root / target-i386 / kvm.c @ a36b1029
History | View | Annotate | Download (18.2 kB)
1 | 05330448 | aliguori | /*
|
---|---|---|---|
2 | 05330448 | aliguori | * QEMU KVM support
|
3 | 05330448 | aliguori | *
|
4 | 05330448 | aliguori | * Copyright (C) 2006-2008 Qumranet Technologies
|
5 | 05330448 | aliguori | * Copyright IBM, Corp. 2008
|
6 | 05330448 | aliguori | *
|
7 | 05330448 | aliguori | * Authors:
|
8 | 05330448 | aliguori | * Anthony Liguori <aliguori@us.ibm.com>
|
9 | 05330448 | aliguori | *
|
10 | 05330448 | aliguori | * This work is licensed under the terms of the GNU GPL, version 2 or later.
|
11 | 05330448 | aliguori | * See the COPYING file in the top-level directory.
|
12 | 05330448 | aliguori | *
|
13 | 05330448 | aliguori | */
|
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
|
27 | 05330448 | aliguori | |
28 | 05330448 | aliguori | #ifdef DEBUG_KVM
|
29 | 05330448 | aliguori | #define dprintf(fmt, ...) \
|
30 | 05330448 | aliguori | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
31 | 05330448 | aliguori | #else
|
32 | 05330448 | aliguori | #define dprintf(fmt, ...) \
|
33 | 05330448 | aliguori | do { } while (0) |
34 | 05330448 | aliguori | #endif
|
35 | 05330448 | aliguori | |
36 | 05330448 | aliguori | int kvm_arch_init_vcpu(CPUState *env)
|
37 | 05330448 | aliguori | { |
38 | 05330448 | aliguori | struct {
|
39 | 486bd5a2 | aliguori | struct kvm_cpuid2 cpuid;
|
40 | 486bd5a2 | aliguori | struct kvm_cpuid_entry2 entries[100]; |
41 | 05330448 | aliguori | } __attribute__((packed)) cpuid_data; |
42 | 486bd5a2 | aliguori | uint32_t limit, i, j, cpuid_i; |
43 | 05330448 | aliguori | uint32_t eax, ebx, ecx, edx; |
44 | 05330448 | aliguori | |
45 | 05330448 | aliguori | cpuid_i = 0;
|
46 | 05330448 | aliguori | |
47 | e00b6f80 | aliguori | cpu_x86_cpuid(env, 0, 0, &eax, &ebx, &ecx, &edx); |
48 | 05330448 | aliguori | limit = eax; |
49 | 05330448 | aliguori | |
50 | 05330448 | aliguori | for (i = 0; i <= limit; i++) { |
51 | 486bd5a2 | aliguori | struct kvm_cpuid_entry2 *c = &cpuid_data.entries[cpuid_i++];
|
52 | 486bd5a2 | aliguori | |
53 | 486bd5a2 | aliguori | switch (i) {
|
54 | a36b1029 | aliguori | case 2: { |
55 | a36b1029 | aliguori | /* Keep reading function 2 till all the input is received */
|
56 | a36b1029 | aliguori | int times;
|
57 | a36b1029 | aliguori | |
58 | a36b1029 | aliguori | cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx);
|
59 | a36b1029 | aliguori | times = eax & 0xff;
|
60 | a36b1029 | aliguori | |
61 | a36b1029 | aliguori | c->function = i; |
62 | a36b1029 | aliguori | c->flags |= KVM_CPUID_FLAG_STATEFUL_FUNC; |
63 | a36b1029 | aliguori | c->flags |= KVM_CPUID_FLAG_STATE_READ_NEXT; |
64 | a36b1029 | aliguori | c->eax = eax; |
65 | a36b1029 | aliguori | c->ebx = ebx; |
66 | a36b1029 | aliguori | c->ecx = ecx; |
67 | a36b1029 | aliguori | c->edx = edx; |
68 | a36b1029 | aliguori | |
69 | a36b1029 | aliguori | for (j = 1; j < times; ++j) { |
70 | a36b1029 | aliguori | cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx);
|
71 | a36b1029 | aliguori | c->function = i; |
72 | a36b1029 | aliguori | c->flags |= KVM_CPUID_FLAG_STATEFUL_FUNC; |
73 | a36b1029 | aliguori | c->eax = eax; |
74 | a36b1029 | aliguori | c->ebx = ebx; |
75 | a36b1029 | aliguori | c->ecx = ecx; |
76 | a36b1029 | aliguori | c->edx = edx; |
77 | a36b1029 | aliguori | } |
78 | a36b1029 | aliguori | break;
|
79 | a36b1029 | aliguori | } |
80 | 486bd5a2 | aliguori | case 4: |
81 | 486bd5a2 | aliguori | case 0xb: |
82 | 486bd5a2 | aliguori | case 0xd: |
83 | 486bd5a2 | aliguori | for (j = 0; ; j++) { |
84 | 486bd5a2 | aliguori | cpu_x86_cpuid(env, i, j, &eax, &ebx, &ecx, &edx); |
85 | 486bd5a2 | aliguori | c->function = i; |
86 | 486bd5a2 | aliguori | c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; |
87 | 486bd5a2 | aliguori | c->index = j; |
88 | 486bd5a2 | aliguori | c->eax = eax; |
89 | 486bd5a2 | aliguori | c->ebx = ebx; |
90 | 486bd5a2 | aliguori | c->ecx = ecx; |
91 | 486bd5a2 | aliguori | c->edx = edx; |
92 | 486bd5a2 | aliguori | c = &cpuid_data.entries[++cpuid_i]; |
93 | 486bd5a2 | aliguori | |
94 | 486bd5a2 | aliguori | if (i == 4 && eax == 0) |
95 | 486bd5a2 | aliguori | break;
|
96 | 486bd5a2 | aliguori | if (i == 0xb && !(ecx & 0xff00)) |
97 | 486bd5a2 | aliguori | break;
|
98 | 486bd5a2 | aliguori | if (i == 0xd && eax == 0) |
99 | 486bd5a2 | aliguori | break;
|
100 | 486bd5a2 | aliguori | } |
101 | 486bd5a2 | aliguori | break;
|
102 | 486bd5a2 | aliguori | default:
|
103 | 486bd5a2 | aliguori | cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx);
|
104 | 486bd5a2 | aliguori | c->function = i; |
105 | 486bd5a2 | aliguori | c->eax = eax; |
106 | 486bd5a2 | aliguori | c->ebx = ebx; |
107 | 486bd5a2 | aliguori | c->ecx = ecx; |
108 | 486bd5a2 | aliguori | c->edx = edx; |
109 | 486bd5a2 | aliguori | break;
|
110 | 486bd5a2 | aliguori | } |
111 | 05330448 | aliguori | } |
112 | e00b6f80 | aliguori | cpu_x86_cpuid(env, 0x80000000, 0, &eax, &ebx, &ecx, &edx); |
113 | 05330448 | aliguori | limit = eax; |
114 | 05330448 | aliguori | |
115 | 05330448 | aliguori | for (i = 0x80000000; i <= limit; i++) { |
116 | 486bd5a2 | aliguori | struct kvm_cpuid_entry2 *c = &cpuid_data.entries[cpuid_i++];
|
117 | 05330448 | aliguori | |
118 | e00b6f80 | aliguori | cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx);
|
119 | 05330448 | aliguori | c->function = i; |
120 | 05330448 | aliguori | c->eax = eax; |
121 | 05330448 | aliguori | c->ebx = ebx; |
122 | 05330448 | aliguori | c->ecx = ecx; |
123 | 05330448 | aliguori | c->edx = edx; |
124 | 05330448 | aliguori | } |
125 | 05330448 | aliguori | |
126 | 05330448 | aliguori | cpuid_data.cpuid.nent = cpuid_i; |
127 | 05330448 | aliguori | |
128 | 486bd5a2 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data);
|
129 | 05330448 | aliguori | } |
130 | 05330448 | aliguori | |
131 | 05330448 | aliguori | static int kvm_has_msr_star(CPUState *env) |
132 | 05330448 | aliguori | { |
133 | 05330448 | aliguori | static int has_msr_star; |
134 | 05330448 | aliguori | int ret;
|
135 | 05330448 | aliguori | |
136 | 05330448 | aliguori | /* first time */
|
137 | 05330448 | aliguori | if (has_msr_star == 0) { |
138 | 05330448 | aliguori | struct kvm_msr_list msr_list, *kvm_msr_list;
|
139 | 05330448 | aliguori | |
140 | 05330448 | aliguori | has_msr_star = -1;
|
141 | 05330448 | aliguori | |
142 | 05330448 | aliguori | /* Obtain MSR list from KVM. These are the MSRs that we must
|
143 | 05330448 | aliguori | * save/restore */
|
144 | 4c9f7372 | aliguori | msr_list.nmsrs = 0;
|
145 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, &msr_list); |
146 | 05330448 | aliguori | if (ret < 0) |
147 | 05330448 | aliguori | return 0; |
148 | 05330448 | aliguori | |
149 | 05330448 | aliguori | kvm_msr_list = qemu_mallocz(sizeof(msr_list) +
|
150 | 05330448 | aliguori | msr_list.nmsrs * sizeof(msr_list.indices[0])); |
151 | 05330448 | aliguori | |
152 | 55308450 | aliguori | kvm_msr_list->nmsrs = msr_list.nmsrs; |
153 | 05330448 | aliguori | ret = kvm_ioctl(env->kvm_state, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); |
154 | 05330448 | aliguori | if (ret >= 0) { |
155 | 05330448 | aliguori | int i;
|
156 | 05330448 | aliguori | |
157 | 05330448 | aliguori | for (i = 0; i < kvm_msr_list->nmsrs; i++) { |
158 | 05330448 | aliguori | if (kvm_msr_list->indices[i] == MSR_STAR) {
|
159 | 05330448 | aliguori | has_msr_star = 1;
|
160 | 05330448 | aliguori | break;
|
161 | 05330448 | aliguori | } |
162 | 05330448 | aliguori | } |
163 | 05330448 | aliguori | } |
164 | 05330448 | aliguori | |
165 | 05330448 | aliguori | free(kvm_msr_list); |
166 | 05330448 | aliguori | } |
167 | 05330448 | aliguori | |
168 | 05330448 | aliguori | if (has_msr_star == 1) |
169 | 05330448 | aliguori | return 1; |
170 | 05330448 | aliguori | return 0; |
171 | 05330448 | aliguori | } |
172 | 05330448 | aliguori | |
173 | 05330448 | aliguori | int kvm_arch_init(KVMState *s, int smp_cpus) |
174 | 05330448 | aliguori | { |
175 | 05330448 | aliguori | int ret;
|
176 | 05330448 | aliguori | |
177 | 05330448 | aliguori | /* create vm86 tss. KVM uses vm86 mode to emulate 16-bit code
|
178 | 05330448 | aliguori | * directly. In order to use vm86 mode, a TSS is needed. Since this
|
179 | 05330448 | aliguori | * must be part of guest physical memory, we need to allocate it. Older
|
180 | 05330448 | aliguori | * versions of KVM just assumed that it would be at the end of physical
|
181 | 05330448 | aliguori | * memory but that doesn't work with more than 4GB of memory. We simply
|
182 | 05330448 | aliguori | * refuse to work with those older versions of KVM. */
|
183 | 984b5181 | aliguori | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_SET_TSS_ADDR); |
184 | 05330448 | aliguori | if (ret <= 0) { |
185 | 05330448 | aliguori | fprintf(stderr, "kvm does not support KVM_CAP_SET_TSS_ADDR\n");
|
186 | 05330448 | aliguori | return ret;
|
187 | 05330448 | aliguori | } |
188 | 05330448 | aliguori | |
189 | 05330448 | aliguori | /* this address is 3 pages before the bios, and the bios should present
|
190 | 05330448 | aliguori | * as unavaible memory. FIXME, need to ensure the e820 map deals with
|
191 | 05330448 | aliguori | * this?
|
192 | 05330448 | aliguori | */
|
193 | 984b5181 | aliguori | return kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000); |
194 | 05330448 | aliguori | } |
195 | 05330448 | aliguori | |
196 | 05330448 | aliguori | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
197 | 05330448 | aliguori | { |
198 | 05330448 | aliguori | lhs->selector = rhs->selector; |
199 | 05330448 | aliguori | lhs->base = rhs->base; |
200 | 05330448 | aliguori | lhs->limit = rhs->limit; |
201 | 05330448 | aliguori | lhs->type = 3;
|
202 | 05330448 | aliguori | lhs->present = 1;
|
203 | 05330448 | aliguori | lhs->dpl = 3;
|
204 | 05330448 | aliguori | lhs->db = 0;
|
205 | 05330448 | aliguori | lhs->s = 1;
|
206 | 05330448 | aliguori | lhs->l = 0;
|
207 | 05330448 | aliguori | lhs->g = 0;
|
208 | 05330448 | aliguori | lhs->avl = 0;
|
209 | 05330448 | aliguori | lhs->unusable = 0;
|
210 | 05330448 | aliguori | } |
211 | 05330448 | aliguori | |
212 | 05330448 | aliguori | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
213 | 05330448 | aliguori | { |
214 | 05330448 | aliguori | unsigned flags = rhs->flags;
|
215 | 05330448 | aliguori | lhs->selector = rhs->selector; |
216 | 05330448 | aliguori | lhs->base = rhs->base; |
217 | 05330448 | aliguori | lhs->limit = rhs->limit; |
218 | 05330448 | aliguori | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
|
219 | 05330448 | aliguori | lhs->present = (flags & DESC_P_MASK) != 0;
|
220 | 05330448 | aliguori | lhs->dpl = rhs->selector & 3;
|
221 | 05330448 | aliguori | lhs->db = (flags >> DESC_B_SHIFT) & 1;
|
222 | 05330448 | aliguori | lhs->s = (flags & DESC_S_MASK) != 0;
|
223 | 05330448 | aliguori | lhs->l = (flags >> DESC_L_SHIFT) & 1;
|
224 | 05330448 | aliguori | lhs->g = (flags & DESC_G_MASK) != 0;
|
225 | 05330448 | aliguori | lhs->avl = (flags & DESC_AVL_MASK) != 0;
|
226 | 05330448 | aliguori | lhs->unusable = 0;
|
227 | 05330448 | aliguori | } |
228 | 05330448 | aliguori | |
229 | 05330448 | aliguori | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) |
230 | 05330448 | aliguori | { |
231 | 05330448 | aliguori | lhs->selector = rhs->selector; |
232 | 05330448 | aliguori | lhs->base = rhs->base; |
233 | 05330448 | aliguori | lhs->limit = rhs->limit; |
234 | 05330448 | aliguori | lhs->flags = |
235 | 05330448 | aliguori | (rhs->type << DESC_TYPE_SHIFT) |
236 | 05330448 | aliguori | | (rhs->present * DESC_P_MASK) |
237 | 05330448 | aliguori | | (rhs->dpl << DESC_DPL_SHIFT) |
238 | 05330448 | aliguori | | (rhs->db << DESC_B_SHIFT) |
239 | 05330448 | aliguori | | (rhs->s * DESC_S_MASK) |
240 | 05330448 | aliguori | | (rhs->l << DESC_L_SHIFT) |
241 | 05330448 | aliguori | | (rhs->g * DESC_G_MASK) |
242 | 05330448 | aliguori | | (rhs->avl * DESC_AVL_MASK); |
243 | 05330448 | aliguori | } |
244 | 05330448 | aliguori | |
245 | 05330448 | aliguori | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) |
246 | 05330448 | aliguori | { |
247 | 05330448 | aliguori | if (set)
|
248 | 05330448 | aliguori | *kvm_reg = *qemu_reg; |
249 | 05330448 | aliguori | else
|
250 | 05330448 | aliguori | *qemu_reg = *kvm_reg; |
251 | 05330448 | aliguori | } |
252 | 05330448 | aliguori | |
253 | 05330448 | aliguori | static int kvm_getput_regs(CPUState *env, int set) |
254 | 05330448 | aliguori | { |
255 | 05330448 | aliguori | struct kvm_regs regs;
|
256 | 05330448 | aliguori | int ret = 0; |
257 | 05330448 | aliguori | |
258 | 05330448 | aliguori | if (!set) {
|
259 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); |
260 | 05330448 | aliguori | if (ret < 0) |
261 | 05330448 | aliguori | return ret;
|
262 | 05330448 | aliguori | } |
263 | 05330448 | aliguori | |
264 | 05330448 | aliguori | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); |
265 | 05330448 | aliguori | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); |
266 | 05330448 | aliguori | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); |
267 | 05330448 | aliguori | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); |
268 | 05330448 | aliguori | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); |
269 | 05330448 | aliguori | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); |
270 | 05330448 | aliguori | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); |
271 | 05330448 | aliguori | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); |
272 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
273 | 05330448 | aliguori | kvm_getput_reg(®s.r8, &env->regs[8], set);
|
274 | 05330448 | aliguori | kvm_getput_reg(®s.r9, &env->regs[9], set);
|
275 | 05330448 | aliguori | kvm_getput_reg(®s.r10, &env->regs[10], set);
|
276 | 05330448 | aliguori | kvm_getput_reg(®s.r11, &env->regs[11], set);
|
277 | 05330448 | aliguori | kvm_getput_reg(®s.r12, &env->regs[12], set);
|
278 | 05330448 | aliguori | kvm_getput_reg(®s.r13, &env->regs[13], set);
|
279 | 05330448 | aliguori | kvm_getput_reg(®s.r14, &env->regs[14], set);
|
280 | 05330448 | aliguori | kvm_getput_reg(®s.r15, &env->regs[15], set);
|
281 | 05330448 | aliguori | #endif
|
282 | 05330448 | aliguori | |
283 | 05330448 | aliguori | kvm_getput_reg(®s.rflags, &env->eflags, set); |
284 | 05330448 | aliguori | kvm_getput_reg(®s.rip, &env->eip, set); |
285 | 05330448 | aliguori | |
286 | 05330448 | aliguori | if (set)
|
287 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
288 | 05330448 | aliguori | |
289 | 05330448 | aliguori | return ret;
|
290 | 05330448 | aliguori | } |
291 | 05330448 | aliguori | |
292 | 05330448 | aliguori | static int kvm_put_fpu(CPUState *env) |
293 | 05330448 | aliguori | { |
294 | 05330448 | aliguori | struct kvm_fpu fpu;
|
295 | 05330448 | aliguori | int i;
|
296 | 05330448 | aliguori | |
297 | 05330448 | aliguori | memset(&fpu, 0, sizeof fpu); |
298 | 05330448 | aliguori | fpu.fsw = env->fpus & ~(7 << 11); |
299 | 05330448 | aliguori | fpu.fsw |= (env->fpstt & 7) << 11; |
300 | 05330448 | aliguori | fpu.fcw = env->fpuc; |
301 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
302 | 05330448 | aliguori | fpu.ftwx |= (!env->fptags[i]) << i; |
303 | 05330448 | aliguori | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs);
|
304 | 05330448 | aliguori | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs);
|
305 | 05330448 | aliguori | fpu.mxcsr = env->mxcsr; |
306 | 05330448 | aliguori | |
307 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
|
308 | 05330448 | aliguori | } |
309 | 05330448 | aliguori | |
310 | 05330448 | aliguori | static int kvm_put_sregs(CPUState *env) |
311 | 05330448 | aliguori | { |
312 | 05330448 | aliguori | struct kvm_sregs sregs;
|
313 | 05330448 | aliguori | |
314 | 05330448 | aliguori | memcpy(sregs.interrupt_bitmap, |
315 | 05330448 | aliguori | env->interrupt_bitmap, |
316 | 05330448 | aliguori | sizeof(sregs.interrupt_bitmap));
|
317 | 05330448 | aliguori | |
318 | 05330448 | aliguori | if ((env->eflags & VM_MASK)) {
|
319 | 05330448 | aliguori | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
320 | 05330448 | aliguori | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); |
321 | 05330448 | aliguori | set_v8086_seg(&sregs.es, &env->segs[R_ES]); |
322 | 05330448 | aliguori | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); |
323 | 05330448 | aliguori | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); |
324 | 05330448 | aliguori | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); |
325 | 05330448 | aliguori | } else {
|
326 | 05330448 | aliguori | set_seg(&sregs.cs, &env->segs[R_CS]); |
327 | 05330448 | aliguori | set_seg(&sregs.ds, &env->segs[R_DS]); |
328 | 05330448 | aliguori | set_seg(&sregs.es, &env->segs[R_ES]); |
329 | 05330448 | aliguori | set_seg(&sregs.fs, &env->segs[R_FS]); |
330 | 05330448 | aliguori | set_seg(&sregs.gs, &env->segs[R_GS]); |
331 | 05330448 | aliguori | set_seg(&sregs.ss, &env->segs[R_SS]); |
332 | 05330448 | aliguori | |
333 | 05330448 | aliguori | if (env->cr[0] & CR0_PE_MASK) { |
334 | 05330448 | aliguori | /* force ss cpl to cs cpl */
|
335 | 05330448 | aliguori | sregs.ss.selector = (sregs.ss.selector & ~3) |
|
336 | 05330448 | aliguori | (sregs.cs.selector & 3);
|
337 | 05330448 | aliguori | sregs.ss.dpl = sregs.ss.selector & 3;
|
338 | 05330448 | aliguori | } |
339 | 05330448 | aliguori | } |
340 | 05330448 | aliguori | |
341 | 05330448 | aliguori | set_seg(&sregs.tr, &env->tr); |
342 | 05330448 | aliguori | set_seg(&sregs.ldt, &env->ldt); |
343 | 05330448 | aliguori | |
344 | 05330448 | aliguori | sregs.idt.limit = env->idt.limit; |
345 | 05330448 | aliguori | sregs.idt.base = env->idt.base; |
346 | 05330448 | aliguori | sregs.gdt.limit = env->gdt.limit; |
347 | 05330448 | aliguori | sregs.gdt.base = env->gdt.base; |
348 | 05330448 | aliguori | |
349 | 05330448 | aliguori | sregs.cr0 = env->cr[0];
|
350 | 05330448 | aliguori | sregs.cr2 = env->cr[2];
|
351 | 05330448 | aliguori | sregs.cr3 = env->cr[3];
|
352 | 05330448 | aliguori | sregs.cr4 = env->cr[4];
|
353 | 05330448 | aliguori | |
354 | 05330448 | aliguori | sregs.cr8 = cpu_get_apic_tpr(env); |
355 | 05330448 | aliguori | sregs.apic_base = cpu_get_apic_base(env); |
356 | 05330448 | aliguori | |
357 | 05330448 | aliguori | sregs.efer = env->efer; |
358 | 05330448 | aliguori | |
359 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
|
360 | 05330448 | aliguori | } |
361 | 05330448 | aliguori | |
362 | 05330448 | aliguori | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, |
363 | 05330448 | aliguori | uint32_t index, uint64_t value) |
364 | 05330448 | aliguori | { |
365 | 05330448 | aliguori | entry->index = index; |
366 | 05330448 | aliguori | entry->data = value; |
367 | 05330448 | aliguori | } |
368 | 05330448 | aliguori | |
369 | 05330448 | aliguori | static int kvm_put_msrs(CPUState *env) |
370 | 05330448 | aliguori | { |
371 | 05330448 | aliguori | struct {
|
372 | 05330448 | aliguori | struct kvm_msrs info;
|
373 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
374 | 05330448 | aliguori | } msr_data; |
375 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
376 | 05330448 | aliguori | int n = 0; |
377 | 05330448 | aliguori | |
378 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); |
379 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); |
380 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); |
381 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
382 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
383 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); |
384 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
385 | 05330448 | aliguori | /* FIXME if lm capable */
|
386 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); |
387 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); |
388 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); |
389 | 05330448 | aliguori | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); |
390 | 05330448 | aliguori | #endif
|
391 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
392 | 05330448 | aliguori | |
393 | 05330448 | aliguori | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data);
|
394 | 05330448 | aliguori | |
395 | 05330448 | aliguori | } |
396 | 05330448 | aliguori | |
397 | 05330448 | aliguori | |
398 | 05330448 | aliguori | static int kvm_get_fpu(CPUState *env) |
399 | 05330448 | aliguori | { |
400 | 05330448 | aliguori | struct kvm_fpu fpu;
|
401 | 05330448 | aliguori | int i, ret;
|
402 | 05330448 | aliguori | |
403 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); |
404 | 05330448 | aliguori | if (ret < 0) |
405 | 05330448 | aliguori | return ret;
|
406 | 05330448 | aliguori | |
407 | 05330448 | aliguori | env->fpstt = (fpu.fsw >> 11) & 7; |
408 | 05330448 | aliguori | env->fpus = fpu.fsw; |
409 | 05330448 | aliguori | env->fpuc = fpu.fcw; |
410 | 05330448 | aliguori | for (i = 0; i < 8; ++i) |
411 | 05330448 | aliguori | env->fptags[i] = !((fpu.ftwx >> i) & 1);
|
412 | 05330448 | aliguori | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs);
|
413 | 05330448 | aliguori | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs);
|
414 | 05330448 | aliguori | env->mxcsr = fpu.mxcsr; |
415 | 05330448 | aliguori | |
416 | 05330448 | aliguori | return 0; |
417 | 05330448 | aliguori | } |
418 | 05330448 | aliguori | |
419 | 05330448 | aliguori | static int kvm_get_sregs(CPUState *env) |
420 | 05330448 | aliguori | { |
421 | 05330448 | aliguori | struct kvm_sregs sregs;
|
422 | 05330448 | aliguori | uint32_t hflags; |
423 | 05330448 | aliguori | int ret;
|
424 | 05330448 | aliguori | |
425 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); |
426 | 05330448 | aliguori | if (ret < 0) |
427 | 05330448 | aliguori | return ret;
|
428 | 05330448 | aliguori | |
429 | 05330448 | aliguori | memcpy(env->interrupt_bitmap, |
430 | 05330448 | aliguori | sregs.interrupt_bitmap, |
431 | 05330448 | aliguori | sizeof(sregs.interrupt_bitmap));
|
432 | 05330448 | aliguori | |
433 | 05330448 | aliguori | get_seg(&env->segs[R_CS], &sregs.cs); |
434 | 05330448 | aliguori | get_seg(&env->segs[R_DS], &sregs.ds); |
435 | 05330448 | aliguori | get_seg(&env->segs[R_ES], &sregs.es); |
436 | 05330448 | aliguori | get_seg(&env->segs[R_FS], &sregs.fs); |
437 | 05330448 | aliguori | get_seg(&env->segs[R_GS], &sregs.gs); |
438 | 05330448 | aliguori | get_seg(&env->segs[R_SS], &sregs.ss); |
439 | 05330448 | aliguori | |
440 | 05330448 | aliguori | get_seg(&env->tr, &sregs.tr); |
441 | 05330448 | aliguori | get_seg(&env->ldt, &sregs.ldt); |
442 | 05330448 | aliguori | |
443 | 05330448 | aliguori | env->idt.limit = sregs.idt.limit; |
444 | 05330448 | aliguori | env->idt.base = sregs.idt.base; |
445 | 05330448 | aliguori | env->gdt.limit = sregs.gdt.limit; |
446 | 05330448 | aliguori | env->gdt.base = sregs.gdt.base; |
447 | 05330448 | aliguori | |
448 | 05330448 | aliguori | env->cr[0] = sregs.cr0;
|
449 | 05330448 | aliguori | env->cr[2] = sregs.cr2;
|
450 | 05330448 | aliguori | env->cr[3] = sregs.cr3;
|
451 | 05330448 | aliguori | env->cr[4] = sregs.cr4;
|
452 | 05330448 | aliguori | |
453 | 05330448 | aliguori | cpu_set_apic_base(env, sregs.apic_base); |
454 | 05330448 | aliguori | |
455 | 05330448 | aliguori | env->efer = sregs.efer; |
456 | 05330448 | aliguori | //cpu_set_apic_tpr(env, sregs.cr8);
|
457 | 05330448 | aliguori | |
458 | 05330448 | aliguori | #define HFLAG_COPY_MASK ~( \
|
459 | 05330448 | aliguori | HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ |
460 | 05330448 | aliguori | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ |
461 | 05330448 | aliguori | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ |
462 | 05330448 | aliguori | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) |
463 | 05330448 | aliguori | |
464 | 05330448 | aliguori | |
465 | 05330448 | aliguori | |
466 | 05330448 | aliguori | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; |
467 | 05330448 | aliguori | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT);
|
468 | 05330448 | aliguori | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) &
|
469 | 05330448 | aliguori | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
470 | 05330448 | aliguori | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
471 | 05330448 | aliguori | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) <<
|
472 | 05330448 | aliguori | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
473 | 05330448 | aliguori | |
474 | 05330448 | aliguori | if (env->efer & MSR_EFER_LMA) {
|
475 | 05330448 | aliguori | hflags |= HF_LMA_MASK; |
476 | 05330448 | aliguori | } |
477 | 05330448 | aliguori | |
478 | 05330448 | aliguori | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) {
|
479 | 05330448 | aliguori | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
480 | 05330448 | aliguori | } else {
|
481 | 05330448 | aliguori | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> |
482 | 05330448 | aliguori | (DESC_B_SHIFT - HF_CS32_SHIFT); |
483 | 05330448 | aliguori | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
484 | 05330448 | aliguori | (DESC_B_SHIFT - HF_SS32_SHIFT); |
485 | 05330448 | aliguori | if (!(env->cr[0] & CR0_PE_MASK) || |
486 | 05330448 | aliguori | (env->eflags & VM_MASK) || |
487 | 05330448 | aliguori | !(hflags & HF_CS32_MASK)) { |
488 | 05330448 | aliguori | hflags |= HF_ADDSEG_MASK; |
489 | 05330448 | aliguori | } else {
|
490 | 05330448 | aliguori | hflags |= ((env->segs[R_DS].base | |
491 | 05330448 | aliguori | env->segs[R_ES].base | |
492 | 05330448 | aliguori | env->segs[R_SS].base) != 0) <<
|
493 | 05330448 | aliguori | HF_ADDSEG_SHIFT; |
494 | 05330448 | aliguori | } |
495 | 05330448 | aliguori | } |
496 | 05330448 | aliguori | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; |
497 | 05330448 | aliguori | |
498 | 05330448 | aliguori | return 0; |
499 | 05330448 | aliguori | } |
500 | 05330448 | aliguori | |
501 | 05330448 | aliguori | static int kvm_get_msrs(CPUState *env) |
502 | 05330448 | aliguori | { |
503 | 05330448 | aliguori | struct {
|
504 | 05330448 | aliguori | struct kvm_msrs info;
|
505 | 05330448 | aliguori | struct kvm_msr_entry entries[100]; |
506 | 05330448 | aliguori | } msr_data; |
507 | 05330448 | aliguori | struct kvm_msr_entry *msrs = msr_data.entries;
|
508 | 05330448 | aliguori | int ret, i, n;
|
509 | 05330448 | aliguori | |
510 | 05330448 | aliguori | n = 0;
|
511 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_CS; |
512 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_ESP; |
513 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_SYSENTER_EIP; |
514 | 05330448 | aliguori | if (kvm_has_msr_star(env))
|
515 | 05330448 | aliguori | msrs[n++].index = MSR_STAR; |
516 | 05330448 | aliguori | msrs[n++].index = MSR_IA32_TSC; |
517 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
518 | 05330448 | aliguori | /* FIXME lm_capable_kernel */
|
519 | 05330448 | aliguori | msrs[n++].index = MSR_CSTAR; |
520 | 05330448 | aliguori | msrs[n++].index = MSR_KERNELGSBASE; |
521 | 05330448 | aliguori | msrs[n++].index = MSR_FMASK; |
522 | 05330448 | aliguori | msrs[n++].index = MSR_LSTAR; |
523 | 05330448 | aliguori | #endif
|
524 | 05330448 | aliguori | msr_data.info.nmsrs = n; |
525 | 05330448 | aliguori | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); |
526 | 05330448 | aliguori | if (ret < 0) |
527 | 05330448 | aliguori | return ret;
|
528 | 05330448 | aliguori | |
529 | 05330448 | aliguori | for (i = 0; i < ret; i++) { |
530 | 05330448 | aliguori | switch (msrs[i].index) {
|
531 | 05330448 | aliguori | case MSR_IA32_SYSENTER_CS:
|
532 | 05330448 | aliguori | env->sysenter_cs = msrs[i].data; |
533 | 05330448 | aliguori | break;
|
534 | 05330448 | aliguori | case MSR_IA32_SYSENTER_ESP:
|
535 | 05330448 | aliguori | env->sysenter_esp = msrs[i].data; |
536 | 05330448 | aliguori | break;
|
537 | 05330448 | aliguori | case MSR_IA32_SYSENTER_EIP:
|
538 | 05330448 | aliguori | env->sysenter_eip = msrs[i].data; |
539 | 05330448 | aliguori | break;
|
540 | 05330448 | aliguori | case MSR_STAR:
|
541 | 05330448 | aliguori | env->star = msrs[i].data; |
542 | 05330448 | aliguori | break;
|
543 | 05330448 | aliguori | #ifdef TARGET_X86_64
|
544 | 05330448 | aliguori | case MSR_CSTAR:
|
545 | 05330448 | aliguori | env->cstar = msrs[i].data; |
546 | 05330448 | aliguori | break;
|
547 | 05330448 | aliguori | case MSR_KERNELGSBASE:
|
548 | 05330448 | aliguori | env->kernelgsbase = msrs[i].data; |
549 | 05330448 | aliguori | break;
|
550 | 05330448 | aliguori | case MSR_FMASK:
|
551 | 05330448 | aliguori | env->fmask = msrs[i].data; |
552 | 05330448 | aliguori | break;
|
553 | 05330448 | aliguori | case MSR_LSTAR:
|
554 | 05330448 | aliguori | env->lstar = msrs[i].data; |
555 | 05330448 | aliguori | break;
|
556 | 05330448 | aliguori | #endif
|
557 | 05330448 | aliguori | case MSR_IA32_TSC:
|
558 | 05330448 | aliguori | env->tsc = msrs[i].data; |
559 | 05330448 | aliguori | break;
|
560 | 05330448 | aliguori | } |
561 | 05330448 | aliguori | } |
562 | 05330448 | aliguori | |
563 | 05330448 | aliguori | return 0; |
564 | 05330448 | aliguori | } |
565 | 05330448 | aliguori | |
566 | 05330448 | aliguori | int kvm_arch_put_registers(CPUState *env)
|
567 | 05330448 | aliguori | { |
568 | 05330448 | aliguori | int ret;
|
569 | 05330448 | aliguori | |
570 | 05330448 | aliguori | ret = kvm_getput_regs(env, 1);
|
571 | 05330448 | aliguori | if (ret < 0) |
572 | 05330448 | aliguori | return ret;
|
573 | 05330448 | aliguori | |
574 | 05330448 | aliguori | ret = kvm_put_fpu(env); |
575 | 05330448 | aliguori | if (ret < 0) |
576 | 05330448 | aliguori | return ret;
|
577 | 05330448 | aliguori | |
578 | 05330448 | aliguori | ret = kvm_put_sregs(env); |
579 | 05330448 | aliguori | if (ret < 0) |
580 | 05330448 | aliguori | return ret;
|
581 | 05330448 | aliguori | |
582 | 05330448 | aliguori | ret = kvm_put_msrs(env); |
583 | 05330448 | aliguori | if (ret < 0) |
584 | 05330448 | aliguori | return ret;
|
585 | 05330448 | aliguori | |
586 | 05330448 | aliguori | return 0; |
587 | 05330448 | aliguori | } |
588 | 05330448 | aliguori | |
589 | 05330448 | aliguori | int kvm_arch_get_registers(CPUState *env)
|
590 | 05330448 | aliguori | { |
591 | 05330448 | aliguori | int ret;
|
592 | 05330448 | aliguori | |
593 | 05330448 | aliguori | ret = kvm_getput_regs(env, 0);
|
594 | 05330448 | aliguori | if (ret < 0) |
595 | 05330448 | aliguori | return ret;
|
596 | 05330448 | aliguori | |
597 | 05330448 | aliguori | ret = kvm_get_fpu(env); |
598 | 05330448 | aliguori | if (ret < 0) |
599 | 05330448 | aliguori | return ret;
|
600 | 05330448 | aliguori | |
601 | 05330448 | aliguori | ret = kvm_get_sregs(env); |
602 | 05330448 | aliguori | if (ret < 0) |
603 | 05330448 | aliguori | return ret;
|
604 | 05330448 | aliguori | |
605 | 05330448 | aliguori | ret = kvm_get_msrs(env); |
606 | 05330448 | aliguori | if (ret < 0) |
607 | 05330448 | aliguori | return ret;
|
608 | 05330448 | aliguori | |
609 | 05330448 | aliguori | return 0; |
610 | 05330448 | aliguori | } |
611 | 05330448 | aliguori | |
612 | 05330448 | aliguori | int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) |
613 | 05330448 | aliguori | { |
614 | 05330448 | aliguori | /* Try to inject an interrupt if the guest can accept it */
|
615 | 05330448 | aliguori | if (run->ready_for_interrupt_injection &&
|
616 | 05330448 | aliguori | (env->interrupt_request & CPU_INTERRUPT_HARD) && |
617 | 05330448 | aliguori | (env->eflags & IF_MASK)) { |
618 | 05330448 | aliguori | int irq;
|
619 | 05330448 | aliguori | |
620 | 05330448 | aliguori | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
621 | 05330448 | aliguori | irq = cpu_get_pic_interrupt(env); |
622 | 05330448 | aliguori | if (irq >= 0) { |
623 | 05330448 | aliguori | struct kvm_interrupt intr;
|
624 | 05330448 | aliguori | intr.irq = irq; |
625 | 05330448 | aliguori | /* FIXME: errors */
|
626 | 05330448 | aliguori | dprintf("injected interrupt %d\n", irq);
|
627 | 05330448 | aliguori | kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
628 | 05330448 | aliguori | } |
629 | 05330448 | aliguori | } |
630 | 05330448 | aliguori | |
631 | 05330448 | aliguori | /* If we have an interrupt but the guest is not ready to receive an
|
632 | 05330448 | aliguori | * interrupt, request an interrupt window exit. This will
|
633 | 05330448 | aliguori | * cause a return to userspace as soon as the guest is ready to
|
634 | 05330448 | aliguori | * receive interrupts. */
|
635 | 05330448 | aliguori | if ((env->interrupt_request & CPU_INTERRUPT_HARD))
|
636 | 05330448 | aliguori | run->request_interrupt_window = 1;
|
637 | 05330448 | aliguori | else
|
638 | 05330448 | aliguori | run->request_interrupt_window = 0;
|
639 | 05330448 | aliguori | |
640 | 05330448 | aliguori | dprintf("setting tpr\n");
|
641 | 05330448 | aliguori | run->cr8 = cpu_get_apic_tpr(env); |
642 | 05330448 | aliguori | |
643 | 05330448 | aliguori | return 0; |
644 | 05330448 | aliguori | } |
645 | 05330448 | aliguori | |
646 | 05330448 | aliguori | int kvm_arch_post_run(CPUState *env, struct kvm_run *run) |
647 | 05330448 | aliguori | { |
648 | 05330448 | aliguori | if (run->if_flag)
|
649 | 05330448 | aliguori | env->eflags |= IF_MASK; |
650 | 05330448 | aliguori | else
|
651 | 05330448 | aliguori | env->eflags &= ~IF_MASK; |
652 | 05330448 | aliguori | |
653 | 05330448 | aliguori | cpu_set_apic_tpr(env, run->cr8); |
654 | 05330448 | aliguori | cpu_set_apic_base(env, run->apic_base); |
655 | 05330448 | aliguori | |
656 | 05330448 | aliguori | return 0; |
657 | 05330448 | aliguori | } |
658 | 05330448 | aliguori | |
659 | 05330448 | aliguori | static int kvm_handle_halt(CPUState *env) |
660 | 05330448 | aliguori | { |
661 | 05330448 | aliguori | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) &&
|
662 | 05330448 | aliguori | (env->eflags & IF_MASK)) && |
663 | 05330448 | aliguori | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { |
664 | 05330448 | aliguori | env->halted = 1;
|
665 | 05330448 | aliguori | env->exception_index = EXCP_HLT; |
666 | 05330448 | aliguori | return 0; |
667 | 05330448 | aliguori | } |
668 | 05330448 | aliguori | |
669 | 05330448 | aliguori | return 1; |
670 | 05330448 | aliguori | } |
671 | 05330448 | aliguori | |
672 | 05330448 | aliguori | int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) |
673 | 05330448 | aliguori | { |
674 | 05330448 | aliguori | int ret = 0; |
675 | 05330448 | aliguori | |
676 | 05330448 | aliguori | switch (run->exit_reason) {
|
677 | 05330448 | aliguori | case KVM_EXIT_HLT:
|
678 | 05330448 | aliguori | dprintf("handle_hlt\n");
|
679 | 05330448 | aliguori | ret = kvm_handle_halt(env); |
680 | 05330448 | aliguori | break;
|
681 | 05330448 | aliguori | } |
682 | 05330448 | aliguori | |
683 | 05330448 | aliguori | return ret;
|
684 | 05330448 | aliguori | } |