0) { |
791 | 9bdbe550 | Hollis Blanchard | return ret;
|
792 | 9bdbe550 | Hollis Blanchard | } |
793 | 9bdbe550 | Hollis Blanchard | env->mp_state = mp_state.mp_state; |
794 | 9bdbe550 | Hollis Blanchard | return 0; |
795 | 9bdbe550 | Hollis Blanchard | } |
796 | 9bdbe550 | Hollis Blanchard | |
797 | ea643051 | Jan Kiszka | static int kvm_put_vcpu_events(CPUState *env, int level) |
798 | a0fb002c | Jan Kiszka | { |
799 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
800 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
801 | a0fb002c | Jan Kiszka | |
802 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
803 | a0fb002c | Jan Kiszka | return 0; |
804 | a0fb002c | Jan Kiszka | } |
805 | a0fb002c | Jan Kiszka | |
806 | 31827373 | Jan Kiszka | events.exception.injected = (env->exception_injected >= 0);
|
807 | 31827373 | Jan Kiszka | events.exception.nr = env->exception_injected; |
808 | a0fb002c | Jan Kiszka | events.exception.has_error_code = env->has_error_code; |
809 | a0fb002c | Jan Kiszka | events.exception.error_code = env->error_code; |
810 | a0fb002c | Jan Kiszka | |
811 | a0fb002c | Jan Kiszka | events.interrupt.injected = (env->interrupt_injected >= 0);
|
812 | a0fb002c | Jan Kiszka | events.interrupt.nr = env->interrupt_injected; |
813 | a0fb002c | Jan Kiszka | events.interrupt.soft = env->soft_interrupt; |
814 | a0fb002c | Jan Kiszka | |
815 | a0fb002c | Jan Kiszka | events.nmi.injected = env->nmi_injected; |
816 | a0fb002c | Jan Kiszka | events.nmi.pending = env->nmi_pending; |
817 | a0fb002c | Jan Kiszka | events.nmi.masked = !!(env->hflags2 & HF2_NMI_MASK); |
818 | a0fb002c | Jan Kiszka | |
819 | a0fb002c | Jan Kiszka | events.sipi_vector = env->sipi_vector; |
820 | a0fb002c | Jan Kiszka | |
821 | ea643051 | Jan Kiszka | events.flags = 0;
|
822 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
823 | ea643051 | Jan Kiszka | events.flags |= |
824 | ea643051 | Jan Kiszka | KVM_VCPUEVENT_VALID_NMI_PENDING | KVM_VCPUEVENT_VALID_SIPI_VECTOR; |
825 | ea643051 | Jan Kiszka | } |
826 | aee028b9 | Jan Kiszka | |
827 | a0fb002c | Jan Kiszka | return kvm_vcpu_ioctl(env, KVM_SET_VCPU_EVENTS, &events);
|
828 | a0fb002c | Jan Kiszka | #else
|
829 | a0fb002c | Jan Kiszka | return 0; |
830 | a0fb002c | Jan Kiszka | #endif
|
831 | a0fb002c | Jan Kiszka | } |
832 | a0fb002c | Jan Kiszka | |
833 | a0fb002c | Jan Kiszka | static int kvm_get_vcpu_events(CPUState *env) |
834 | a0fb002c | Jan Kiszka | { |
835 | a0fb002c | Jan Kiszka | #ifdef KVM_CAP_VCPU_EVENTS
|
836 | a0fb002c | Jan Kiszka | struct kvm_vcpu_events events;
|
837 | a0fb002c | Jan Kiszka | int ret;
|
838 | a0fb002c | Jan Kiszka | |
839 | a0fb002c | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
840 | a0fb002c | Jan Kiszka | return 0; |
841 | a0fb002c | Jan Kiszka | } |
842 | a0fb002c | Jan Kiszka | |
843 | a0fb002c | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_GET_VCPU_EVENTS, &events); |
844 | a0fb002c | Jan Kiszka | if (ret < 0) { |
845 | a0fb002c | Jan Kiszka | return ret;
|
846 | a0fb002c | Jan Kiszka | } |
847 | 31827373 | Jan Kiszka | env->exception_injected = |
848 | a0fb002c | Jan Kiszka | events.exception.injected ? events.exception.nr : -1;
|
849 | a0fb002c | Jan Kiszka | env->has_error_code = events.exception.has_error_code; |
850 | a0fb002c | Jan Kiszka | env->error_code = events.exception.error_code; |
851 | a0fb002c | Jan Kiszka | |
852 | a0fb002c | Jan Kiszka | env->interrupt_injected = |
853 | a0fb002c | Jan Kiszka | events.interrupt.injected ? events.interrupt.nr : -1;
|
854 | a0fb002c | Jan Kiszka | env->soft_interrupt = events.interrupt.soft; |
855 | a0fb002c | Jan Kiszka | |
856 | a0fb002c | Jan Kiszka | env->nmi_injected = events.nmi.injected; |
857 | a0fb002c | Jan Kiszka | env->nmi_pending = events.nmi.pending; |
858 | a0fb002c | Jan Kiszka | if (events.nmi.masked) {
|
859 | a0fb002c | Jan Kiszka | env->hflags2 |= HF2_NMI_MASK; |
860 | a0fb002c | Jan Kiszka | } else {
|
861 | a0fb002c | Jan Kiszka | env->hflags2 &= ~HF2_NMI_MASK; |
862 | a0fb002c | Jan Kiszka | } |
863 | a0fb002c | Jan Kiszka | |
864 | a0fb002c | Jan Kiszka | env->sipi_vector = events.sipi_vector; |
865 | a0fb002c | Jan Kiszka | #endif
|
866 | a0fb002c | Jan Kiszka | |
867 | a0fb002c | Jan Kiszka | return 0; |
868 | a0fb002c | Jan Kiszka | } |
869 | a0fb002c | Jan Kiszka | |
870 | b0b1d690 | Jan Kiszka | static int kvm_guest_debug_workarounds(CPUState *env) |
871 | b0b1d690 | Jan Kiszka | { |
872 | b0b1d690 | Jan Kiszka | int ret = 0; |
873 | b0b1d690 | Jan Kiszka | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
874 | b0b1d690 | Jan Kiszka | unsigned long reinject_trap = 0; |
875 | b0b1d690 | Jan Kiszka | |
876 | b0b1d690 | Jan Kiszka | if (!kvm_has_vcpu_events()) {
|
877 | b0b1d690 | Jan Kiszka | if (env->exception_injected == 1) { |
878 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_DB; |
879 | b0b1d690 | Jan Kiszka | } else if (env->exception_injected == 3) { |
880 | b0b1d690 | Jan Kiszka | reinject_trap = KVM_GUESTDBG_INJECT_BP; |
881 | b0b1d690 | Jan Kiszka | } |
882 | b0b1d690 | Jan Kiszka | env->exception_injected = -1;
|
883 | b0b1d690 | Jan Kiszka | } |
884 | b0b1d690 | Jan Kiszka | |
885 | b0b1d690 | Jan Kiszka | /*
|
886 | b0b1d690 | Jan Kiszka | * Kernels before KVM_CAP_X86_ROBUST_SINGLESTEP overwrote flags.TF
|
887 | b0b1d690 | Jan Kiszka | * injected via SET_GUEST_DEBUG while updating GP regs. Work around this
|
888 | b0b1d690 | Jan Kiszka | * by updating the debug state once again if single-stepping is on.
|
889 | b0b1d690 | Jan Kiszka | * Another reason to call kvm_update_guest_debug here is a pending debug
|
890 | b0b1d690 | Jan Kiszka | * trap raise by the guest. On kernels without SET_VCPU_EVENTS we have to
|
891 | b0b1d690 | Jan Kiszka | * reinject them via SET_GUEST_DEBUG.
|
892 | b0b1d690 | Jan Kiszka | */
|
893 | b0b1d690 | Jan Kiszka | if (reinject_trap ||
|
894 | b0b1d690 | Jan Kiszka | (!kvm_has_robust_singlestep() && env->singlestep_enabled)) { |
895 | b0b1d690 | Jan Kiszka | ret = kvm_update_guest_debug(env, reinject_trap); |
896 | b0b1d690 | Jan Kiszka | } |
897 | b0b1d690 | Jan Kiszka | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |
898 | b0b1d690 | Jan Kiszka | return ret;
|
899 | b0b1d690 | Jan Kiszka | } |
900 | b0b1d690 | Jan Kiszka | |
901 | ff44f1a3 | Jan Kiszka | static int kvm_put_debugregs(CPUState *env) |
902 | ff44f1a3 | Jan Kiszka | { |
903 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
904 | ff44f1a3 | Jan Kiszka | struct kvm_debugregs dbgregs;
|
905 | ff44f1a3 | Jan Kiszka | int i;
|
906 | ff44f1a3 | Jan Kiszka | |
907 | ff44f1a3 | Jan Kiszka | if (!kvm_has_debugregs()) {
|
908 | ff44f1a3 | Jan Kiszka | return 0; |
909 | ff44f1a3 | Jan Kiszka | } |
910 | ff44f1a3 | Jan Kiszka | |
911 | ff44f1a3 | Jan Kiszka | for (i = 0; i < 4; i++) { |
912 | ff44f1a3 | Jan Kiszka | dbgregs.db[i] = env->dr[i]; |
913 | ff44f1a3 | Jan Kiszka | } |
914 | ff44f1a3 | Jan Kiszka | dbgregs.dr6 = env->dr[6];
|
915 | ff44f1a3 | Jan Kiszka | dbgregs.dr7 = env->dr[7];
|
916 | ff44f1a3 | Jan Kiszka | dbgregs.flags = 0;
|
917 | ff44f1a3 | Jan Kiszka | |
918 | ff44f1a3 | Jan Kiszka | return kvm_vcpu_ioctl(env, KVM_SET_DEBUGREGS, &dbgregs);
|
919 | ff44f1a3 | Jan Kiszka | #else
|
920 | ff44f1a3 | Jan Kiszka | return 0; |
921 | ff44f1a3 | Jan Kiszka | #endif
|
922 | ff44f1a3 | Jan Kiszka | } |
923 | ff44f1a3 | Jan Kiszka | |
924 | ff44f1a3 | Jan Kiszka | static int kvm_get_debugregs(CPUState *env) |
925 | ff44f1a3 | Jan Kiszka | { |
926 | ff44f1a3 | Jan Kiszka | #ifdef KVM_CAP_DEBUGREGS
|
927 | ff44f1a3 | Jan Kiszka | struct kvm_debugregs dbgregs;
|
928 | ff44f1a3 | Jan Kiszka | int i, ret;
|
929 | ff44f1a3 | Jan Kiszka | |
930 | ff44f1a3 | Jan Kiszka | if (!kvm_has_debugregs()) {
|
931 | ff44f1a3 | Jan Kiszka | return 0; |
932 | ff44f1a3 | Jan Kiszka | } |
933 | ff44f1a3 | Jan Kiszka | |
934 | ff44f1a3 | Jan Kiszka | ret = kvm_vcpu_ioctl(env, KVM_GET_DEBUGREGS, &dbgregs); |
935 | ff44f1a3 | Jan Kiszka | if (ret < 0) { |
936 | ff44f1a3 | Jan Kiszka | return ret;
|
937 | ff44f1a3 | Jan Kiszka | } |
938 | ff44f1a3 | Jan Kiszka | for (i = 0; i < 4; i++) { |
939 | ff44f1a3 | Jan Kiszka | env->dr[i] = dbgregs.db[i]; |
940 | ff44f1a3 | Jan Kiszka | } |
941 | ff44f1a3 | Jan Kiszka | env->dr[4] = env->dr[6] = dbgregs.dr6; |
942 | ff44f1a3 | Jan Kiszka | env->dr[5] = env->dr[7] = dbgregs.dr7; |
943 | ff44f1a3 | Jan Kiszka | #endif
|
944 | ff44f1a3 | Jan Kiszka | |
945 | ff44f1a3 | Jan Kiszka | return 0; |
946 | ff44f1a3 | Jan Kiszka | } |
947 | ff44f1a3 | Jan Kiszka | |
948 | ea375f9a | Jan Kiszka | int kvm_arch_put_registers(CPUState *env, int level) |
949 | 05330448 | aliguori | { |
950 | 05330448 | aliguori | int ret;
|
951 | 05330448 | aliguori | |
952 | dbaa07c4 | Jan Kiszka | assert(cpu_is_stopped(env) || qemu_cpu_self(env)); |
953 | dbaa07c4 | Jan Kiszka | |
954 | 05330448 | aliguori | ret = kvm_getput_regs(env, 1);
|
955 | 05330448 | aliguori | if (ret < 0) |
956 | 05330448 | aliguori | return ret;
|
957 | 05330448 | aliguori | |
958 | 05330448 | aliguori | ret = kvm_put_fpu(env); |
959 | 05330448 | aliguori | if (ret < 0) |
960 | 05330448 | aliguori | return ret;
|
961 | 05330448 | aliguori | |
962 | 05330448 | aliguori | ret = kvm_put_sregs(env); |
963 | 05330448 | aliguori | if (ret < 0) |
964 | 05330448 | aliguori | return ret;
|
965 | 05330448 | aliguori | |
966 | ea643051 | Jan Kiszka | ret = kvm_put_msrs(env, level); |
967 | 05330448 | aliguori | if (ret < 0) |
968 | 05330448 | aliguori | return ret;
|
969 | 05330448 | aliguori | |
970 | ea643051 | Jan Kiszka | if (level >= KVM_PUT_RESET_STATE) {
|
971 | ea643051 | Jan Kiszka | ret = kvm_put_mp_state(env); |
972 | ea643051 | Jan Kiszka | if (ret < 0) |
973 | ea643051 | Jan Kiszka | return ret;
|
974 | ea643051 | Jan Kiszka | } |
975 | f8d926e9 | Jan Kiszka | |
976 | ea643051 | Jan Kiszka | ret = kvm_put_vcpu_events(env, level); |
977 | a0fb002c | Jan Kiszka | if (ret < 0) |
978 | a0fb002c | Jan Kiszka | return ret;
|
979 | a0fb002c | Jan Kiszka | |
980 | b0b1d690 | Jan Kiszka | /* must be last */
|
981 | b0b1d690 | Jan Kiszka | ret = kvm_guest_debug_workarounds(env); |
982 | b0b1d690 | Jan Kiszka | if (ret < 0) |
983 | b0b1d690 | Jan Kiszka | return ret;
|
984 | b0b1d690 | Jan Kiszka | |
985 | ff44f1a3 | Jan Kiszka | ret = kvm_put_debugregs(env); |
986 | ff44f1a3 | Jan Kiszka | if (ret < 0) |
987 | ff44f1a3 | Jan Kiszka | return ret;
|
988 | ff44f1a3 | Jan Kiszka | |
989 | 05330448 | aliguori | return 0; |
990 | 05330448 | aliguori | } |
991 | 05330448 | aliguori | |
992 | 05330448 | aliguori | int kvm_arch_get_registers(CPUState *env)
|
993 | 05330448 | aliguori | { |
994 | 05330448 | aliguori | int ret;
|
995 | 05330448 | aliguori | |
996 | dbaa07c4 | Jan Kiszka | assert(cpu_is_stopped(env) || qemu_cpu_self(env)); |
997 | dbaa07c4 | Jan Kiszka | |
998 | 05330448 | aliguori | ret = kvm_getput_regs(env, 0);
|
999 | 05330448 | aliguori | if (ret < 0) |
1000 | 05330448 | aliguori | return ret;
|
1001 | 05330448 | aliguori | |
1002 | 05330448 | aliguori | ret = kvm_get_fpu(env); |
1003 | 05330448 | aliguori | if (ret < 0) |
1004 | 05330448 | aliguori | return ret;
|
1005 | 05330448 | aliguori | |
1006 | 05330448 | aliguori | ret = kvm_get_sregs(env); |
1007 | 05330448 | aliguori | if (ret < 0) |
1008 | 05330448 | aliguori | return ret;
|
1009 | 05330448 | aliguori | |
1010 | 05330448 | aliguori | ret = kvm_get_msrs(env); |
1011 | 05330448 | aliguori | if (ret < 0) |
1012 | 05330448 | aliguori | return ret;
|
1013 | 05330448 | aliguori | |
1014 | 5a2e3c2e | Jan Kiszka | ret = kvm_get_mp_state(env); |
1015 | 5a2e3c2e | Jan Kiszka | if (ret < 0) |
1016 | 5a2e3c2e | Jan Kiszka | return ret;
|
1017 | 5a2e3c2e | Jan Kiszka | |
1018 | a0fb002c | Jan Kiszka | ret = kvm_get_vcpu_events(env); |
1019 | a0fb002c | Jan Kiszka | if (ret < 0) |
1020 | a0fb002c | Jan Kiszka | return ret;
|
1021 | a0fb002c | Jan Kiszka | |
1022 | ff44f1a3 | Jan Kiszka | ret = kvm_get_debugregs(env); |
1023 | ff44f1a3 | Jan Kiszka | if (ret < 0) |
1024 | ff44f1a3 | Jan Kiszka | return ret;
|
1025 | ff44f1a3 | Jan Kiszka | |
1026 | 05330448 | aliguori | return 0; |
1027 | 05330448 | aliguori | } |
1028 | 05330448 | aliguori | |
1029 | 05330448 | aliguori | int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) |
1030 | 05330448 | aliguori | { |
1031 | 05330448 | aliguori | /* Try to inject an interrupt if the guest can accept it */
|
1032 | 05330448 | aliguori | if (run->ready_for_interrupt_injection &&
|
1033 | 05330448 | aliguori | (env->interrupt_request & CPU_INTERRUPT_HARD) && |
1034 | 05330448 | aliguori | (env->eflags & IF_MASK)) { |
1035 | 05330448 | aliguori | int irq;
|
1036 | 05330448 | aliguori | |
1037 | 05330448 | aliguori | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
1038 | 05330448 | aliguori | irq = cpu_get_pic_interrupt(env); |
1039 | 05330448 | aliguori | if (irq >= 0) { |
1040 | 05330448 | aliguori | struct kvm_interrupt intr;
|
1041 | 05330448 | aliguori | intr.irq = irq; |
1042 | 05330448 | aliguori | /* FIXME: errors */
|
1043 | 8c0d577e | Blue Swirl | DPRINTF("injected interrupt %d\n", irq);
|
1044 | 05330448 | aliguori | kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
1045 | 05330448 | aliguori | } |
1046 | 05330448 | aliguori | } |
1047 | 05330448 | aliguori | |
1048 | 05330448 | aliguori | /* If we have an interrupt but the guest is not ready to receive an
|
1049 | 05330448 | aliguori | * interrupt, request an interrupt window exit. This will
|
1050 | 05330448 | aliguori | * cause a return to userspace as soon as the guest is ready to
|
1051 | 05330448 | aliguori | * receive interrupts. */
|
1052 | 05330448 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_HARD))
|
1053 | 05330448 | aliguori | run->request_interrupt_window = 1;
|
1054 | 05330448 | aliguori | else
|
1055 | 05330448 | aliguori | run->request_interrupt_window = 0;
|
1056 | 05330448 | aliguori | |
1057 | 8c0d577e | Blue Swirl | DPRINTF("setting tpr\n");
|
1058 | 05330448 | aliguori | run->cr8 = cpu_get_apic_tpr(env); |
1059 | 05330448 | aliguori | |
1060 | 05330448 | aliguori | return 0; |
1061 | 05330448 | aliguori | } |
1062 | 05330448 | aliguori | |
1063 | 05330448 | aliguori | int kvm_arch_post_run(CPUState *env, struct kvm_run *run) |
1064 | 05330448 | aliguori | { |
1065 | 05330448 | aliguori | if (run->if_flag)
|
1066 | 05330448 | aliguori | env->eflags |= IF_MASK; |
1067 | 05330448 | aliguori | else
|
1068 | 05330448 | aliguori | env->eflags &= ~IF_MASK; |
1069 | 05330448 | aliguori | |
1070 | 05330448 | aliguori | cpu_set_apic_tpr(env, run->cr8); |
1071 | 05330448 | aliguori | cpu_set_apic_base(env, run->apic_base); |
1072 | 05330448 | aliguori | |
1073 | 05330448 | aliguori | return 0; |
1074 | 05330448 | aliguori | } |
1075 | 05330448 | aliguori | |
1076 | 0af691d7 | Marcelo Tosatti | int kvm_arch_process_irqchip_events(CPUState *env)
|
1077 | 0af691d7 | Marcelo Tosatti | { |
1078 | 0af691d7 | Marcelo Tosatti | if (env->interrupt_request & CPU_INTERRUPT_INIT) {
|
1079 | 0af691d7 | Marcelo Tosatti | kvm_cpu_synchronize_state(env); |
1080 | 0af691d7 | Marcelo Tosatti | do_cpu_init(env); |
1081 | 0af691d7 | Marcelo Tosatti | env->exception_index = EXCP_HALTED; |
1082 | 0af691d7 | Marcelo Tosatti | } |
1083 | 0af691d7 | Marcelo Tosatti | |
1084 | 0af691d7 | Marcelo Tosatti | if (env->interrupt_request & CPU_INTERRUPT_SIPI) {
|
1085 | 0af691d7 | Marcelo Tosatti | kvm_cpu_synchronize_state(env); |
1086 | 0af691d7 | Marcelo Tosatti | do_cpu_sipi(env); |
1087 | 0af691d7 | Marcelo Tosatti | } |
1088 | 0af691d7 | Marcelo Tosatti | |
1089 | 0af691d7 | Marcelo Tosatti | return env->halted;
|
1090 | 0af691d7 | Marcelo Tosatti | } |
1091 | 0af691d7 | Marcelo Tosatti | |
1092 | 05330448 | aliguori | static int kvm_handle_halt(CPUState *env) |
1093 | 05330448 | aliguori | { |
1094 | 05330448 | aliguori | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
1095 | 05330448 | aliguori | (env->eflags & IF_MASK)) && |
1096 | 05330448 | aliguori | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { |
1097 | 05330448 | aliguori | env->halted = 1;
|
1098 | 05330448 | aliguori | env->exception_index = EXCP_HLT; |
1099 | 05330448 | aliguori | return 0; |
1100 | 05330448 | aliguori | } |
1101 | 05330448 | aliguori | |
1102 | 05330448 | aliguori | return 1; |
1103 | 05330448 | aliguori | } |
1104 | 05330448 | aliguori | |
1105 | 05330448 | aliguori | int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) |
1106 | 05330448 | aliguori | { |
1107 | 05330448 | aliguori | int ret = 0; |
1108 | 05330448 | aliguori | |
1109 | 05330448 | aliguori | switch (run->exit_reason) {
|
1110 | 05330448 | aliguori | case KVM_EXIT_HLT:
|
1111 | 8c0d577e | Blue Swirl | DPRINTF("handle_hlt\n");
|
1112 | 05330448 | aliguori | ret = kvm_handle_halt(env); |
1113 | 05330448 | aliguori | break;
|
1114 | 05330448 | aliguori | } |
1115 | 05330448 | aliguori | |
1116 | 05330448 | aliguori | return ret;
|
1117 | 05330448 | aliguori | } |
1118 | e22a25c9 | aliguori | |
1119 | e22a25c9 | aliguori | #ifdef KVM_CAP_SET_GUEST_DEBUG
|
1120 | e22a25c9 | aliguori | int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1121 | e22a25c9 | aliguori | { |
1122 | 38972938 | Juan Quintela | static const uint8_t int3 = 0xcc; |
1123 | 64bf3f4e | aliguori | |
1124 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) || |
1125 | 64bf3f4e | aliguori | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1)) |
1126 | e22a25c9 | aliguori | return -EINVAL;
|
1127 | e22a25c9 | aliguori | return 0; |
1128 | e22a25c9 | aliguori | } |
1129 | e22a25c9 | aliguori | |
1130 | e22a25c9 | aliguori | int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) |
1131 | e22a25c9 | aliguori | { |
1132 | e22a25c9 | aliguori | uint8_t int3; |
1133 | e22a25c9 | aliguori | |
1134 | e22a25c9 | aliguori | if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc || |
1135 | 64bf3f4e | aliguori | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) |
1136 | e22a25c9 | aliguori | return -EINVAL;
|
1137 | e22a25c9 | aliguori | return 0; |
1138 | e22a25c9 | aliguori | } |
1139 | e22a25c9 | aliguori | |
1140 | e22a25c9 | aliguori | static struct { |
1141 | e22a25c9 | aliguori | target_ulong addr; |
1142 | e22a25c9 | aliguori | int len;
|
1143 | e22a25c9 | aliguori | int type;
|
1144 | e22a25c9 | aliguori | } hw_breakpoint[4];
|
1145 | e22a25c9 | aliguori | |
1146 | e22a25c9 | aliguori | static int nb_hw_breakpoint; |
1147 | e22a25c9 | aliguori | |
1148 | e22a25c9 | aliguori | static int find_hw_breakpoint(target_ulong addr, int len, int type) |
1149 | e22a25c9 | aliguori | { |
1150 | e22a25c9 | aliguori | int n;
|
1151 | e22a25c9 | aliguori | |
1152 | e22a25c9 | aliguori | for (n = 0; n < nb_hw_breakpoint; n++) |
1153 | e22a25c9 | aliguori | if (hw_breakpoint[n].addr == addr && hw_breakpoint[n].type == type &&
|
1154 | e22a25c9 | aliguori | (hw_breakpoint[n].len == len || len == -1))
|
1155 | e22a25c9 | aliguori | return n;
|
1156 | e22a25c9 | aliguori | return -1; |
1157 | e22a25c9 | aliguori | } |
1158 | e22a25c9 | aliguori | |
1159 | e22a25c9 | aliguori | int kvm_arch_insert_hw_breakpoint(target_ulong addr,
|
1160 | e22a25c9 | aliguori | target_ulong len, int type)
|
1161 | e22a25c9 | aliguori | { |
1162 | e22a25c9 | aliguori | switch (type) {
|
1163 | e22a25c9 | aliguori | case GDB_BREAKPOINT_HW:
|
1164 | e22a25c9 | aliguori | len = 1;
|
1165 | e22a25c9 | aliguori | break;
|
1166 | e22a25c9 | aliguori | case GDB_WATCHPOINT_WRITE:
|
1167 | e22a25c9 | aliguori | case GDB_WATCHPOINT_ACCESS:
|
1168 | e22a25c9 | aliguori | switch (len) {
|
1169 | e22a25c9 | aliguori | case 1: |
1170 | e22a25c9 | aliguori | break;
|
1171 | e22a25c9 | aliguori | case 2: |
1172 | e22a25c9 | aliguori | case 4: |
1173 | e22a25c9 | aliguori | case 8: |
1174 | e22a25c9 | aliguori | if (addr & (len - 1)) |
1175 | e22a25c9 | aliguori | return -EINVAL;
|
1176 | e22a25c9 | aliguori | break;
|
1177 | e22a25c9 | aliguori | default:
|
1178 | e22a25c9 | aliguori | return -EINVAL;
|
1179 | e22a25c9 | aliguori | } |
1180 | e22a25c9 | aliguori | break;
|
1181 | e22a25c9 | aliguori | default:
|
1182 | e22a25c9 | aliguori | return -ENOSYS;
|
1183 | e22a25c9 | aliguori | } |
1184 | e22a25c9 | aliguori | |
1185 | e22a25c9 | aliguori | if (nb_hw_breakpoint == 4) |
1186 | e22a25c9 | aliguori | return -ENOBUFS;
|
1187 | e22a25c9 | aliguori | |
1188 | e22a25c9 | aliguori | if (find_hw_breakpoint(addr, len, type) >= 0) |
1189 | e22a25c9 | aliguori | return -EEXIST;
|
1190 | e22a25c9 | aliguori | |
1191 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].addr = addr; |
1192 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].len = len; |
1193 | e22a25c9 | aliguori | hw_breakpoint[nb_hw_breakpoint].type = type; |
1194 | e22a25c9 | aliguori | nb_hw_breakpoint++; |
1195 | e22a25c9 | aliguori | |
1196 | e22a25c9 | aliguori | return 0; |
1197 | e22a25c9 | aliguori | } |
1198 | e22a25c9 | aliguori | |
1199 | e22a25c9 | aliguori | int kvm_arch_remove_hw_breakpoint(target_ulong addr,
|
1200 | e22a25c9 | aliguori | target_ulong len, int type)
|
1201 | e22a25c9 | aliguori | { |
1202 | e22a25c9 | aliguori | int n;
|
1203 | e22a25c9 | aliguori | |
1204 | e22a25c9 | aliguori | n = find_hw_breakpoint(addr, (type == GDB_BREAKPOINT_HW) ? 1 : len, type);
|
1205 | e22a25c9 | aliguori | if (n < 0) |
1206 | e22a25c9 | aliguori | return -ENOENT;
|
1207 | e22a25c9 | aliguori | |
1208 | e22a25c9 | aliguori | nb_hw_breakpoint--; |
1209 | e22a25c9 | aliguori | hw_breakpoint[n] = hw_breakpoint[nb_hw_breakpoint]; |
1210 | e22a25c9 | aliguori | |
1211 | e22a25c9 | aliguori | return 0; |
1212 | e22a25c9 | aliguori | } |
1213 | e22a25c9 | aliguori | |
1214 | e22a25c9 | aliguori | void kvm_arch_remove_all_hw_breakpoints(void) |
1215 | e22a25c9 | aliguori | { |
1216 | e22a25c9 | aliguori | nb_hw_breakpoint = 0;
|
1217 | e22a25c9 | aliguori | } |
1218 | e22a25c9 | aliguori | |
1219 | e22a25c9 | aliguori | static CPUWatchpoint hw_watchpoint;
|
1220 | e22a25c9 | aliguori | |
1221 | e22a25c9 | aliguori | int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info) |
1222 | e22a25c9 | aliguori | { |
1223 | e22a25c9 | aliguori | int handle = 0; |
1224 | e22a25c9 | aliguori | int n;
|
1225 | e22a25c9 | aliguori | |
1226 | e22a25c9 | aliguori | if (arch_info->exception == 1) { |
1227 | e22a25c9 | aliguori | if (arch_info->dr6 & (1 << 14)) { |
1228 | e22a25c9 | aliguori | if (cpu_single_env->singlestep_enabled)
|
1229 | e22a25c9 | aliguori | handle = 1;
|
1230 | e22a25c9 | aliguori | } else {
|
1231 | e22a25c9 | aliguori | for (n = 0; n < 4; n++) |
1232 | e22a25c9 | aliguori | if (arch_info->dr6 & (1 << n)) |
1233 | e22a25c9 | aliguori | switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { |
1234 | e22a25c9 | aliguori | case 0x0: |
1235 | e22a25c9 | aliguori | handle = 1;
|
1236 | e22a25c9 | aliguori | break;
|
1237 | e22a25c9 | aliguori | case 0x1: |
1238 | e22a25c9 | aliguori | handle = 1;
|
1239 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1240 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1241 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_WRITE; |
1242 | e22a25c9 | aliguori | break;
|
1243 | e22a25c9 | aliguori | case 0x3: |
1244 | e22a25c9 | aliguori | handle = 1;
|
1245 | e22a25c9 | aliguori | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1246 | e22a25c9 | aliguori | hw_watchpoint.vaddr = hw_breakpoint[n].addr; |
1247 | e22a25c9 | aliguori | hw_watchpoint.flags = BP_MEM_ACCESS; |
1248 | e22a25c9 | aliguori | break;
|
1249 | e22a25c9 | aliguori | } |
1250 | e22a25c9 | aliguori | } |
1251 | e22a25c9 | aliguori | } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) |
1252 | e22a25c9 | aliguori | handle = 1;
|
1253 | e22a25c9 | aliguori | |
1254 | b0b1d690 | Jan Kiszka | if (!handle) {
|
1255 | b0b1d690 | Jan Kiszka | cpu_synchronize_state(cpu_single_env); |
1256 | b0b1d690 | Jan Kiszka | assert(cpu_single_env->exception_injected == -1);
|
1257 | b0b1d690 | Jan Kiszka | |
1258 | b0b1d690 | Jan Kiszka | cpu_single_env->exception_injected = arch_info->exception; |
1259 | b0b1d690 | Jan Kiszka | cpu_single_env->has_error_code = 0;
|
1260 | b0b1d690 | Jan Kiszka | } |
1261 | e22a25c9 | aliguori | |
1262 | e22a25c9 | aliguori | return handle;
|
1263 | e22a25c9 | aliguori | } |
1264 | e22a25c9 | aliguori | |
1265 | e22a25c9 | aliguori | void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg) |
1266 | e22a25c9 | aliguori | { |
1267 | e22a25c9 | aliguori | const uint8_t type_code[] = {
|
1268 | e22a25c9 | aliguori | [GDB_BREAKPOINT_HW] = 0x0,
|
1269 | e22a25c9 | aliguori | [GDB_WATCHPOINT_WRITE] = 0x1,
|
1270 | e22a25c9 | aliguori | [GDB_WATCHPOINT_ACCESS] = 0x3
|
1271 | e22a25c9 | aliguori | }; |
1272 | e22a25c9 | aliguori | const uint8_t len_code[] = {
|
1273 | e22a25c9 | aliguori | [1] = 0x0, [2] = 0x1, [4] = 0x3, [8] = 0x2 |
1274 | e22a25c9 | aliguori | }; |
1275 | e22a25c9 | aliguori | int n;
|
1276 | e22a25c9 | aliguori | |
1277 | e22a25c9 | aliguori | if (kvm_sw_breakpoints_active(env))
|
1278 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; |
1279 | e22a25c9 | aliguori | |
1280 | e22a25c9 | aliguori | if (nb_hw_breakpoint > 0) { |
1281 | e22a25c9 | aliguori | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; |
1282 | e22a25c9 | aliguori | dbg->arch.debugreg[7] = 0x0600; |
1283 | e22a25c9 | aliguori | for (n = 0; n < nb_hw_breakpoint; n++) { |
1284 | e22a25c9 | aliguori | dbg->arch.debugreg[n] = hw_breakpoint[n].addr; |
1285 | e22a25c9 | aliguori | dbg->arch.debugreg[7] |= (2 << (n * 2)) | |
1286 | e22a25c9 | aliguori | (type_code[hw_breakpoint[n].type] << (16 + n*4)) | |
1287 | e22a25c9 | aliguori | (len_code[hw_breakpoint[n].len] << (18 + n*4)); |
1288 | e22a25c9 | aliguori | } |
1289 | e22a25c9 | aliguori | } |
1290 | e22a25c9 | aliguori | } |
1291 | e22a25c9 | aliguori | #endif /* KVM_CAP_SET_GUEST_DEBUG */ |