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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 | 05330448 | aliguori | |
26 | 05330448 | aliguori | //#define DEBUG_KVM
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27 | 05330448 | aliguori | |
28 | 05330448 | aliguori | #ifdef DEBUG_KVM
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29 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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30 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
31 | 05330448 | aliguori | #else
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32 | 05330448 | aliguori | #define dprintf(fmt, ...) \
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33 | 05330448 | aliguori | do { } while (0) |
34 | 05330448 | aliguori | #endif
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35 | 05330448 | aliguori | |
36 | 05330448 | aliguori | int kvm_arch_init_vcpu(CPUState *env)
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37 | 05330448 | aliguori | { |
38 | 05330448 | aliguori | struct {
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39 | 05330448 | aliguori | struct kvm_cpuid cpuid;
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40 | 05330448 | aliguori | struct kvm_cpuid_entry entries[100]; |
41 | 05330448 | aliguori | } __attribute__((packed)) cpuid_data; |
42 | 40a2d705 | aliguori | uint32_t limit, i, cpuid_i; |
43 | 05330448 | aliguori | uint32_t eax, ebx, ecx, edx; |
44 | 05330448 | aliguori | |
45 | 05330448 | aliguori | cpuid_i = 0;
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46 | 05330448 | aliguori | |
47 | 05330448 | aliguori | cpu_x86_cpuid(env, 0, &eax, &ebx, &ecx, &edx);
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48 | 05330448 | aliguori | limit = eax; |
49 | 05330448 | aliguori | |
50 | 05330448 | aliguori | for (i = 0; i <= limit; i++) { |
51 | 05330448 | aliguori | struct kvm_cpuid_entry *c = &cpuid_data.entries[cpuid_i++];
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52 | 05330448 | aliguori | |
53 | 05330448 | aliguori | cpu_x86_cpuid(env, i, &eax, &ebx, &ecx, &edx); |
54 | 05330448 | aliguori | c->function = i; |
55 | 05330448 | aliguori | c->eax = eax; |
56 | 05330448 | aliguori | c->ebx = ebx; |
57 | 05330448 | aliguori | c->ecx = ecx; |
58 | 05330448 | aliguori | c->edx = edx; |
59 | 05330448 | aliguori | } |
60 | 05330448 | aliguori | |
61 | 05330448 | aliguori | cpu_x86_cpuid(env, 0x80000000, &eax, &ebx, &ecx, &edx);
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62 | 05330448 | aliguori | limit = eax; |
63 | 05330448 | aliguori | |
64 | 05330448 | aliguori | for (i = 0x80000000; i <= limit; i++) { |
65 | 05330448 | aliguori | struct kvm_cpuid_entry *c = &cpuid_data.entries[cpuid_i++];
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66 | 05330448 | aliguori | |
67 | 05330448 | aliguori | cpu_x86_cpuid(env, i, &eax, &ebx, &ecx, &edx); |
68 | 05330448 | aliguori | c->function = i; |
69 | 05330448 | aliguori | c->eax = eax; |
70 | 05330448 | aliguori | c->ebx = ebx; |
71 | 05330448 | aliguori | c->ecx = ecx; |
72 | 05330448 | aliguori | c->edx = edx; |
73 | 05330448 | aliguori | } |
74 | 05330448 | aliguori | |
75 | 05330448 | aliguori | cpuid_data.cpuid.nent = cpuid_i; |
76 | 05330448 | aliguori | |
77 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_CPUID, &cpuid_data);
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78 | 05330448 | aliguori | } |
79 | 05330448 | aliguori | |
80 | 05330448 | aliguori | static int kvm_has_msr_star(CPUState *env) |
81 | 05330448 | aliguori | { |
82 | 05330448 | aliguori | static int has_msr_star; |
83 | 05330448 | aliguori | int ret;
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84 | 05330448 | aliguori | |
85 | 05330448 | aliguori | /* first time */
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86 | 05330448 | aliguori | if (has_msr_star == 0) { |
87 | 05330448 | aliguori | struct kvm_msr_list msr_list, *kvm_msr_list;
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88 | 05330448 | aliguori | |
89 | 05330448 | aliguori | has_msr_star = -1;
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90 | 05330448 | aliguori | |
91 | 05330448 | aliguori | /* Obtain MSR list from KVM. These are the MSRs that we must
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92 | 05330448 | aliguori | * save/restore */
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93 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, &msr_list); |
94 | 05330448 | aliguori | if (ret < 0) |
95 | 05330448 | aliguori | return 0; |
96 | 05330448 | aliguori | |
97 | 05330448 | aliguori | msr_list.nmsrs = 0;
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98 | 05330448 | aliguori | kvm_msr_list = qemu_mallocz(sizeof(msr_list) +
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99 | 05330448 | aliguori | msr_list.nmsrs * sizeof(msr_list.indices[0])); |
100 | 05330448 | aliguori | if (kvm_msr_list == NULL) |
101 | 05330448 | aliguori | return 0; |
102 | 05330448 | aliguori | |
103 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); |
104 | 05330448 | aliguori | if (ret >= 0) { |
105 | 05330448 | aliguori | int i;
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106 | 05330448 | aliguori | |
107 | 05330448 | aliguori | for (i = 0; i < kvm_msr_list->nmsrs; i++) { |
108 | 05330448 | aliguori | if (kvm_msr_list->indices[i] == MSR_STAR) {
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109 | 05330448 | aliguori | has_msr_star = 1;
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110 | 05330448 | aliguori | break;
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111 | 05330448 | aliguori | } |
112 | 05330448 | aliguori | } |
113 | 05330448 | aliguori | } |
114 | 05330448 | aliguori | |
115 | 05330448 | aliguori | free(kvm_msr_list); |
116 | 05330448 | aliguori | } |
117 | 05330448 | aliguori | |
118 | 05330448 | aliguori | if (has_msr_star == 1) |
119 | 05330448 | aliguori | return 1; |
120 | 05330448 | aliguori | return 0; |
121 | 05330448 | aliguori | } |
122 | 05330448 | aliguori | |
123 | 05330448 | aliguori | int kvm_arch_init(KVMState *s, int smp_cpus) |
124 | 05330448 | aliguori | { |
125 | 05330448 | aliguori | int ret;
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126 | 05330448 | aliguori | |
127 | 05330448 | aliguori | /* create vm86 tss. KVM uses vm86 mode to emulate 16-bit code
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128 | 05330448 | aliguori | * directly. In order to use vm86 mode, a TSS is needed. Since this
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129 | 05330448 | aliguori | * must be part of guest physical memory, we need to allocate it. Older
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130 | 05330448 | aliguori | * versions of KVM just assumed that it would be at the end of physical
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131 | 05330448 | aliguori | * memory but that doesn't work with more than 4GB of memory. We simply
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132 | 05330448 | aliguori | * refuse to work with those older versions of KVM. */
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133 | 984b5181 | aliguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_SET_TSS_ADDR); |
134 | 05330448 | aliguori | if (ret <= 0) { |
135 | 05330448 | aliguori | fprintf(stderr, "kvm does not support KVM_CAP_SET_TSS_ADDR\n");
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136 | 05330448 | aliguori | return ret;
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137 | 05330448 | aliguori | } |
138 | 05330448 | aliguori | |
139 | 05330448 | aliguori | /* this address is 3 pages before the bios, and the bios should present
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140 | 05330448 | aliguori | * as unavaible memory. FIXME, need to ensure the e820 map deals with
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141 | 05330448 | aliguori | * this?
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142 | 05330448 | aliguori | */
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143 | 984b5181 | aliguori | return kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000); |
144 | 05330448 | aliguori | } |
145 | 05330448 | aliguori | |
146 | 05330448 | aliguori | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
147 | 05330448 | aliguori | { |
148 | 05330448 | aliguori | lhs->selector = rhs->selector; |
149 | 05330448 | aliguori | lhs->base = rhs->base; |
150 | 05330448 | aliguori | lhs->limit = rhs->limit; |
151 | 05330448 | aliguori | lhs->type = 3;
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152 | 05330448 | aliguori | lhs->present = 1;
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153 | 05330448 | aliguori | lhs->dpl = 3;
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154 | 05330448 | aliguori | lhs->db = 0;
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155 | 05330448 | aliguori | lhs->s = 1;
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156 | 05330448 | aliguori | lhs->l = 0;
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157 | 05330448 | aliguori | lhs->g = 0;
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158 | 05330448 | aliguori | lhs->avl = 0;
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159 | 05330448 | aliguori | lhs->unusable = 0;
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160 | 05330448 | aliguori | } |
161 | 05330448 | aliguori | |
162 | 05330448 | aliguori | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
163 | 05330448 | aliguori | { |
164 | 05330448 | aliguori | unsigned flags = rhs->flags;
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165 | 05330448 | aliguori | lhs->selector = rhs->selector; |
166 | 05330448 | aliguori | lhs->base = rhs->base; |
167 | 05330448 | aliguori | lhs->limit = rhs->limit; |
168 | 05330448 | aliguori | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
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169 | 05330448 | aliguori | lhs->present = (flags & DESC_P_MASK) != 0;
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170 | 05330448 | aliguori | lhs->dpl = rhs->selector & 3;
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171 | 05330448 | aliguori | lhs->db = (flags >> DESC_B_SHIFT) & 1;
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172 | 05330448 | aliguori | lhs->s = (flags & DESC_S_MASK) != 0;
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173 | 05330448 | aliguori | lhs->l = (flags >> DESC_L_SHIFT) & 1;
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174 | 05330448 | aliguori | lhs->g = (flags & DESC_G_MASK) != 0;
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175 | 05330448 | aliguori | lhs->avl = (flags & DESC_AVL_MASK) != 0;
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176 | 05330448 | aliguori | lhs->unusable = 0;
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177 | 05330448 | aliguori | } |
178 | 05330448 | aliguori | |
179 | 05330448 | aliguori | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) |
180 | 05330448 | aliguori | { |
181 | 05330448 | aliguori | lhs->selector = rhs->selector; |
182 | 05330448 | aliguori | lhs->base = rhs->base; |
183 | 05330448 | aliguori | lhs->limit = rhs->limit; |
184 | 05330448 | aliguori | lhs->flags = |
185 | 05330448 | aliguori | (rhs->type << DESC_TYPE_SHIFT) |
186 | 05330448 | aliguori | | (rhs->present * DESC_P_MASK) |
187 | 05330448 | aliguori | | (rhs->dpl << DESC_DPL_SHIFT) |
188 | 05330448 | aliguori | | (rhs->db << DESC_B_SHIFT) |
189 | 05330448 | aliguori | | (rhs->s * DESC_S_MASK) |
190 | 05330448 | aliguori | | (rhs->l << DESC_L_SHIFT) |
191 | 05330448 | aliguori | | (rhs->g * DESC_G_MASK) |
192 | 05330448 | aliguori | | (rhs->avl * DESC_AVL_MASK); |
193 | 05330448 | aliguori | } |
194 | 05330448 | aliguori | |
195 | 05330448 | aliguori | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) |
196 | 05330448 | aliguori | { |
197 | 05330448 | aliguori | if (set)
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198 | 05330448 | aliguori | *kvm_reg = *qemu_reg; |
199 | 05330448 | aliguori | else
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200 | 05330448 | aliguori | *qemu_reg = *kvm_reg; |
201 | 05330448 | aliguori | } |
202 | 05330448 | aliguori | |
203 | 05330448 | aliguori | static int kvm_getput_regs(CPUState *env, int set) |
204 | 05330448 | aliguori | { |
205 | 05330448 | aliguori | struct kvm_regs regs;
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206 | 05330448 | aliguori | int ret = 0; |
207 | 05330448 | aliguori | |
208 | 05330448 | aliguori | if (!set) {
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209 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
210 | 05330448 | aliguori | if (ret < 0) |
211 | 05330448 | aliguori | return ret;
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212 | 05330448 | aliguori | } |
213 | 05330448 | aliguori | |
214 | 05330448 | aliguori | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); |
215 | 05330448 | aliguori | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); |
216 | 05330448 | aliguori | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); |
217 | 05330448 | aliguori | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); |
218 | 05330448 | aliguori | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); |
219 | 05330448 | aliguori | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); |
220 | 05330448 | aliguori | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); |
221 | 05330448 | aliguori | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); |
222 | 05330448 | aliguori | #ifdef TARGET_X86_64
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223 | 05330448 | aliguori | kvm_getput_reg(®s.r8, &env->regs[8], set);
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224 | 05330448 | aliguori | kvm_getput_reg(®s.r9, &env->regs[9], set);
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225 | 05330448 | aliguori | kvm_getput_reg(®s.r10, &env->regs[10], set);
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226 | 05330448 | aliguori | kvm_getput_reg(®s.r11, &env->regs[11], set);
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227 | 05330448 | aliguori | kvm_getput_reg(®s.r12, &env->regs[12], set);
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228 | 05330448 | aliguori | kvm_getput_reg(®s.r13, &env->regs[13], set);
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229 | 05330448 | aliguori | kvm_getput_reg(®s.r14, &env->regs[14], set);
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230 | 05330448 | aliguori | kvm_getput_reg(®s.r15, &env->regs[15], set);
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231 | 05330448 | aliguori | #endif
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232 | 05330448 | aliguori | |
233 | 05330448 | aliguori | kvm_getput_reg(®s.rflags, &env->eflags, set); |
234 | 05330448 | aliguori | kvm_getput_reg(®s.rip, &env->eip, set); |
235 | 05330448 | aliguori | |
236 | 05330448 | aliguori | if (set)
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237 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
238 | 05330448 | aliguori | |
239 | 05330448 | aliguori | return ret;
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240 | 05330448 | aliguori | } |
241 | 05330448 | aliguori | |
242 | 05330448 | aliguori | static int kvm_put_fpu(CPUState *env) |
243 | 05330448 | aliguori | { |
244 | 05330448 | aliguori | struct kvm_fpu fpu;
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245 | 05330448 | aliguori | int i;
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246 | 05330448 | aliguori | |
247 | 05330448 | aliguori | memset(&fpu, 0, sizeof fpu); |
248 | 05330448 | aliguori | fpu.fsw = env->fpus & ~(7 << 11); |
249 | 05330448 | aliguori | fpu.fsw |= (env->fpstt & 7) << 11; |
250 | 05330448 | aliguori | fpu.fcw = env->fpuc; |
251 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
252 | 05330448 | aliguori | fpu.ftwx |= (!env->fptags[i]) << i; |
253 | 05330448 | aliguori | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs);
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254 | 05330448 | aliguori | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs);
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255 | 05330448 | aliguori | fpu.mxcsr = env->mxcsr; |
256 | 05330448 | aliguori | |
257 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
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258 | 05330448 | aliguori | } |
259 | 05330448 | aliguori | |
260 | 05330448 | aliguori | static int kvm_put_sregs(CPUState *env) |
261 | 05330448 | aliguori | { |
262 | 05330448 | aliguori | struct kvm_sregs sregs;
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263 | 05330448 | aliguori | |
264 | 05330448 | aliguori | memcpy(sregs.interrupt_bitmap, |
265 | 05330448 | aliguori | env->interrupt_bitmap, |
266 | 05330448 | aliguori | sizeof(sregs.interrupt_bitmap));
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267 | 05330448 | aliguori | |
268 | 05330448 | aliguori | if ((env->eflags & VM_MASK)) {
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269 | 05330448 | aliguori | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
270 | 05330448 | aliguori | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); |
271 | 05330448 | aliguori | set_v8086_seg(&sregs.es, &env->segs[R_ES]); |
272 | 05330448 | aliguori | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); |
273 | 05330448 | aliguori | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); |
274 | 05330448 | aliguori | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); |
275 | 05330448 | aliguori | } else {
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276 | 05330448 | aliguori | set_seg(&sregs.cs, &env->segs[R_CS]); |
277 | 05330448 | aliguori | set_seg(&sregs.ds, &env->segs[R_DS]); |
278 | 05330448 | aliguori | set_seg(&sregs.es, &env->segs[R_ES]); |
279 | 05330448 | aliguori | set_seg(&sregs.fs, &env->segs[R_FS]); |
280 | 05330448 | aliguori | set_seg(&sregs.gs, &env->segs[R_GS]); |
281 | 05330448 | aliguori | set_seg(&sregs.ss, &env->segs[R_SS]); |
282 | 05330448 | aliguori | |
283 | 05330448 | aliguori | if (env->cr[0] & CR0_PE_MASK) { |
284 | 05330448 | aliguori | /* force ss cpl to cs cpl */
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285 | 05330448 | aliguori | sregs.ss.selector = (sregs.ss.selector & ~3) |
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286 | 05330448 | aliguori | (sregs.cs.selector & 3);
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287 | 05330448 | aliguori | sregs.ss.dpl = sregs.ss.selector & 3;
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288 | 05330448 | aliguori | } |
289 | 05330448 | aliguori | } |
290 | 05330448 | aliguori | |
291 | 05330448 | aliguori | set_seg(&sregs.tr, &env->tr); |
292 | 05330448 | aliguori | set_seg(&sregs.ldt, &env->ldt); |
293 | 05330448 | aliguori | |
294 | 05330448 | aliguori | sregs.idt.limit = env->idt.limit; |
295 | 05330448 | aliguori | sregs.idt.base = env->idt.base; |
296 | 05330448 | aliguori | sregs.gdt.limit = env->gdt.limit; |
297 | 05330448 | aliguori | sregs.gdt.base = env->gdt.base; |
298 | 05330448 | aliguori | |
299 | 05330448 | aliguori | sregs.cr0 = env->cr[0];
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300 | 05330448 | aliguori | sregs.cr2 = env->cr[2];
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301 | 05330448 | aliguori | sregs.cr3 = env->cr[3];
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302 | 05330448 | aliguori | sregs.cr4 = env->cr[4];
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303 | 05330448 | aliguori | |
304 | 05330448 | aliguori | sregs.cr8 = cpu_get_apic_tpr(env); |
305 | 05330448 | aliguori | sregs.apic_base = cpu_get_apic_base(env); |
306 | 05330448 | aliguori | |
307 | 05330448 | aliguori | sregs.efer = env->efer; |
308 | 05330448 | aliguori | |
309 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
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310 | 05330448 | aliguori | } |
311 | 05330448 | aliguori | |
312 | 05330448 | aliguori | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, |
313 | 05330448 | aliguori | uint32_t index, uint64_t value) |
314 | 05330448 | aliguori | { |
315 | 05330448 | aliguori | entry->index = index; |
316 | 05330448 | aliguori | entry->data = value; |
317 | 05330448 | aliguori | } |
318 | 05330448 | aliguori | |
319 | 05330448 | aliguori | static int kvm_put_msrs(CPUState *env) |
320 | 05330448 | aliguori | { |
321 | 05330448 | aliguori | struct {
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322 | 05330448 | aliguori | struct kvm_msrs info;
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323 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
324 | 05330448 | aliguori | } msr_data; |
325 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
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326 | 05330448 | aliguori | int n = 0; |
327 | 05330448 | aliguori | |
328 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); |
329 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); |
330 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); |
331 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
332 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
333 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); |
334 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
335 | 05330448 | aliguori | /* FIXME if lm capable */
|
336 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); |
337 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); |
338 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); |
339 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); |
340 | 05330448 | aliguori | #endif
|
341 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
342 | 05330448 | aliguori | |
343 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data);
|
344 | 05330448 | aliguori | |
345 | 05330448 | aliguori | } |
346 | 05330448 | aliguori | |
347 | 05330448 | aliguori | |
348 | 05330448 | aliguori | static int kvm_get_fpu(CPUState *env) |
349 | 05330448 | aliguori | { |
350 | 05330448 | aliguori | struct kvm_fpu fpu;
|
351 | 05330448 | aliguori | int i, ret;
|
352 | 05330448 | aliguori | |
353 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); |
354 | 05330448 | aliguori | if (ret < 0) |
355 | 05330448 | aliguori | return ret;
|
356 | 05330448 | aliguori | |
357 | 05330448 | aliguori | env->fpstt = (fpu.fsw >> 11) & 7; |
358 | 05330448 | aliguori | env->fpus = fpu.fsw; |
359 | 05330448 | aliguori | env->fpuc = fpu.fcw; |
360 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
361 | 05330448 | aliguori | env->fptags[i] = !((fpu.ftwx >> i) & 1);
|
362 | 05330448 | aliguori | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs);
|
363 | 05330448 | aliguori | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs);
|
364 | 05330448 | aliguori | env->mxcsr = fpu.mxcsr; |
365 | 05330448 | aliguori | |
366 | 05330448 | aliguori | return 0; |
367 | 05330448 | aliguori | } |
368 | 05330448 | aliguori | |
369 | 05330448 | aliguori | static int kvm_get_sregs(CPUState *env) |
370 | 05330448 | aliguori | { |
371 | 05330448 | aliguori | struct kvm_sregs sregs;
|
372 | 05330448 | aliguori | uint32_t hflags; |
373 | 05330448 | aliguori | int ret;
|
374 | 05330448 | aliguori | |
375 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
376 | 05330448 | aliguori | if (ret < 0) |
377 | 05330448 | aliguori | return ret;
|
378 | 05330448 | aliguori | |
379 | 05330448 | aliguori | memcpy(env->interrupt_bitmap, |
380 | 05330448 | aliguori | sregs.interrupt_bitmap, |
381 | 05330448 | aliguori | sizeof(sregs.interrupt_bitmap));
|
382 | 05330448 | aliguori | |
383 | 05330448 | aliguori | get_seg(&env->segs[R_CS], &sregs.cs); |
384 | 05330448 | aliguori | get_seg(&env->segs[R_DS], &sregs.ds); |
385 | 05330448 | aliguori | get_seg(&env->segs[R_ES], &sregs.es); |
386 | 05330448 | aliguori | get_seg(&env->segs[R_FS], &sregs.fs); |
387 | 05330448 | aliguori | get_seg(&env->segs[R_GS], &sregs.gs); |
388 | 05330448 | aliguori | get_seg(&env->segs[R_SS], &sregs.ss); |
389 | 05330448 | aliguori | |
390 | 05330448 | aliguori | get_seg(&env->tr, &sregs.tr); |
391 | 05330448 | aliguori | get_seg(&env->ldt, &sregs.ldt); |
392 | 05330448 | aliguori | |
393 | 05330448 | aliguori | env->idt.limit = sregs.idt.limit; |
394 | 05330448 | aliguori | env->idt.base = sregs.idt.base; |
395 | 05330448 | aliguori | env->gdt.limit = sregs.gdt.limit; |
396 | 05330448 | aliguori | env->gdt.base = sregs.gdt.base; |
397 | 05330448 | aliguori | |
398 | 05330448 | aliguori | env->cr[0] = sregs.cr0;
|
399 | 05330448 | aliguori | env->cr[2] = sregs.cr2;
|
400 | 05330448 | aliguori | env->cr[3] = sregs.cr3;
|
401 | 05330448 | aliguori | env->cr[4] = sregs.cr4;
|
402 | 05330448 | aliguori | |
403 | 05330448 | aliguori | cpu_set_apic_base(env, sregs.apic_base); |
404 | 05330448 | aliguori | |
405 | 05330448 | aliguori | env->efer = sregs.efer; |
406 | 05330448 | aliguori | //cpu_set_apic_tpr(env, sregs.cr8);
|
407 | 05330448 | aliguori | |
408 | 05330448 | aliguori | #define HFLAG_COPY_MASK ~( \
|
409 | 05330448 | aliguori | HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ |
410 | 05330448 | aliguori | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ |
411 | 05330448 | aliguori | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ |
412 | 05330448 | aliguori | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) |
413 | 05330448 | aliguori | |
414 | 05330448 | aliguori | |
415 | 05330448 | aliguori | |
416 | 05330448 | aliguori | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; |
417 | 05330448 | aliguori | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT);
|
418 | 05330448 | aliguori | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) &
|
419 | 05330448 | aliguori | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
420 | 05330448 | aliguori | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
421 | 05330448 | aliguori | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) <<
|
422 | 05330448 | aliguori | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
423 | 05330448 | aliguori | |
424 | 05330448 | aliguori | if (env->efer & MSR_EFER_LMA) {
|
425 | 05330448 | aliguori | hflags |= HF_LMA_MASK; |
426 | 05330448 | aliguori | } |
427 | 05330448 | aliguori | |
428 | 05330448 | aliguori | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) {
|
429 | 05330448 | aliguori | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
430 | 05330448 | aliguori | } else {
|
431 | 05330448 | aliguori | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> |
432 | 05330448 | aliguori | (DESC_B_SHIFT - HF_CS32_SHIFT); |
433 | 05330448 | aliguori | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
434 | 05330448 | aliguori | (DESC_B_SHIFT - HF_SS32_SHIFT); |
435 | 05330448 | aliguori | if (!(env->cr[0] & CR0_PE_MASK) || |
436 | 05330448 | aliguori | (env->eflags & VM_MASK) || |
437 | 05330448 | aliguori | !(hflags & HF_CS32_MASK)) { |
438 | 05330448 | aliguori | hflags |= HF_ADDSEG_MASK; |
439 | 05330448 | aliguori | } else {
|
440 | 05330448 | aliguori | hflags |= ((env->segs[R_DS].base | |
441 | 05330448 | aliguori | env->segs[R_ES].base | |
442 | 05330448 | aliguori | env->segs[R_SS].base) != 0) <<
|
443 | 05330448 | aliguori | HF_ADDSEG_SHIFT; |
444 | 05330448 | aliguori | } |
445 | 05330448 | aliguori | } |
446 | 05330448 | aliguori | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; |
447 | 05330448 | aliguori | env->cc_src = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
448 | 05330448 | aliguori | env->df = 1 - (2 * ((env->eflags >> 10) & 1)); |
449 | 05330448 | aliguori | env->cc_op = CC_OP_EFLAGS; |
450 | 05330448 | aliguori | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
451 | 05330448 | aliguori | |
452 | 05330448 | aliguori | return 0; |
453 | 05330448 | aliguori | } |
454 | 05330448 | aliguori | |
455 | 05330448 | aliguori | static int kvm_get_msrs(CPUState *env) |
456 | 05330448 | aliguori | { |
457 | 05330448 | aliguori | struct {
|
458 | 05330448 | aliguori | struct kvm_msrs info;
|
459 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
460 | 05330448 | aliguori | } msr_data; |
461 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
462 | 05330448 | aliguori | int ret, i, n;
|
463 | 05330448 | aliguori | |
464 | 05330448 | aliguori | n = 0;
|
465 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_CS; |
466 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_ESP; |
467 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_EIP; |
468 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
469 | 05330448 | aliguori | msrs[n++].index = MSR_STAR; |
470 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_TSC; |
471 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
472 | 05330448 | aliguori | /* FIXME lm_capable_kernel */
|
473 | 05330448 | aliguori | msrs[n++].index = MSR_CSTAR; |
474 | 05330448 | aliguori | msrs[n++].index = MSR_KERNELGSBASE; |
475 | 05330448 | aliguori | msrs[n++].index = MSR_FMASK; |
476 | 05330448 | aliguori | msrs[n++].index = MSR_LSTAR; |
477 | 05330448 | aliguori | #endif
|
478 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
479 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); |
480 | 05330448 | aliguori | if (ret < 0) |
481 | 05330448 | aliguori | return ret;
|
482 | 05330448 | aliguori | |
483 | 05330448 | aliguori | for (i = 0; i < ret; i++) { |
484 | 05330448 | aliguori | switch (msrs[i].index) {
|
485 | 05330448 | aliguori | case MSR_IA32_SYSENTER_CS:
|
486 | 05330448 | aliguori | env->sysenter_cs = msrs[i].data; |
487 | 05330448 | aliguori | break;
|
488 | 05330448 | aliguori | case MSR_IA32_SYSENTER_ESP:
|
489 | 05330448 | aliguori | env->sysenter_esp = msrs[i].data; |
490 | 05330448 | aliguori | break;
|
491 | 05330448 | aliguori | case MSR_IA32_SYSENTER_EIP:
|
492 | 05330448 | aliguori | env->sysenter_eip = msrs[i].data; |
493 | 05330448 | aliguori | break;
|
494 | 05330448 | aliguori | case MSR_STAR:
|
495 | 05330448 | aliguori | env->star = msrs[i].data; |
496 | 05330448 | aliguori | break;
|
497 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
498 | 05330448 | aliguori | case MSR_CSTAR:
|
499 | 05330448 | aliguori | env->cstar = msrs[i].data; |
500 | 05330448 | aliguori | break;
|
501 | 05330448 | aliguori | case MSR_KERNELGSBASE:
|
502 | 05330448 | aliguori | env->kernelgsbase = msrs[i].data; |
503 | 05330448 | aliguori | break;
|
504 | 05330448 | aliguori | case MSR_FMASK:
|
505 | 05330448 | aliguori | env->fmask = msrs[i].data; |
506 | 05330448 | aliguori | break;
|
507 | 05330448 | aliguori | case MSR_LSTAR:
|
508 | 05330448 | aliguori | env->lstar = msrs[i].data; |
509 | 05330448 | aliguori | break;
|
510 | 05330448 | aliguori | #endif
|
511 | 05330448 | aliguori | case MSR_IA32_TSC:
|
512 | 05330448 | aliguori | env->tsc = msrs[i].data; |
513 | 05330448 | aliguori | break;
|
514 | 05330448 | aliguori | } |
515 | 05330448 | aliguori | } |
516 | 05330448 | aliguori | |
517 | 05330448 | aliguori | return 0; |
518 | 05330448 | aliguori | } |
519 | 05330448 | aliguori | |
520 | 05330448 | aliguori | int kvm_arch_put_registers(CPUState *env)
|
521 | 05330448 | aliguori | { |
522 | 05330448 | aliguori | int ret;
|
523 | 05330448 | aliguori | |
524 | 05330448 | aliguori | ret = kvm_getput_regs(env, 1);
|
525 | 05330448 | aliguori | if (ret < 0) |
526 | 05330448 | aliguori | return ret;
|
527 | 05330448 | aliguori | |
528 | 05330448 | aliguori | ret = kvm_put_fpu(env); |
529 | 05330448 | aliguori | if (ret < 0) |
530 | 05330448 | aliguori | return ret;
|
531 | 05330448 | aliguori | |
532 | 05330448 | aliguori | ret = kvm_put_sregs(env); |
533 | 05330448 | aliguori | if (ret < 0) |
534 | 05330448 | aliguori | return ret;
|
535 | 05330448 | aliguori | |
536 | 05330448 | aliguori | ret = kvm_put_msrs(env); |
537 | 05330448 | aliguori | if (ret < 0) |
538 | 05330448 | aliguori | return ret;
|
539 | 05330448 | aliguori | |
540 | 05330448 | aliguori | return 0; |
541 | 05330448 | aliguori | } |
542 | 05330448 | aliguori | |
543 | 05330448 | aliguori | int kvm_arch_get_registers(CPUState *env)
|
544 | 05330448 | aliguori | { |
545 | 05330448 | aliguori | int ret;
|
546 | 05330448 | aliguori | |
547 | 05330448 | aliguori | ret = kvm_getput_regs(env, 0);
|
548 | 05330448 | aliguori | if (ret < 0) |
549 | 05330448 | aliguori | return ret;
|
550 | 05330448 | aliguori | |
551 | 05330448 | aliguori | ret = kvm_get_fpu(env); |
552 | 05330448 | aliguori | if (ret < 0) |
553 | 05330448 | aliguori | return ret;
|
554 | 05330448 | aliguori | |
555 | 05330448 | aliguori | ret = kvm_get_sregs(env); |
556 | 05330448 | aliguori | if (ret < 0) |
557 | 05330448 | aliguori | return ret;
|
558 | 05330448 | aliguori | |
559 | 05330448 | aliguori | ret = kvm_get_msrs(env); |
560 | 05330448 | aliguori | if (ret < 0) |
561 | 05330448 | aliguori | return ret;
|
562 | 05330448 | aliguori | |
563 | 05330448 | aliguori | return 0; |
564 | 05330448 | aliguori | } |
565 | 05330448 | aliguori | |
566 | 05330448 | aliguori | int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) |
567 | 05330448 | aliguori | { |
568 | 05330448 | aliguori | /* Try to inject an interrupt if the guest can accept it */
|
569 | 05330448 | aliguori | if (run->ready_for_interrupt_injection &&
|
570 | 05330448 | aliguori | (env->interrupt_request & CPU_INTERRUPT_HARD) && |
571 | 05330448 | aliguori | (env->eflags & IF_MASK)) { |
572 | 05330448 | aliguori | int irq;
|
573 | 05330448 | aliguori | |
574 | 05330448 | aliguori | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
575 | 05330448 | aliguori | irq = cpu_get_pic_interrupt(env); |
576 | 05330448 | aliguori | if (irq >= 0) { |
577 | 05330448 | aliguori | struct kvm_interrupt intr;
|
578 | 05330448 | aliguori | intr.irq = irq; |
579 | 05330448 | aliguori | /* FIXME: errors */
|
580 | 05330448 | aliguori | dprintf("injected interrupt %d\n", irq);
|
581 | 05330448 | aliguori | kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
582 | 05330448 | aliguori | } |
583 | 05330448 | aliguori | } |
584 | 05330448 | aliguori | |
585 | 05330448 | aliguori | /* If we have an interrupt but the guest is not ready to receive an
|
586 | 05330448 | aliguori | * interrupt, request an interrupt window exit. This will
|
587 | 05330448 | aliguori | * cause a return to userspace as soon as the guest is ready to
|
588 | 05330448 | aliguori | * receive interrupts. */
|
589 | 05330448 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_HARD))
|
590 | 05330448 | aliguori | run->request_interrupt_window = 1;
|
591 | 05330448 | aliguori | else
|
592 | 05330448 | aliguori | run->request_interrupt_window = 0;
|
593 | 05330448 | aliguori | |
594 | 05330448 | aliguori | dprintf("setting tpr\n");
|
595 | 05330448 | aliguori | run->cr8 = cpu_get_apic_tpr(env); |
596 | 05330448 | aliguori | |
597 | 05330448 | aliguori | return 0; |
598 | 05330448 | aliguori | } |
599 | 05330448 | aliguori | |
600 | 05330448 | aliguori | int kvm_arch_post_run(CPUState *env, struct kvm_run *run) |
601 | 05330448 | aliguori | { |
602 | 05330448 | aliguori | if (run->if_flag)
|
603 | 05330448 | aliguori | env->eflags |= IF_MASK; |
604 | 05330448 | aliguori | else
|
605 | 05330448 | aliguori | env->eflags &= ~IF_MASK; |
606 | 05330448 | aliguori | |
607 | 05330448 | aliguori | cpu_set_apic_tpr(env, run->cr8); |
608 | 05330448 | aliguori | cpu_set_apic_base(env, run->apic_base); |
609 | 05330448 | aliguori | |
610 | 05330448 | aliguori | return 0; |
611 | 05330448 | aliguori | } |
612 | 05330448 | aliguori | |
613 | 05330448 | aliguori | static int kvm_handle_halt(CPUState *env) |
614 | 05330448 | aliguori | { |
615 | 05330448 | aliguori | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
616 | 05330448 | aliguori | (env->eflags & IF_MASK)) && |
617 | 05330448 | aliguori | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { |
618 | 05330448 | aliguori | env->halted = 1;
|
619 | 05330448 | aliguori | env->exception_index = EXCP_HLT; |
620 | 05330448 | aliguori | return 0; |
621 | 05330448 | aliguori | } |
622 | 05330448 | aliguori | |
623 | 05330448 | aliguori | return 1; |
624 | 05330448 | aliguori | } |
625 | 05330448 | aliguori | |
626 | 05330448 | aliguori | int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) |
627 | 05330448 | aliguori | { |
628 | 05330448 | aliguori | int ret = 0; |
629 | 05330448 | aliguori | |
630 | 05330448 | aliguori | switch (run->exit_reason) {
|
631 | 05330448 | aliguori | case KVM_EXIT_HLT:
|
632 | 05330448 | aliguori | dprintf("handle_hlt\n");
|
633 | 05330448 | aliguori | ret = kvm_handle_halt(env); |
634 | 05330448 | aliguori | break;
|
635 | 05330448 | aliguori | } |
636 | 05330448 | aliguori | |
637 | 05330448 | aliguori | return ret;
|
638 | 05330448 | aliguori | } |