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05330448 AL |
1 | /* |
2 | * QEMU KVM support | |
3 | * | |
4 | * Copyright (C) 2006-2008 Qumranet Technologies | |
5 | * Copyright IBM, Corp. 2008 | |
6 | * | |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com> | |
9 | * | |
10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
11 | * See the COPYING file in the top-level directory. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <sys/types.h> | |
16 | #include <sys/ioctl.h> | |
17 | #include <sys/mman.h> | |
25d2e361 | 18 | #include <sys/utsname.h> |
05330448 AL |
19 | |
20 | #include <linux/kvm.h> | |
5802e066 | 21 | #include <linux/kvm_para.h> |
05330448 AL |
22 | |
23 | #include "qemu-common.h" | |
24 | #include "sysemu.h" | |
25 | #include "kvm.h" | |
1d31f66b | 26 | #include "kvm_i386.h" |
05330448 | 27 | #include "cpu.h" |
e22a25c9 | 28 | #include "gdbstub.h" |
0e607a80 | 29 | #include "host-utils.h" |
4c5b10b7 | 30 | #include "hw/pc.h" |
408392b3 | 31 | #include "hw/apic.h" |
35bed8ee | 32 | #include "ioport.h" |
eab70139 | 33 | #include "hyperv.h" |
b139bd30 | 34 | #include "hw/pci.h" |
05330448 AL |
35 | |
36 | //#define DEBUG_KVM | |
37 | ||
38 | #ifdef DEBUG_KVM | |
8c0d577e | 39 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
40 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
41 | #else | |
8c0d577e | 42 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
43 | do { } while (0) |
44 | #endif | |
45 | ||
1a03675d GC |
46 | #define MSR_KVM_WALL_CLOCK 0x11 |
47 | #define MSR_KVM_SYSTEM_TIME 0x12 | |
48 | ||
c0532a76 MT |
49 | #ifndef BUS_MCEERR_AR |
50 | #define BUS_MCEERR_AR 4 | |
51 | #endif | |
52 | #ifndef BUS_MCEERR_AO | |
53 | #define BUS_MCEERR_AO 5 | |
54 | #endif | |
55 | ||
94a8d39a JK |
56 | const KVMCapabilityInfo kvm_arch_required_capabilities[] = { |
57 | KVM_CAP_INFO(SET_TSS_ADDR), | |
58 | KVM_CAP_INFO(EXT_CPUID), | |
59 | KVM_CAP_INFO(MP_STATE), | |
60 | KVM_CAP_LAST_INFO | |
61 | }; | |
25d2e361 | 62 | |
c3a3a7d3 JK |
63 | static bool has_msr_star; |
64 | static bool has_msr_hsave_pa; | |
aa82ba54 | 65 | static bool has_msr_tsc_deadline; |
c5999bfc | 66 | static bool has_msr_async_pf_en; |
bc9a839d | 67 | static bool has_msr_pv_eoi_en; |
21e87c46 | 68 | static bool has_msr_misc_enable; |
25d2e361 | 69 | static int lm_capable_kernel; |
b827df58 | 70 | |
1d31f66b PM |
71 | bool kvm_allows_irq0_override(void) |
72 | { | |
73 | return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing(); | |
74 | } | |
75 | ||
b827df58 AK |
76 | static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max) |
77 | { | |
78 | struct kvm_cpuid2 *cpuid; | |
79 | int r, size; | |
80 | ||
81 | size = sizeof(*cpuid) + max * sizeof(*cpuid->entries); | |
7267c094 | 82 | cpuid = (struct kvm_cpuid2 *)g_malloc0(size); |
b827df58 AK |
83 | cpuid->nent = max; |
84 | r = kvm_ioctl(s, KVM_GET_SUPPORTED_CPUID, cpuid); | |
76ae317f MM |
85 | if (r == 0 && cpuid->nent >= max) { |
86 | r = -E2BIG; | |
87 | } | |
b827df58 AK |
88 | if (r < 0) { |
89 | if (r == -E2BIG) { | |
7267c094 | 90 | g_free(cpuid); |
b827df58 AK |
91 | return NULL; |
92 | } else { | |
93 | fprintf(stderr, "KVM_GET_SUPPORTED_CPUID failed: %s\n", | |
94 | strerror(-r)); | |
95 | exit(1); | |
96 | } | |
97 | } | |
98 | return cpuid; | |
99 | } | |
100 | ||
0c31b744 GC |
101 | struct kvm_para_features { |
102 | int cap; | |
103 | int feature; | |
104 | } para_features[] = { | |
105 | { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE }, | |
106 | { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY }, | |
107 | { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP }, | |
0c31b744 | 108 | { KVM_CAP_ASYNC_PF, KVM_FEATURE_ASYNC_PF }, |
0c31b744 GC |
109 | { -1, -1 } |
110 | }; | |
111 | ||
ba9bc59e | 112 | static int get_para_features(KVMState *s) |
0c31b744 GC |
113 | { |
114 | int i, features = 0; | |
115 | ||
116 | for (i = 0; i < ARRAY_SIZE(para_features) - 1; i++) { | |
ba9bc59e | 117 | if (kvm_check_extension(s, para_features[i].cap)) { |
0c31b744 GC |
118 | features |= (1 << para_features[i].feature); |
119 | } | |
120 | } | |
121 | ||
122 | return features; | |
123 | } | |
0c31b744 GC |
124 | |
125 | ||
ba9bc59e | 126 | uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function, |
c958a8bd | 127 | uint32_t index, int reg) |
b827df58 AK |
128 | { |
129 | struct kvm_cpuid2 *cpuid; | |
130 | int i, max; | |
131 | uint32_t ret = 0; | |
132 | uint32_t cpuid_1_edx; | |
0c31b744 | 133 | int has_kvm_features = 0; |
b827df58 | 134 | |
b827df58 | 135 | max = 1; |
ba9bc59e | 136 | while ((cpuid = try_get_cpuid(s, max)) == NULL) { |
b827df58 AK |
137 | max *= 2; |
138 | } | |
139 | ||
140 | for (i = 0; i < cpuid->nent; ++i) { | |
c958a8bd SY |
141 | if (cpuid->entries[i].function == function && |
142 | cpuid->entries[i].index == index) { | |
0c31b744 GC |
143 | if (cpuid->entries[i].function == KVM_CPUID_FEATURES) { |
144 | has_kvm_features = 1; | |
145 | } | |
b827df58 AK |
146 | switch (reg) { |
147 | case R_EAX: | |
148 | ret = cpuid->entries[i].eax; | |
149 | break; | |
150 | case R_EBX: | |
151 | ret = cpuid->entries[i].ebx; | |
152 | break; | |
153 | case R_ECX: | |
154 | ret = cpuid->entries[i].ecx; | |
155 | break; | |
156 | case R_EDX: | |
157 | ret = cpuid->entries[i].edx; | |
19ccb8ea JK |
158 | switch (function) { |
159 | case 1: | |
160 | /* KVM before 2.6.30 misreports the following features */ | |
161 | ret |= CPUID_MTRR | CPUID_PAT | CPUID_MCE | CPUID_MCA; | |
162 | break; | |
163 | case 0x80000001: | |
b827df58 AK |
164 | /* On Intel, kvm returns cpuid according to the Intel spec, |
165 | * so add missing bits according to the AMD spec: | |
166 | */ | |
ba9bc59e | 167 | cpuid_1_edx = kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX); |
c1667e40 | 168 | ret |= cpuid_1_edx & 0x183f7ff; |
19ccb8ea | 169 | break; |
b827df58 AK |
170 | } |
171 | break; | |
172 | } | |
173 | } | |
174 | } | |
175 | ||
7267c094 | 176 | g_free(cpuid); |
b827df58 | 177 | |
0c31b744 GC |
178 | /* fallback for older kernels */ |
179 | if (!has_kvm_features && (function == KVM_CPUID_FEATURES)) { | |
ba9bc59e | 180 | ret = get_para_features(s); |
b9bec74b | 181 | } |
0c31b744 GC |
182 | |
183 | return ret; | |
bb0300dc | 184 | } |
bb0300dc | 185 | |
3c85e74f HY |
186 | typedef struct HWPoisonPage { |
187 | ram_addr_t ram_addr; | |
188 | QLIST_ENTRY(HWPoisonPage) list; | |
189 | } HWPoisonPage; | |
190 | ||
191 | static QLIST_HEAD(, HWPoisonPage) hwpoison_page_list = | |
192 | QLIST_HEAD_INITIALIZER(hwpoison_page_list); | |
193 | ||
194 | static void kvm_unpoison_all(void *param) | |
195 | { | |
196 | HWPoisonPage *page, *next_page; | |
197 | ||
198 | QLIST_FOREACH_SAFE(page, &hwpoison_page_list, list, next_page) { | |
199 | QLIST_REMOVE(page, list); | |
200 | qemu_ram_remap(page->ram_addr, TARGET_PAGE_SIZE); | |
7267c094 | 201 | g_free(page); |
3c85e74f HY |
202 | } |
203 | } | |
204 | ||
3c85e74f HY |
205 | static void kvm_hwpoison_page_add(ram_addr_t ram_addr) |
206 | { | |
207 | HWPoisonPage *page; | |
208 | ||
209 | QLIST_FOREACH(page, &hwpoison_page_list, list) { | |
210 | if (page->ram_addr == ram_addr) { | |
211 | return; | |
212 | } | |
213 | } | |
7267c094 | 214 | page = g_malloc(sizeof(HWPoisonPage)); |
3c85e74f HY |
215 | page->ram_addr = ram_addr; |
216 | QLIST_INSERT_HEAD(&hwpoison_page_list, page, list); | |
217 | } | |
218 | ||
e7701825 MT |
219 | static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap, |
220 | int *max_banks) | |
221 | { | |
222 | int r; | |
223 | ||
14a09518 | 224 | r = kvm_check_extension(s, KVM_CAP_MCE); |
e7701825 MT |
225 | if (r > 0) { |
226 | *max_banks = r; | |
227 | return kvm_ioctl(s, KVM_X86_GET_MCE_CAP_SUPPORTED, mce_cap); | |
228 | } | |
229 | return -ENOSYS; | |
230 | } | |
231 | ||
317ac620 | 232 | static void kvm_mce_inject(CPUX86State *env, target_phys_addr_t paddr, int code) |
e7701825 | 233 | { |
c34d440a JK |
234 | uint64_t status = MCI_STATUS_VAL | MCI_STATUS_UC | MCI_STATUS_EN | |
235 | MCI_STATUS_MISCV | MCI_STATUS_ADDRV | MCI_STATUS_S; | |
236 | uint64_t mcg_status = MCG_STATUS_MCIP; | |
e7701825 | 237 | |
c34d440a JK |
238 | if (code == BUS_MCEERR_AR) { |
239 | status |= MCI_STATUS_AR | 0x134; | |
240 | mcg_status |= MCG_STATUS_EIPV; | |
241 | } else { | |
242 | status |= 0xc0; | |
243 | mcg_status |= MCG_STATUS_RIPV; | |
419fb20a | 244 | } |
c34d440a JK |
245 | cpu_x86_inject_mce(NULL, env, 9, status, mcg_status, paddr, |
246 | (MCM_ADDR_PHYS << 6) | 0xc, | |
247 | cpu_x86_support_mca_broadcast(env) ? | |
248 | MCE_INJECT_BROADCAST : 0); | |
419fb20a | 249 | } |
419fb20a JK |
250 | |
251 | static void hardware_memory_error(void) | |
252 | { | |
253 | fprintf(stderr, "Hardware memory error!\n"); | |
254 | exit(1); | |
255 | } | |
256 | ||
317ac620 | 257 | int kvm_arch_on_sigbus_vcpu(CPUX86State *env, int code, void *addr) |
419fb20a | 258 | { |
419fb20a JK |
259 | ram_addr_t ram_addr; |
260 | target_phys_addr_t paddr; | |
261 | ||
262 | if ((env->mcg_cap & MCG_SER_P) && addr | |
c34d440a JK |
263 | && (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) { |
264 | if (qemu_ram_addr_from_host(addr, &ram_addr) || | |
9f213ed9 | 265 | !kvm_physical_memory_addr_from_host(env->kvm_state, addr, &paddr)) { |
419fb20a JK |
266 | fprintf(stderr, "Hardware memory error for memory used by " |
267 | "QEMU itself instead of guest system!\n"); | |
268 | /* Hope we are lucky for AO MCE */ | |
269 | if (code == BUS_MCEERR_AO) { | |
270 | return 0; | |
271 | } else { | |
272 | hardware_memory_error(); | |
273 | } | |
274 | } | |
3c85e74f | 275 | kvm_hwpoison_page_add(ram_addr); |
c34d440a | 276 | kvm_mce_inject(env, paddr, code); |
e56ff191 | 277 | } else { |
419fb20a JK |
278 | if (code == BUS_MCEERR_AO) { |
279 | return 0; | |
280 | } else if (code == BUS_MCEERR_AR) { | |
281 | hardware_memory_error(); | |
282 | } else { | |
283 | return 1; | |
284 | } | |
285 | } | |
286 | return 0; | |
287 | } | |
288 | ||
289 | int kvm_arch_on_sigbus(int code, void *addr) | |
290 | { | |
419fb20a | 291 | if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) { |
419fb20a JK |
292 | ram_addr_t ram_addr; |
293 | target_phys_addr_t paddr; | |
294 | ||
295 | /* Hope we are lucky for AO MCE */ | |
c34d440a | 296 | if (qemu_ram_addr_from_host(addr, &ram_addr) || |
9f213ed9 AK |
297 | !kvm_physical_memory_addr_from_host(first_cpu->kvm_state, addr, |
298 | &paddr)) { | |
419fb20a JK |
299 | fprintf(stderr, "Hardware memory error for memory used by " |
300 | "QEMU itself instead of guest system!: %p\n", addr); | |
301 | return 0; | |
302 | } | |
3c85e74f | 303 | kvm_hwpoison_page_add(ram_addr); |
c34d440a | 304 | kvm_mce_inject(first_cpu, paddr, code); |
e56ff191 | 305 | } else { |
419fb20a JK |
306 | if (code == BUS_MCEERR_AO) { |
307 | return 0; | |
308 | } else if (code == BUS_MCEERR_AR) { | |
309 | hardware_memory_error(); | |
310 | } else { | |
311 | return 1; | |
312 | } | |
313 | } | |
314 | return 0; | |
315 | } | |
e7701825 | 316 | |
317ac620 | 317 | static int kvm_inject_mce_oldstyle(CPUX86State *env) |
ab443475 | 318 | { |
ab443475 JK |
319 | if (!kvm_has_vcpu_events() && env->exception_injected == EXCP12_MCHK) { |
320 | unsigned int bank, bank_num = env->mcg_cap & 0xff; | |
321 | struct kvm_x86_mce mce; | |
322 | ||
323 | env->exception_injected = -1; | |
324 | ||
325 | /* | |
326 | * There must be at least one bank in use if an MCE is pending. | |
327 | * Find it and use its values for the event injection. | |
328 | */ | |
329 | for (bank = 0; bank < bank_num; bank++) { | |
330 | if (env->mce_banks[bank * 4 + 1] & MCI_STATUS_VAL) { | |
331 | break; | |
332 | } | |
333 | } | |
334 | assert(bank < bank_num); | |
335 | ||
336 | mce.bank = bank; | |
337 | mce.status = env->mce_banks[bank * 4 + 1]; | |
338 | mce.mcg_status = env->mcg_status; | |
339 | mce.addr = env->mce_banks[bank * 4 + 2]; | |
340 | mce.misc = env->mce_banks[bank * 4 + 3]; | |
341 | ||
342 | return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, &mce); | |
343 | } | |
ab443475 JK |
344 | return 0; |
345 | } | |
346 | ||
1dfb4dd9 | 347 | static void cpu_update_state(void *opaque, int running, RunState state) |
b8cc45d6 | 348 | { |
317ac620 | 349 | CPUX86State *env = opaque; |
b8cc45d6 GC |
350 | |
351 | if (running) { | |
352 | env->tsc_valid = false; | |
353 | } | |
354 | } | |
355 | ||
317ac620 | 356 | int kvm_arch_init_vcpu(CPUX86State *env) |
05330448 AL |
357 | { |
358 | struct { | |
486bd5a2 AL |
359 | struct kvm_cpuid2 cpuid; |
360 | struct kvm_cpuid_entry2 entries[100]; | |
541dc0d4 | 361 | } QEMU_PACKED cpuid_data; |
ba9bc59e | 362 | KVMState *s = env->kvm_state; |
486bd5a2 | 363 | uint32_t limit, i, j, cpuid_i; |
a33609ca | 364 | uint32_t unused; |
bb0300dc | 365 | struct kvm_cpuid_entry2 *c; |
bb0300dc | 366 | uint32_t signature[3]; |
e7429073 | 367 | int r; |
05330448 | 368 | |
ba9bc59e | 369 | env->cpuid_features &= kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX); |
6c0d7ee8 AP |
370 | |
371 | i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR; | |
a75b3e0f | 372 | j = env->cpuid_ext_features & CPUID_EXT_TSC_DEADLINE_TIMER; |
ba9bc59e | 373 | env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(s, 1, 0, R_ECX); |
6c0d7ee8 | 374 | env->cpuid_ext_features |= i; |
a75b3e0f LJ |
375 | if (j && kvm_irqchip_in_kernel() && |
376 | kvm_check_extension(s, KVM_CAP_TSC_DEADLINE_TIMER)) { | |
377 | env->cpuid_ext_features |= CPUID_EXT_TSC_DEADLINE_TIMER; | |
378 | } | |
6c0d7ee8 | 379 | |
ba9bc59e | 380 | env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(s, 0x80000001, |
c958a8bd | 381 | 0, R_EDX); |
ba9bc59e | 382 | env->cpuid_ext3_features &= kvm_arch_get_supported_cpuid(s, 0x80000001, |
c958a8bd | 383 | 0, R_ECX); |
ba9bc59e | 384 | env->cpuid_svm_features &= kvm_arch_get_supported_cpuid(s, 0x8000000A, |
296acb64 JR |
385 | 0, R_EDX); |
386 | ||
05330448 AL |
387 | cpuid_i = 0; |
388 | ||
bb0300dc | 389 | /* Paravirtualization CPUIDs */ |
bb0300dc GN |
390 | c = &cpuid_data.entries[cpuid_i++]; |
391 | memset(c, 0, sizeof(*c)); | |
392 | c->function = KVM_CPUID_SIGNATURE; | |
eab70139 VR |
393 | if (!hyperv_enabled()) { |
394 | memcpy(signature, "KVMKVMKVM\0\0\0", 12); | |
395 | c->eax = 0; | |
396 | } else { | |
397 | memcpy(signature, "Microsoft Hv", 12); | |
398 | c->eax = HYPERV_CPUID_MIN; | |
399 | } | |
bb0300dc GN |
400 | c->ebx = signature[0]; |
401 | c->ecx = signature[1]; | |
402 | c->edx = signature[2]; | |
403 | ||
404 | c = &cpuid_data.entries[cpuid_i++]; | |
405 | memset(c, 0, sizeof(*c)); | |
406 | c->function = KVM_CPUID_FEATURES; | |
ba9bc59e JK |
407 | c->eax = env->cpuid_kvm_features & |
408 | kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX); | |
0c31b744 | 409 | |
eab70139 VR |
410 | if (hyperv_enabled()) { |
411 | memcpy(signature, "Hv#1\0\0\0\0\0\0\0\0", 12); | |
412 | c->eax = signature[0]; | |
413 | ||
414 | c = &cpuid_data.entries[cpuid_i++]; | |
415 | memset(c, 0, sizeof(*c)); | |
416 | c->function = HYPERV_CPUID_VERSION; | |
417 | c->eax = 0x00001bbc; | |
418 | c->ebx = 0x00060001; | |
419 | ||
420 | c = &cpuid_data.entries[cpuid_i++]; | |
421 | memset(c, 0, sizeof(*c)); | |
422 | c->function = HYPERV_CPUID_FEATURES; | |
423 | if (hyperv_relaxed_timing_enabled()) { | |
424 | c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE; | |
425 | } | |
426 | if (hyperv_vapic_recommended()) { | |
427 | c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE; | |
428 | c->eax |= HV_X64_MSR_APIC_ACCESS_AVAILABLE; | |
429 | } | |
430 | ||
431 | c = &cpuid_data.entries[cpuid_i++]; | |
432 | memset(c, 0, sizeof(*c)); | |
433 | c->function = HYPERV_CPUID_ENLIGHTMENT_INFO; | |
434 | if (hyperv_relaxed_timing_enabled()) { | |
435 | c->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED; | |
436 | } | |
437 | if (hyperv_vapic_recommended()) { | |
438 | c->eax |= HV_X64_APIC_ACCESS_RECOMMENDED; | |
439 | } | |
440 | c->ebx = hyperv_get_spinlock_retries(); | |
441 | ||
442 | c = &cpuid_data.entries[cpuid_i++]; | |
443 | memset(c, 0, sizeof(*c)); | |
444 | c->function = HYPERV_CPUID_IMPLEMENT_LIMITS; | |
445 | c->eax = 0x40; | |
446 | c->ebx = 0x40; | |
447 | ||
448 | c = &cpuid_data.entries[cpuid_i++]; | |
449 | memset(c, 0, sizeof(*c)); | |
450 | c->function = KVM_CPUID_SIGNATURE_NEXT; | |
451 | memcpy(signature, "KVMKVMKVM\0\0\0", 12); | |
452 | c->eax = 0; | |
453 | c->ebx = signature[0]; | |
454 | c->ecx = signature[1]; | |
455 | c->edx = signature[2]; | |
456 | } | |
457 | ||
0c31b744 | 458 | has_msr_async_pf_en = c->eax & (1 << KVM_FEATURE_ASYNC_PF); |
bb0300dc | 459 | |
bc9a839d MT |
460 | has_msr_pv_eoi_en = c->eax & (1 << KVM_FEATURE_PV_EOI); |
461 | ||
a33609ca | 462 | cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused); |
05330448 AL |
463 | |
464 | for (i = 0; i <= limit; i++) { | |
bb0300dc | 465 | c = &cpuid_data.entries[cpuid_i++]; |
486bd5a2 AL |
466 | |
467 | switch (i) { | |
a36b1029 AL |
468 | case 2: { |
469 | /* Keep reading function 2 till all the input is received */ | |
470 | int times; | |
471 | ||
a36b1029 | 472 | c->function = i; |
a33609ca AL |
473 | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC | |
474 | KVM_CPUID_FLAG_STATE_READ_NEXT; | |
475 | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); | |
476 | times = c->eax & 0xff; | |
a36b1029 AL |
477 | |
478 | for (j = 1; j < times; ++j) { | |
a33609ca | 479 | c = &cpuid_data.entries[cpuid_i++]; |
a36b1029 | 480 | c->function = i; |
a33609ca AL |
481 | c->flags = KVM_CPUID_FLAG_STATEFUL_FUNC; |
482 | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); | |
a36b1029 AL |
483 | } |
484 | break; | |
485 | } | |
486bd5a2 AL |
486 | case 4: |
487 | case 0xb: | |
488 | case 0xd: | |
489 | for (j = 0; ; j++) { | |
31e8c696 AP |
490 | if (i == 0xd && j == 64) { |
491 | break; | |
492 | } | |
486bd5a2 AL |
493 | c->function = i; |
494 | c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; | |
495 | c->index = j; | |
a33609ca | 496 | cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->edx); |
486bd5a2 | 497 | |
b9bec74b | 498 | if (i == 4 && c->eax == 0) { |
486bd5a2 | 499 | break; |
b9bec74b JK |
500 | } |
501 | if (i == 0xb && !(c->ecx & 0xff00)) { | |
486bd5a2 | 502 | break; |
b9bec74b JK |
503 | } |
504 | if (i == 0xd && c->eax == 0) { | |
31e8c696 | 505 | continue; |
b9bec74b | 506 | } |
a33609ca | 507 | c = &cpuid_data.entries[cpuid_i++]; |
486bd5a2 AL |
508 | } |
509 | break; | |
510 | default: | |
486bd5a2 | 511 | c->function = i; |
a33609ca AL |
512 | c->flags = 0; |
513 | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); | |
486bd5a2 AL |
514 | break; |
515 | } | |
05330448 | 516 | } |
a33609ca | 517 | cpu_x86_cpuid(env, 0x80000000, 0, &limit, &unused, &unused, &unused); |
05330448 AL |
518 | |
519 | for (i = 0x80000000; i <= limit; i++) { | |
bb0300dc | 520 | c = &cpuid_data.entries[cpuid_i++]; |
05330448 | 521 | |
05330448 | 522 | c->function = i; |
a33609ca AL |
523 | c->flags = 0; |
524 | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); | |
05330448 AL |
525 | } |
526 | ||
b3baa152 | 527 | /* Call Centaur's CPUID instructions they are supported. */ |
528 | if (env->cpuid_xlevel2 > 0) { | |
529 | env->cpuid_ext4_features &= | |
ba9bc59e | 530 | kvm_arch_get_supported_cpuid(s, 0xC0000001, 0, R_EDX); |
b3baa152 | 531 | cpu_x86_cpuid(env, 0xC0000000, 0, &limit, &unused, &unused, &unused); |
532 | ||
533 | for (i = 0xC0000000; i <= limit; i++) { | |
534 | c = &cpuid_data.entries[cpuid_i++]; | |
535 | ||
536 | c->function = i; | |
537 | c->flags = 0; | |
538 | cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); | |
539 | } | |
540 | } | |
541 | ||
05330448 AL |
542 | cpuid_data.cpuid.nent = cpuid_i; |
543 | ||
e7701825 MT |
544 | if (((env->cpuid_version >> 8)&0xF) >= 6 |
545 | && (env->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA) | |
546 | && kvm_check_extension(env->kvm_state, KVM_CAP_MCE) > 0) { | |
547 | uint64_t mcg_cap; | |
548 | int banks; | |
32a42024 | 549 | int ret; |
e7701825 | 550 | |
75d49497 JK |
551 | ret = kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks); |
552 | if (ret < 0) { | |
553 | fprintf(stderr, "kvm_get_mce_cap_supported: %s", strerror(-ret)); | |
554 | return ret; | |
e7701825 | 555 | } |
75d49497 JK |
556 | |
557 | if (banks > MCE_BANKS_DEF) { | |
558 | banks = MCE_BANKS_DEF; | |
559 | } | |
560 | mcg_cap &= MCE_CAP_DEF; | |
561 | mcg_cap |= banks; | |
562 | ret = kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, &mcg_cap); | |
563 | if (ret < 0) { | |
564 | fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret)); | |
565 | return ret; | |
566 | } | |
567 | ||
568 | env->mcg_cap = mcg_cap; | |
e7701825 | 569 | } |
e7701825 | 570 | |
b8cc45d6 GC |
571 | qemu_add_vm_change_state_handler(cpu_update_state, env); |
572 | ||
7e680753 | 573 | cpuid_data.cpuid.padding = 0; |
e7429073 | 574 | r = kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data); |
fdc9c41a JK |
575 | if (r) { |
576 | return r; | |
577 | } | |
e7429073 | 578 | |
e7429073 JR |
579 | r = kvm_check_extension(env->kvm_state, KVM_CAP_TSC_CONTROL); |
580 | if (r && env->tsc_khz) { | |
581 | r = kvm_vcpu_ioctl(env, KVM_SET_TSC_KHZ, env->tsc_khz); | |
582 | if (r < 0) { | |
583 | fprintf(stderr, "KVM_SET_TSC_KHZ failed\n"); | |
584 | return r; | |
585 | } | |
586 | } | |
e7429073 | 587 | |
fabacc0f JK |
588 | if (kvm_has_xsave()) { |
589 | env->kvm_xsave_buf = qemu_memalign(4096, sizeof(struct kvm_xsave)); | |
590 | } | |
591 | ||
e7429073 | 592 | return 0; |
05330448 AL |
593 | } |
594 | ||
317ac620 | 595 | void kvm_arch_reset_vcpu(CPUX86State *env) |
caa5af0f | 596 | { |
dd673288 IM |
597 | X86CPU *cpu = x86_env_get_cpu(env); |
598 | ||
e73223a5 | 599 | env->exception_injected = -1; |
0e607a80 | 600 | env->interrupt_injected = -1; |
1a5e9d2f | 601 | env->xcr0 = 1; |
ddced198 | 602 | if (kvm_irqchip_in_kernel()) { |
dd673288 | 603 | env->mp_state = cpu_is_bsp(cpu) ? KVM_MP_STATE_RUNNABLE : |
ddced198 MT |
604 | KVM_MP_STATE_UNINITIALIZED; |
605 | } else { | |
606 | env->mp_state = KVM_MP_STATE_RUNNABLE; | |
607 | } | |
caa5af0f JK |
608 | } |
609 | ||
c3a3a7d3 | 610 | static int kvm_get_supported_msrs(KVMState *s) |
05330448 | 611 | { |
75b10c43 | 612 | static int kvm_supported_msrs; |
c3a3a7d3 | 613 | int ret = 0; |
05330448 AL |
614 | |
615 | /* first time */ | |
75b10c43 | 616 | if (kvm_supported_msrs == 0) { |
05330448 AL |
617 | struct kvm_msr_list msr_list, *kvm_msr_list; |
618 | ||
75b10c43 | 619 | kvm_supported_msrs = -1; |
05330448 AL |
620 | |
621 | /* Obtain MSR list from KVM. These are the MSRs that we must | |
622 | * save/restore */ | |
4c9f7372 | 623 | msr_list.nmsrs = 0; |
c3a3a7d3 | 624 | ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, &msr_list); |
6fb6d245 | 625 | if (ret < 0 && ret != -E2BIG) { |
c3a3a7d3 | 626 | return ret; |
6fb6d245 | 627 | } |
d9db889f JK |
628 | /* Old kernel modules had a bug and could write beyond the provided |
629 | memory. Allocate at least a safe amount of 1K. */ | |
7267c094 | 630 | kvm_msr_list = g_malloc0(MAX(1024, sizeof(msr_list) + |
d9db889f JK |
631 | msr_list.nmsrs * |
632 | sizeof(msr_list.indices[0]))); | |
05330448 | 633 | |
55308450 | 634 | kvm_msr_list->nmsrs = msr_list.nmsrs; |
c3a3a7d3 | 635 | ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); |
05330448 AL |
636 | if (ret >= 0) { |
637 | int i; | |
638 | ||
639 | for (i = 0; i < kvm_msr_list->nmsrs; i++) { | |
640 | if (kvm_msr_list->indices[i] == MSR_STAR) { | |
c3a3a7d3 | 641 | has_msr_star = true; |
75b10c43 MT |
642 | continue; |
643 | } | |
644 | if (kvm_msr_list->indices[i] == MSR_VM_HSAVE_PA) { | |
c3a3a7d3 | 645 | has_msr_hsave_pa = true; |
75b10c43 | 646 | continue; |
05330448 | 647 | } |
aa82ba54 LJ |
648 | if (kvm_msr_list->indices[i] == MSR_IA32_TSCDEADLINE) { |
649 | has_msr_tsc_deadline = true; | |
650 | continue; | |
651 | } | |
21e87c46 AK |
652 | if (kvm_msr_list->indices[i] == MSR_IA32_MISC_ENABLE) { |
653 | has_msr_misc_enable = true; | |
654 | continue; | |
655 | } | |
05330448 AL |
656 | } |
657 | } | |
658 | ||
7267c094 | 659 | g_free(kvm_msr_list); |
05330448 AL |
660 | } |
661 | ||
c3a3a7d3 | 662 | return ret; |
05330448 AL |
663 | } |
664 | ||
cad1e282 | 665 | int kvm_arch_init(KVMState *s) |
20420430 | 666 | { |
39d6960a | 667 | QemuOptsList *list = qemu_find_opts("machine"); |
11076198 | 668 | uint64_t identity_base = 0xfffbc000; |
39d6960a | 669 | uint64_t shadow_mem; |
20420430 | 670 | int ret; |
25d2e361 | 671 | struct utsname utsname; |
20420430 | 672 | |
c3a3a7d3 | 673 | ret = kvm_get_supported_msrs(s); |
20420430 | 674 | if (ret < 0) { |
20420430 SY |
675 | return ret; |
676 | } | |
25d2e361 MT |
677 | |
678 | uname(&utsname); | |
679 | lm_capable_kernel = strcmp(utsname.machine, "x86_64") == 0; | |
680 | ||
4c5b10b7 | 681 | /* |
11076198 JK |
682 | * On older Intel CPUs, KVM uses vm86 mode to emulate 16-bit code directly. |
683 | * In order to use vm86 mode, an EPT identity map and a TSS are needed. | |
684 | * Since these must be part of guest physical memory, we need to allocate | |
685 | * them, both by setting their start addresses in the kernel and by | |
686 | * creating a corresponding e820 entry. We need 4 pages before the BIOS. | |
687 | * | |
688 | * Older KVM versions may not support setting the identity map base. In | |
689 | * that case we need to stick with the default, i.e. a 256K maximum BIOS | |
690 | * size. | |
4c5b10b7 | 691 | */ |
11076198 JK |
692 | if (kvm_check_extension(s, KVM_CAP_SET_IDENTITY_MAP_ADDR)) { |
693 | /* Allows up to 16M BIOSes. */ | |
694 | identity_base = 0xfeffc000; | |
695 | ||
696 | ret = kvm_vm_ioctl(s, KVM_SET_IDENTITY_MAP_ADDR, &identity_base); | |
697 | if (ret < 0) { | |
698 | return ret; | |
699 | } | |
4c5b10b7 | 700 | } |
e56ff191 | 701 | |
11076198 JK |
702 | /* Set TSS base one page after EPT identity map. */ |
703 | ret = kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, identity_base + 0x1000); | |
20420430 SY |
704 | if (ret < 0) { |
705 | return ret; | |
706 | } | |
707 | ||
11076198 JK |
708 | /* Tell fw_cfg to notify the BIOS to reserve the range. */ |
709 | ret = e820_add_entry(identity_base, 0x4000, E820_RESERVED); | |
20420430 | 710 | if (ret < 0) { |
11076198 | 711 | fprintf(stderr, "e820_add_entry() table is full\n"); |
20420430 SY |
712 | return ret; |
713 | } | |
3c85e74f | 714 | qemu_register_reset(kvm_unpoison_all, NULL); |
20420430 | 715 | |
39d6960a JK |
716 | if (!QTAILQ_EMPTY(&list->head)) { |
717 | shadow_mem = qemu_opt_get_size(QTAILQ_FIRST(&list->head), | |
718 | "kvm_shadow_mem", -1); | |
719 | if (shadow_mem != -1) { | |
720 | shadow_mem /= 4096; | |
721 | ret = kvm_vm_ioctl(s, KVM_SET_NR_MMU_PAGES, shadow_mem); | |
722 | if (ret < 0) { | |
723 | return ret; | |
724 | } | |
725 | } | |
726 | } | |
11076198 | 727 | return 0; |
05330448 | 728 | } |
b9bec74b | 729 | |
05330448 AL |
730 | static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs) |
731 | { | |
732 | lhs->selector = rhs->selector; | |
733 | lhs->base = rhs->base; | |
734 | lhs->limit = rhs->limit; | |
735 | lhs->type = 3; | |
736 | lhs->present = 1; | |
737 | lhs->dpl = 3; | |
738 | lhs->db = 0; | |
739 | lhs->s = 1; | |
740 | lhs->l = 0; | |
741 | lhs->g = 0; | |
742 | lhs->avl = 0; | |
743 | lhs->unusable = 0; | |
744 | } | |
745 | ||
746 | static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs) | |
747 | { | |
748 | unsigned flags = rhs->flags; | |
749 | lhs->selector = rhs->selector; | |
750 | lhs->base = rhs->base; | |
751 | lhs->limit = rhs->limit; | |
752 | lhs->type = (flags >> DESC_TYPE_SHIFT) & 15; | |
753 | lhs->present = (flags & DESC_P_MASK) != 0; | |
acaa7550 | 754 | lhs->dpl = (flags >> DESC_DPL_SHIFT) & 3; |
05330448 AL |
755 | lhs->db = (flags >> DESC_B_SHIFT) & 1; |
756 | lhs->s = (flags & DESC_S_MASK) != 0; | |
757 | lhs->l = (flags >> DESC_L_SHIFT) & 1; | |
758 | lhs->g = (flags & DESC_G_MASK) != 0; | |
759 | lhs->avl = (flags & DESC_AVL_MASK) != 0; | |
760 | lhs->unusable = 0; | |
7e680753 | 761 | lhs->padding = 0; |
05330448 AL |
762 | } |
763 | ||
764 | static void get_seg(SegmentCache *lhs, const struct kvm_segment *rhs) | |
765 | { | |
766 | lhs->selector = rhs->selector; | |
767 | lhs->base = rhs->base; | |
768 | lhs->limit = rhs->limit; | |
b9bec74b JK |
769 | lhs->flags = (rhs->type << DESC_TYPE_SHIFT) | |
770 | (rhs->present * DESC_P_MASK) | | |
771 | (rhs->dpl << DESC_DPL_SHIFT) | | |
772 | (rhs->db << DESC_B_SHIFT) | | |
773 | (rhs->s * DESC_S_MASK) | | |
774 | (rhs->l << DESC_L_SHIFT) | | |
775 | (rhs->g * DESC_G_MASK) | | |
776 | (rhs->avl * DESC_AVL_MASK); | |
05330448 AL |
777 | } |
778 | ||
779 | static void kvm_getput_reg(__u64 *kvm_reg, target_ulong *qemu_reg, int set) | |
780 | { | |
b9bec74b | 781 | if (set) { |
05330448 | 782 | *kvm_reg = *qemu_reg; |
b9bec74b | 783 | } else { |
05330448 | 784 | *qemu_reg = *kvm_reg; |
b9bec74b | 785 | } |
05330448 AL |
786 | } |
787 | ||
317ac620 | 788 | static int kvm_getput_regs(CPUX86State *env, int set) |
05330448 AL |
789 | { |
790 | struct kvm_regs regs; | |
791 | int ret = 0; | |
792 | ||
793 | if (!set) { | |
794 | ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s); | |
b9bec74b | 795 | if (ret < 0) { |
05330448 | 796 | return ret; |
b9bec74b | 797 | } |
05330448 AL |
798 | } |
799 | ||
800 | kvm_getput_reg(®s.rax, &env->regs[R_EAX], set); | |
801 | kvm_getput_reg(®s.rbx, &env->regs[R_EBX], set); | |
802 | kvm_getput_reg(®s.rcx, &env->regs[R_ECX], set); | |
803 | kvm_getput_reg(®s.rdx, &env->regs[R_EDX], set); | |
804 | kvm_getput_reg(®s.rsi, &env->regs[R_ESI], set); | |
805 | kvm_getput_reg(®s.rdi, &env->regs[R_EDI], set); | |
806 | kvm_getput_reg(®s.rsp, &env->regs[R_ESP], set); | |
807 | kvm_getput_reg(®s.rbp, &env->regs[R_EBP], set); | |
808 | #ifdef TARGET_X86_64 | |
809 | kvm_getput_reg(®s.r8, &env->regs[8], set); | |
810 | kvm_getput_reg(®s.r9, &env->regs[9], set); | |
811 | kvm_getput_reg(®s.r10, &env->regs[10], set); | |
812 | kvm_getput_reg(®s.r11, &env->regs[11], set); | |
813 | kvm_getput_reg(®s.r12, &env->regs[12], set); | |
814 | kvm_getput_reg(®s.r13, &env->regs[13], set); | |
815 | kvm_getput_reg(®s.r14, &env->regs[14], set); | |
816 | kvm_getput_reg(®s.r15, &env->regs[15], set); | |
817 | #endif | |
818 | ||
819 | kvm_getput_reg(®s.rflags, &env->eflags, set); | |
820 | kvm_getput_reg(®s.rip, &env->eip, set); | |
821 | ||
b9bec74b | 822 | if (set) { |
05330448 | 823 | ret = kvm_vcpu_ioctl(env, KVM_SET_REGS, ®s); |
b9bec74b | 824 | } |
05330448 AL |
825 | |
826 | return ret; | |
827 | } | |
828 | ||
317ac620 | 829 | static int kvm_put_fpu(CPUX86State *env) |
05330448 AL |
830 | { |
831 | struct kvm_fpu fpu; | |
832 | int i; | |
833 | ||
834 | memset(&fpu, 0, sizeof fpu); | |
835 | fpu.fsw = env->fpus & ~(7 << 11); | |
836 | fpu.fsw |= (env->fpstt & 7) << 11; | |
837 | fpu.fcw = env->fpuc; | |
42cc8fa6 JK |
838 | fpu.last_opcode = env->fpop; |
839 | fpu.last_ip = env->fpip; | |
840 | fpu.last_dp = env->fpdp; | |
b9bec74b JK |
841 | for (i = 0; i < 8; ++i) { |
842 | fpu.ftwx |= (!env->fptags[i]) << i; | |
843 | } | |
05330448 AL |
844 | memcpy(fpu.fpr, env->fpregs, sizeof env->fpregs); |
845 | memcpy(fpu.xmm, env->xmm_regs, sizeof env->xmm_regs); | |
846 | fpu.mxcsr = env->mxcsr; | |
847 | ||
848 | return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu); | |
849 | } | |
850 | ||
6b42494b JK |
851 | #define XSAVE_FCW_FSW 0 |
852 | #define XSAVE_FTW_FOP 1 | |
f1665b21 SY |
853 | #define XSAVE_CWD_RIP 2 |
854 | #define XSAVE_CWD_RDP 4 | |
855 | #define XSAVE_MXCSR 6 | |
856 | #define XSAVE_ST_SPACE 8 | |
857 | #define XSAVE_XMM_SPACE 40 | |
858 | #define XSAVE_XSTATE_BV 128 | |
859 | #define XSAVE_YMMH_SPACE 144 | |
f1665b21 | 860 | |
317ac620 | 861 | static int kvm_put_xsave(CPUX86State *env) |
f1665b21 | 862 | { |
fabacc0f | 863 | struct kvm_xsave* xsave = env->kvm_xsave_buf; |
42cc8fa6 | 864 | uint16_t cwd, swd, twd; |
fabacc0f | 865 | int i, r; |
f1665b21 | 866 | |
b9bec74b | 867 | if (!kvm_has_xsave()) { |
f1665b21 | 868 | return kvm_put_fpu(env); |
b9bec74b | 869 | } |
f1665b21 | 870 | |
f1665b21 | 871 | memset(xsave, 0, sizeof(struct kvm_xsave)); |
6115c0a8 | 872 | twd = 0; |
f1665b21 SY |
873 | swd = env->fpus & ~(7 << 11); |
874 | swd |= (env->fpstt & 7) << 11; | |
875 | cwd = env->fpuc; | |
b9bec74b | 876 | for (i = 0; i < 8; ++i) { |
f1665b21 | 877 | twd |= (!env->fptags[i]) << i; |
b9bec74b | 878 | } |
6b42494b JK |
879 | xsave->region[XSAVE_FCW_FSW] = (uint32_t)(swd << 16) + cwd; |
880 | xsave->region[XSAVE_FTW_FOP] = (uint32_t)(env->fpop << 16) + twd; | |
42cc8fa6 JK |
881 | memcpy(&xsave->region[XSAVE_CWD_RIP], &env->fpip, sizeof(env->fpip)); |
882 | memcpy(&xsave->region[XSAVE_CWD_RDP], &env->fpdp, sizeof(env->fpdp)); | |
f1665b21 SY |
883 | memcpy(&xsave->region[XSAVE_ST_SPACE], env->fpregs, |
884 | sizeof env->fpregs); | |
885 | memcpy(&xsave->region[XSAVE_XMM_SPACE], env->xmm_regs, | |
886 | sizeof env->xmm_regs); | |
887 | xsave->region[XSAVE_MXCSR] = env->mxcsr; | |
888 | *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV] = env->xstate_bv; | |
889 | memcpy(&xsave->region[XSAVE_YMMH_SPACE], env->ymmh_regs, | |
890 | sizeof env->ymmh_regs); | |
0f53994f | 891 | r = kvm_vcpu_ioctl(env, KVM_SET_XSAVE, xsave); |
0f53994f | 892 | return r; |
f1665b21 SY |
893 | } |
894 | ||
317ac620 | 895 | static int kvm_put_xcrs(CPUX86State *env) |
f1665b21 | 896 | { |
f1665b21 SY |
897 | struct kvm_xcrs xcrs; |
898 | ||
b9bec74b | 899 | if (!kvm_has_xcrs()) { |
f1665b21 | 900 | return 0; |
b9bec74b | 901 | } |
f1665b21 SY |
902 | |
903 | xcrs.nr_xcrs = 1; | |
904 | xcrs.flags = 0; | |
905 | xcrs.xcrs[0].xcr = 0; | |
906 | xcrs.xcrs[0].value = env->xcr0; | |
907 | return kvm_vcpu_ioctl(env, KVM_SET_XCRS, &xcrs); | |
f1665b21 SY |
908 | } |
909 | ||
317ac620 | 910 | static int kvm_put_sregs(CPUX86State *env) |
05330448 AL |
911 | { |
912 | struct kvm_sregs sregs; | |
913 | ||
0e607a80 JK |
914 | memset(sregs.interrupt_bitmap, 0, sizeof(sregs.interrupt_bitmap)); |
915 | if (env->interrupt_injected >= 0) { | |
916 | sregs.interrupt_bitmap[env->interrupt_injected / 64] |= | |
917 | (uint64_t)1 << (env->interrupt_injected % 64); | |
918 | } | |
05330448 AL |
919 | |
920 | if ((env->eflags & VM_MASK)) { | |
b9bec74b JK |
921 | set_v8086_seg(&sregs.cs, &env->segs[R_CS]); |
922 | set_v8086_seg(&sregs.ds, &env->segs[R_DS]); | |
923 | set_v8086_seg(&sregs.es, &env->segs[R_ES]); | |
924 | set_v8086_seg(&sregs.fs, &env->segs[R_FS]); | |
925 | set_v8086_seg(&sregs.gs, &env->segs[R_GS]); | |
926 | set_v8086_seg(&sregs.ss, &env->segs[R_SS]); | |
05330448 | 927 | } else { |
b9bec74b JK |
928 | set_seg(&sregs.cs, &env->segs[R_CS]); |
929 | set_seg(&sregs.ds, &env->segs[R_DS]); | |
930 | set_seg(&sregs.es, &env->segs[R_ES]); | |
931 | set_seg(&sregs.fs, &env->segs[R_FS]); | |
932 | set_seg(&sregs.gs, &env->segs[R_GS]); | |
933 | set_seg(&sregs.ss, &env->segs[R_SS]); | |
05330448 AL |
934 | } |
935 | ||
936 | set_seg(&sregs.tr, &env->tr); | |
937 | set_seg(&sregs.ldt, &env->ldt); | |
938 | ||
939 | sregs.idt.limit = env->idt.limit; | |
940 | sregs.idt.base = env->idt.base; | |
7e680753 | 941 | memset(sregs.idt.padding, 0, sizeof sregs.idt.padding); |
05330448 AL |
942 | sregs.gdt.limit = env->gdt.limit; |
943 | sregs.gdt.base = env->gdt.base; | |
7e680753 | 944 | memset(sregs.gdt.padding, 0, sizeof sregs.gdt.padding); |
05330448 AL |
945 | |
946 | sregs.cr0 = env->cr[0]; | |
947 | sregs.cr2 = env->cr[2]; | |
948 | sregs.cr3 = env->cr[3]; | |
949 | sregs.cr4 = env->cr[4]; | |
950 | ||
4a942cea BS |
951 | sregs.cr8 = cpu_get_apic_tpr(env->apic_state); |
952 | sregs.apic_base = cpu_get_apic_base(env->apic_state); | |
05330448 AL |
953 | |
954 | sregs.efer = env->efer; | |
955 | ||
956 | return kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs); | |
957 | } | |
958 | ||
959 | static void kvm_msr_entry_set(struct kvm_msr_entry *entry, | |
960 | uint32_t index, uint64_t value) | |
961 | { | |
962 | entry->index = index; | |
963 | entry->data = value; | |
964 | } | |
965 | ||
317ac620 | 966 | static int kvm_put_msrs(CPUX86State *env, int level) |
05330448 AL |
967 | { |
968 | struct { | |
969 | struct kvm_msrs info; | |
970 | struct kvm_msr_entry entries[100]; | |
971 | } msr_data; | |
972 | struct kvm_msr_entry *msrs = msr_data.entries; | |
d8da8574 | 973 | int n = 0; |
05330448 AL |
974 | |
975 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs); | |
976 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp); | |
977 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_EIP, env->sysenter_eip); | |
0c03266a | 978 | kvm_msr_entry_set(&msrs[n++], MSR_PAT, env->pat); |
c3a3a7d3 | 979 | if (has_msr_star) { |
b9bec74b JK |
980 | kvm_msr_entry_set(&msrs[n++], MSR_STAR, env->star); |
981 | } | |
c3a3a7d3 | 982 | if (has_msr_hsave_pa) { |
75b10c43 | 983 | kvm_msr_entry_set(&msrs[n++], MSR_VM_HSAVE_PA, env->vm_hsave); |
b9bec74b | 984 | } |
aa82ba54 LJ |
985 | if (has_msr_tsc_deadline) { |
986 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSCDEADLINE, env->tsc_deadline); | |
987 | } | |
21e87c46 AK |
988 | if (has_msr_misc_enable) { |
989 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_MISC_ENABLE, | |
990 | env->msr_ia32_misc_enable); | |
991 | } | |
05330448 | 992 | #ifdef TARGET_X86_64 |
25d2e361 MT |
993 | if (lm_capable_kernel) { |
994 | kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); | |
995 | kvm_msr_entry_set(&msrs[n++], MSR_KERNELGSBASE, env->kernelgsbase); | |
996 | kvm_msr_entry_set(&msrs[n++], MSR_FMASK, env->fmask); | |
997 | kvm_msr_entry_set(&msrs[n++], MSR_LSTAR, env->lstar); | |
998 | } | |
05330448 | 999 | #endif |
ea643051 | 1000 | if (level == KVM_PUT_FULL_STATE) { |
384331a6 MT |
1001 | /* |
1002 | * KVM is yet unable to synchronize TSC values of multiple VCPUs on | |
1003 | * writeback. Until this is fixed, we only write the offset to SMP | |
1004 | * guests after migration, desynchronizing the VCPUs, but avoiding | |
1005 | * huge jump-backs that would occur without any writeback at all. | |
1006 | */ | |
1007 | if (smp_cpus == 1 || env->tsc != 0) { | |
1008 | kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSC, env->tsc); | |
1009 | } | |
ff5c186b JK |
1010 | } |
1011 | /* | |
1012 | * The following paravirtual MSRs have side effects on the guest or are | |
1013 | * too heavy for normal writeback. Limit them to reset or full state | |
1014 | * updates. | |
1015 | */ | |
1016 | if (level >= KVM_PUT_RESET_STATE) { | |
ea643051 JK |
1017 | kvm_msr_entry_set(&msrs[n++], MSR_KVM_SYSTEM_TIME, |
1018 | env->system_time_msr); | |
1019 | kvm_msr_entry_set(&msrs[n++], MSR_KVM_WALL_CLOCK, env->wall_clock_msr); | |
c5999bfc JK |
1020 | if (has_msr_async_pf_en) { |
1021 | kvm_msr_entry_set(&msrs[n++], MSR_KVM_ASYNC_PF_EN, | |
1022 | env->async_pf_en_msr); | |
1023 | } | |
bc9a839d MT |
1024 | if (has_msr_pv_eoi_en) { |
1025 | kvm_msr_entry_set(&msrs[n++], MSR_KVM_PV_EOI_EN, | |
1026 | env->pv_eoi_en_msr); | |
1027 | } | |
eab70139 VR |
1028 | if (hyperv_hypercall_available()) { |
1029 | kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_GUEST_OS_ID, 0); | |
1030 | kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_HYPERCALL, 0); | |
1031 | } | |
1032 | if (hyperv_vapic_recommended()) { | |
1033 | kvm_msr_entry_set(&msrs[n++], HV_X64_MSR_APIC_ASSIST_PAGE, 0); | |
1034 | } | |
ea643051 | 1035 | } |
57780495 | 1036 | if (env->mcg_cap) { |
d8da8574 | 1037 | int i; |
b9bec74b | 1038 | |
c34d440a JK |
1039 | kvm_msr_entry_set(&msrs[n++], MSR_MCG_STATUS, env->mcg_status); |
1040 | kvm_msr_entry_set(&msrs[n++], MSR_MCG_CTL, env->mcg_ctl); | |
1041 | for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { | |
1042 | kvm_msr_entry_set(&msrs[n++], MSR_MC0_CTL + i, env->mce_banks[i]); | |
57780495 MT |
1043 | } |
1044 | } | |
1a03675d | 1045 | |
05330448 AL |
1046 | msr_data.info.nmsrs = n; |
1047 | ||
1048 | return kvm_vcpu_ioctl(env, KVM_SET_MSRS, &msr_data); | |
1049 | ||
1050 | } | |
1051 | ||
1052 | ||
317ac620 | 1053 | static int kvm_get_fpu(CPUX86State *env) |
05330448 AL |
1054 | { |
1055 | struct kvm_fpu fpu; | |
1056 | int i, ret; | |
1057 | ||
1058 | ret = kvm_vcpu_ioctl(env, KVM_GET_FPU, &fpu); | |
b9bec74b | 1059 | if (ret < 0) { |
05330448 | 1060 | return ret; |
b9bec74b | 1061 | } |
05330448 AL |
1062 | |
1063 | env->fpstt = (fpu.fsw >> 11) & 7; | |
1064 | env->fpus = fpu.fsw; | |
1065 | env->fpuc = fpu.fcw; | |
42cc8fa6 JK |
1066 | env->fpop = fpu.last_opcode; |
1067 | env->fpip = fpu.last_ip; | |
1068 | env->fpdp = fpu.last_dp; | |
b9bec74b JK |
1069 | for (i = 0; i < 8; ++i) { |
1070 | env->fptags[i] = !((fpu.ftwx >> i) & 1); | |
1071 | } | |
05330448 AL |
1072 | memcpy(env->fpregs, fpu.fpr, sizeof env->fpregs); |
1073 | memcpy(env->xmm_regs, fpu.xmm, sizeof env->xmm_regs); | |
1074 | env->mxcsr = fpu.mxcsr; | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
317ac620 | 1079 | static int kvm_get_xsave(CPUX86State *env) |
f1665b21 | 1080 | { |
fabacc0f | 1081 | struct kvm_xsave* xsave = env->kvm_xsave_buf; |
f1665b21 | 1082 | int ret, i; |
42cc8fa6 | 1083 | uint16_t cwd, swd, twd; |
f1665b21 | 1084 | |
b9bec74b | 1085 | if (!kvm_has_xsave()) { |
f1665b21 | 1086 | return kvm_get_fpu(env); |
b9bec74b | 1087 | } |
f1665b21 | 1088 | |
f1665b21 | 1089 | ret = kvm_vcpu_ioctl(env, KVM_GET_XSAVE, xsave); |
0f53994f | 1090 | if (ret < 0) { |
f1665b21 | 1091 | return ret; |
0f53994f | 1092 | } |
f1665b21 | 1093 | |
6b42494b JK |
1094 | cwd = (uint16_t)xsave->region[XSAVE_FCW_FSW]; |
1095 | swd = (uint16_t)(xsave->region[XSAVE_FCW_FSW] >> 16); | |
1096 | twd = (uint16_t)xsave->region[XSAVE_FTW_FOP]; | |
1097 | env->fpop = (uint16_t)(xsave->region[XSAVE_FTW_FOP] >> 16); | |
f1665b21 SY |
1098 | env->fpstt = (swd >> 11) & 7; |
1099 | env->fpus = swd; | |
1100 | env->fpuc = cwd; | |
b9bec74b | 1101 | for (i = 0; i < 8; ++i) { |
f1665b21 | 1102 | env->fptags[i] = !((twd >> i) & 1); |
b9bec74b | 1103 | } |
42cc8fa6 JK |
1104 | memcpy(&env->fpip, &xsave->region[XSAVE_CWD_RIP], sizeof(env->fpip)); |
1105 | memcpy(&env->fpdp, &xsave->region[XSAVE_CWD_RDP], sizeof(env->fpdp)); | |
f1665b21 SY |
1106 | env->mxcsr = xsave->region[XSAVE_MXCSR]; |
1107 | memcpy(env->fpregs, &xsave->region[XSAVE_ST_SPACE], | |
1108 | sizeof env->fpregs); | |
1109 | memcpy(env->xmm_regs, &xsave->region[XSAVE_XMM_SPACE], | |
1110 | sizeof env->xmm_regs); | |
1111 | env->xstate_bv = *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV]; | |
1112 | memcpy(env->ymmh_regs, &xsave->region[XSAVE_YMMH_SPACE], | |
1113 | sizeof env->ymmh_regs); | |
1114 | return 0; | |
f1665b21 SY |
1115 | } |
1116 | ||
317ac620 | 1117 | static int kvm_get_xcrs(CPUX86State *env) |
f1665b21 | 1118 | { |
f1665b21 SY |
1119 | int i, ret; |
1120 | struct kvm_xcrs xcrs; | |
1121 | ||
b9bec74b | 1122 | if (!kvm_has_xcrs()) { |
f1665b21 | 1123 | return 0; |
b9bec74b | 1124 | } |
f1665b21 SY |
1125 | |
1126 | ret = kvm_vcpu_ioctl(env, KVM_GET_XCRS, &xcrs); | |
b9bec74b | 1127 | if (ret < 0) { |
f1665b21 | 1128 | return ret; |
b9bec74b | 1129 | } |
f1665b21 | 1130 | |
b9bec74b | 1131 | for (i = 0; i < xcrs.nr_xcrs; i++) { |
f1665b21 SY |
1132 | /* Only support xcr0 now */ |
1133 | if (xcrs.xcrs[0].xcr == 0) { | |
1134 | env->xcr0 = xcrs.xcrs[0].value; | |
1135 | break; | |
1136 | } | |
b9bec74b | 1137 | } |
f1665b21 | 1138 | return 0; |
f1665b21 SY |
1139 | } |
1140 | ||
317ac620 | 1141 | static int kvm_get_sregs(CPUX86State *env) |
05330448 AL |
1142 | { |
1143 | struct kvm_sregs sregs; | |
1144 | uint32_t hflags; | |
0e607a80 | 1145 | int bit, i, ret; |
05330448 AL |
1146 | |
1147 | ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs); | |
b9bec74b | 1148 | if (ret < 0) { |
05330448 | 1149 | return ret; |
b9bec74b | 1150 | } |
05330448 | 1151 | |
0e607a80 JK |
1152 | /* There can only be one pending IRQ set in the bitmap at a time, so try |
1153 | to find it and save its number instead (-1 for none). */ | |
1154 | env->interrupt_injected = -1; | |
1155 | for (i = 0; i < ARRAY_SIZE(sregs.interrupt_bitmap); i++) { | |
1156 | if (sregs.interrupt_bitmap[i]) { | |
1157 | bit = ctz64(sregs.interrupt_bitmap[i]); | |
1158 | env->interrupt_injected = i * 64 + bit; | |
1159 | break; | |
1160 | } | |
1161 | } | |
05330448 AL |
1162 | |
1163 | get_seg(&env->segs[R_CS], &sregs.cs); | |
1164 | get_seg(&env->segs[R_DS], &sregs.ds); | |
1165 | get_seg(&env->segs[R_ES], &sregs.es); | |
1166 | get_seg(&env->segs[R_FS], &sregs.fs); | |
1167 | get_seg(&env->segs[R_GS], &sregs.gs); | |
1168 | get_seg(&env->segs[R_SS], &sregs.ss); | |
1169 | ||
1170 | get_seg(&env->tr, &sregs.tr); | |
1171 | get_seg(&env->ldt, &sregs.ldt); | |
1172 | ||
1173 | env->idt.limit = sregs.idt.limit; | |
1174 | env->idt.base = sregs.idt.base; | |
1175 | env->gdt.limit = sregs.gdt.limit; | |
1176 | env->gdt.base = sregs.gdt.base; | |
1177 | ||
1178 | env->cr[0] = sregs.cr0; | |
1179 | env->cr[2] = sregs.cr2; | |
1180 | env->cr[3] = sregs.cr3; | |
1181 | env->cr[4] = sregs.cr4; | |
1182 | ||
05330448 | 1183 | env->efer = sregs.efer; |
cce47516 JK |
1184 | |
1185 | /* changes to apic base and cr8/tpr are read back via kvm_arch_post_run */ | |
05330448 | 1186 | |
b9bec74b JK |
1187 | #define HFLAG_COPY_MASK \ |
1188 | ~( HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ | |
1189 | HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ | |
1190 | HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ | |
1191 | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) | |
05330448 AL |
1192 | |
1193 | hflags = (env->segs[R_CS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; | |
1194 | hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT); | |
1195 | hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) & | |
b9bec74b | 1196 | (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); |
05330448 AL |
1197 | hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); |
1198 | hflags |= (env->cr[4] & CR4_OSFXSR_MASK) << | |
b9bec74b | 1199 | (HF_OSFXSR_SHIFT - CR4_OSFXSR_SHIFT); |
05330448 AL |
1200 | |
1201 | if (env->efer & MSR_EFER_LMA) { | |
1202 | hflags |= HF_LMA_MASK; | |
1203 | } | |
1204 | ||
1205 | if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) { | |
1206 | hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; | |
1207 | } else { | |
1208 | hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> | |
b9bec74b | 1209 | (DESC_B_SHIFT - HF_CS32_SHIFT); |
05330448 | 1210 | hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> |
b9bec74b JK |
1211 | (DESC_B_SHIFT - HF_SS32_SHIFT); |
1212 | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK) || | |
1213 | !(hflags & HF_CS32_MASK)) { | |
1214 | hflags |= HF_ADDSEG_MASK; | |
1215 | } else { | |
1216 | hflags |= ((env->segs[R_DS].base | env->segs[R_ES].base | | |
1217 | env->segs[R_SS].base) != 0) << HF_ADDSEG_SHIFT; | |
1218 | } | |
05330448 AL |
1219 | } |
1220 | env->hflags = (env->hflags & HFLAG_COPY_MASK) | hflags; | |
05330448 AL |
1221 | |
1222 | return 0; | |
1223 | } | |
1224 | ||
317ac620 | 1225 | static int kvm_get_msrs(CPUX86State *env) |
05330448 AL |
1226 | { |
1227 | struct { | |
1228 | struct kvm_msrs info; | |
1229 | struct kvm_msr_entry entries[100]; | |
1230 | } msr_data; | |
1231 | struct kvm_msr_entry *msrs = msr_data.entries; | |
1232 | int ret, i, n; | |
1233 | ||
1234 | n = 0; | |
1235 | msrs[n++].index = MSR_IA32_SYSENTER_CS; | |
1236 | msrs[n++].index = MSR_IA32_SYSENTER_ESP; | |
1237 | msrs[n++].index = MSR_IA32_SYSENTER_EIP; | |
0c03266a | 1238 | msrs[n++].index = MSR_PAT; |
c3a3a7d3 | 1239 | if (has_msr_star) { |
b9bec74b JK |
1240 | msrs[n++].index = MSR_STAR; |
1241 | } | |
c3a3a7d3 | 1242 | if (has_msr_hsave_pa) { |
75b10c43 | 1243 | msrs[n++].index = MSR_VM_HSAVE_PA; |
b9bec74b | 1244 | } |
aa82ba54 LJ |
1245 | if (has_msr_tsc_deadline) { |
1246 | msrs[n++].index = MSR_IA32_TSCDEADLINE; | |
1247 | } | |
21e87c46 AK |
1248 | if (has_msr_misc_enable) { |
1249 | msrs[n++].index = MSR_IA32_MISC_ENABLE; | |
1250 | } | |
b8cc45d6 GC |
1251 | |
1252 | if (!env->tsc_valid) { | |
1253 | msrs[n++].index = MSR_IA32_TSC; | |
1354869c | 1254 | env->tsc_valid = !runstate_is_running(); |
b8cc45d6 GC |
1255 | } |
1256 | ||
05330448 | 1257 | #ifdef TARGET_X86_64 |
25d2e361 MT |
1258 | if (lm_capable_kernel) { |
1259 | msrs[n++].index = MSR_CSTAR; | |
1260 | msrs[n++].index = MSR_KERNELGSBASE; | |
1261 | msrs[n++].index = MSR_FMASK; | |
1262 | msrs[n++].index = MSR_LSTAR; | |
1263 | } | |
05330448 | 1264 | #endif |
1a03675d GC |
1265 | msrs[n++].index = MSR_KVM_SYSTEM_TIME; |
1266 | msrs[n++].index = MSR_KVM_WALL_CLOCK; | |
c5999bfc JK |
1267 | if (has_msr_async_pf_en) { |
1268 | msrs[n++].index = MSR_KVM_ASYNC_PF_EN; | |
1269 | } | |
bc9a839d MT |
1270 | if (has_msr_pv_eoi_en) { |
1271 | msrs[n++].index = MSR_KVM_PV_EOI_EN; | |
1272 | } | |
1a03675d | 1273 | |
57780495 MT |
1274 | if (env->mcg_cap) { |
1275 | msrs[n++].index = MSR_MCG_STATUS; | |
1276 | msrs[n++].index = MSR_MCG_CTL; | |
b9bec74b | 1277 | for (i = 0; i < (env->mcg_cap & 0xff) * 4; i++) { |
57780495 | 1278 | msrs[n++].index = MSR_MC0_CTL + i; |
b9bec74b | 1279 | } |
57780495 | 1280 | } |
57780495 | 1281 | |
05330448 AL |
1282 | msr_data.info.nmsrs = n; |
1283 | ret = kvm_vcpu_ioctl(env, KVM_GET_MSRS, &msr_data); | |
b9bec74b | 1284 | if (ret < 0) { |
05330448 | 1285 | return ret; |
b9bec74b | 1286 | } |
05330448 AL |
1287 | |
1288 | for (i = 0; i < ret; i++) { | |
1289 | switch (msrs[i].index) { | |
1290 | case MSR_IA32_SYSENTER_CS: | |
1291 | env->sysenter_cs = msrs[i].data; | |
1292 | break; | |
1293 | case MSR_IA32_SYSENTER_ESP: | |
1294 | env->sysenter_esp = msrs[i].data; | |
1295 | break; | |
1296 | case MSR_IA32_SYSENTER_EIP: | |
1297 | env->sysenter_eip = msrs[i].data; | |
1298 | break; | |
0c03266a JK |
1299 | case MSR_PAT: |
1300 | env->pat = msrs[i].data; | |
1301 | break; | |
05330448 AL |
1302 | case MSR_STAR: |
1303 | env->star = msrs[i].data; | |
1304 | break; | |
1305 | #ifdef TARGET_X86_64 | |
1306 | case MSR_CSTAR: | |
1307 | env->cstar = msrs[i].data; | |
1308 | break; | |
1309 | case MSR_KERNELGSBASE: | |
1310 | env->kernelgsbase = msrs[i].data; | |
1311 | break; | |
1312 | case MSR_FMASK: | |
1313 | env->fmask = msrs[i].data; | |
1314 | break; | |
1315 | case MSR_LSTAR: | |
1316 | env->lstar = msrs[i].data; | |
1317 | break; | |
1318 | #endif | |
1319 | case MSR_IA32_TSC: | |
1320 | env->tsc = msrs[i].data; | |
1321 | break; | |
aa82ba54 LJ |
1322 | case MSR_IA32_TSCDEADLINE: |
1323 | env->tsc_deadline = msrs[i].data; | |
1324 | break; | |
aa851e36 MT |
1325 | case MSR_VM_HSAVE_PA: |
1326 | env->vm_hsave = msrs[i].data; | |
1327 | break; | |
1a03675d GC |
1328 | case MSR_KVM_SYSTEM_TIME: |
1329 | env->system_time_msr = msrs[i].data; | |
1330 | break; | |
1331 | case MSR_KVM_WALL_CLOCK: | |
1332 | env->wall_clock_msr = msrs[i].data; | |
1333 | break; | |
57780495 MT |
1334 | case MSR_MCG_STATUS: |
1335 | env->mcg_status = msrs[i].data; | |
1336 | break; | |
1337 | case MSR_MCG_CTL: | |
1338 | env->mcg_ctl = msrs[i].data; | |
1339 | break; | |
21e87c46 AK |
1340 | case MSR_IA32_MISC_ENABLE: |
1341 | env->msr_ia32_misc_enable = msrs[i].data; | |
1342 | break; | |
57780495 | 1343 | default: |
57780495 MT |
1344 | if (msrs[i].index >= MSR_MC0_CTL && |
1345 | msrs[i].index < MSR_MC0_CTL + (env->mcg_cap & 0xff) * 4) { | |
1346 | env->mce_banks[msrs[i].index - MSR_MC0_CTL] = msrs[i].data; | |
57780495 | 1347 | } |
d8da8574 | 1348 | break; |
f6584ee2 GN |
1349 | case MSR_KVM_ASYNC_PF_EN: |
1350 | env->async_pf_en_msr = msrs[i].data; | |
1351 | break; | |
bc9a839d MT |
1352 | case MSR_KVM_PV_EOI_EN: |
1353 | env->pv_eoi_en_msr = msrs[i].data; | |
1354 | break; | |
05330448 AL |
1355 | } |
1356 | } | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
317ac620 | 1361 | static int kvm_put_mp_state(CPUX86State *env) |
9bdbe550 HB |
1362 | { |
1363 | struct kvm_mp_state mp_state = { .mp_state = env->mp_state }; | |
1364 | ||
1365 | return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state); | |
1366 | } | |
1367 | ||
317ac620 | 1368 | static int kvm_get_mp_state(CPUX86State *env) |
9bdbe550 HB |
1369 | { |
1370 | struct kvm_mp_state mp_state; | |
1371 | int ret; | |
1372 | ||
1373 | ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state); | |
1374 | if (ret < 0) { | |
1375 | return ret; | |
1376 | } | |
1377 | env->mp_state = mp_state.mp_state; | |
c14750e8 JK |
1378 | if (kvm_irqchip_in_kernel()) { |
1379 | env->halted = (mp_state.mp_state == KVM_MP_STATE_HALTED); | |
1380 | } | |
9bdbe550 HB |
1381 | return 0; |
1382 | } | |
1383 | ||
317ac620 | 1384 | static int kvm_get_apic(CPUX86State *env) |
680c1c6f JK |
1385 | { |
1386 | DeviceState *apic = env->apic_state; | |
1387 | struct kvm_lapic_state kapic; | |
1388 | int ret; | |
1389 | ||
3d4b2649 | 1390 | if (apic && kvm_irqchip_in_kernel()) { |
680c1c6f JK |
1391 | ret = kvm_vcpu_ioctl(env, KVM_GET_LAPIC, &kapic); |
1392 | if (ret < 0) { | |
1393 | return ret; | |
1394 | } | |
1395 | ||
1396 | kvm_get_apic_state(apic, &kapic); | |
1397 | } | |
1398 | return 0; | |
1399 | } | |
1400 | ||
317ac620 | 1401 | static int kvm_put_apic(CPUX86State *env) |
680c1c6f JK |
1402 | { |
1403 | DeviceState *apic = env->apic_state; | |
1404 | struct kvm_lapic_state kapic; | |
1405 | ||
3d4b2649 | 1406 | if (apic && kvm_irqchip_in_kernel()) { |
680c1c6f JK |
1407 | kvm_put_apic_state(apic, &kapic); |
1408 | ||
1409 | return kvm_vcpu_ioctl(env, KVM_SET_LAPIC, &kapic); | |
1410 | } | |
1411 | return 0; | |
1412 | } | |
1413 | ||
317ac620 | 1414 | static int kvm_put_vcpu_events(CPUX86State *env, int level) |
a0fb002c | 1415 | { |
a0fb002c JK |
1416 | struct kvm_vcpu_events events; |
1417 | ||
1418 | if (!kvm_has_vcpu_events()) { | |
1419 | return 0; | |
1420 | } | |
1421 | ||
31827373 JK |
1422 | events.exception.injected = (env->exception_injected >= 0); |
1423 | events.exception.nr = env->exception_injected; | |
a0fb002c JK |
1424 | events.exception.has_error_code = env->has_error_code; |
1425 | events.exception.error_code = env->error_code; | |
7e680753 | 1426 | events.exception.pad = 0; |
a0fb002c JK |
1427 | |
1428 | events.interrupt.injected = (env->interrupt_injected >= 0); | |
1429 | events.interrupt.nr = env->interrupt_injected; | |
1430 | events.interrupt.soft = env->soft_interrupt; | |
1431 | ||
1432 | events.nmi.injected = env->nmi_injected; | |
1433 | events.nmi.pending = env->nmi_pending; | |
1434 | events.nmi.masked = !!(env->hflags2 & HF2_NMI_MASK); | |
7e680753 | 1435 | events.nmi.pad = 0; |
a0fb002c JK |
1436 | |
1437 | events.sipi_vector = env->sipi_vector; | |
1438 | ||
ea643051 JK |
1439 | events.flags = 0; |
1440 | if (level >= KVM_PUT_RESET_STATE) { | |
1441 | events.flags |= | |
1442 | KVM_VCPUEVENT_VALID_NMI_PENDING | KVM_VCPUEVENT_VALID_SIPI_VECTOR; | |
1443 | } | |
aee028b9 | 1444 | |
a0fb002c | 1445 | return kvm_vcpu_ioctl(env, KVM_SET_VCPU_EVENTS, &events); |
a0fb002c JK |
1446 | } |
1447 | ||
317ac620 | 1448 | static int kvm_get_vcpu_events(CPUX86State *env) |
a0fb002c | 1449 | { |
a0fb002c JK |
1450 | struct kvm_vcpu_events events; |
1451 | int ret; | |
1452 | ||
1453 | if (!kvm_has_vcpu_events()) { | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | ret = kvm_vcpu_ioctl(env, KVM_GET_VCPU_EVENTS, &events); | |
1458 | if (ret < 0) { | |
1459 | return ret; | |
1460 | } | |
31827373 | 1461 | env->exception_injected = |
a0fb002c JK |
1462 | events.exception.injected ? events.exception.nr : -1; |
1463 | env->has_error_code = events.exception.has_error_code; | |
1464 | env->error_code = events.exception.error_code; | |
1465 | ||
1466 | env->interrupt_injected = | |
1467 | events.interrupt.injected ? events.interrupt.nr : -1; | |
1468 | env->soft_interrupt = events.interrupt.soft; | |
1469 | ||
1470 | env->nmi_injected = events.nmi.injected; | |
1471 | env->nmi_pending = events.nmi.pending; | |
1472 | if (events.nmi.masked) { | |
1473 | env->hflags2 |= HF2_NMI_MASK; | |
1474 | } else { | |
1475 | env->hflags2 &= ~HF2_NMI_MASK; | |
1476 | } | |
1477 | ||
1478 | env->sipi_vector = events.sipi_vector; | |
a0fb002c JK |
1479 | |
1480 | return 0; | |
1481 | } | |
1482 | ||
317ac620 | 1483 | static int kvm_guest_debug_workarounds(CPUX86State *env) |
b0b1d690 JK |
1484 | { |
1485 | int ret = 0; | |
b0b1d690 JK |
1486 | unsigned long reinject_trap = 0; |
1487 | ||
1488 | if (!kvm_has_vcpu_events()) { | |
1489 | if (env->exception_injected == 1) { | |
1490 | reinject_trap = KVM_GUESTDBG_INJECT_DB; | |
1491 | } else if (env->exception_injected == 3) { | |
1492 | reinject_trap = KVM_GUESTDBG_INJECT_BP; | |
1493 | } | |
1494 | env->exception_injected = -1; | |
1495 | } | |
1496 | ||
1497 | /* | |
1498 | * Kernels before KVM_CAP_X86_ROBUST_SINGLESTEP overwrote flags.TF | |
1499 | * injected via SET_GUEST_DEBUG while updating GP regs. Work around this | |
1500 | * by updating the debug state once again if single-stepping is on. | |
1501 | * Another reason to call kvm_update_guest_debug here is a pending debug | |
1502 | * trap raise by the guest. On kernels without SET_VCPU_EVENTS we have to | |
1503 | * reinject them via SET_GUEST_DEBUG. | |
1504 | */ | |
1505 | if (reinject_trap || | |
1506 | (!kvm_has_robust_singlestep() && env->singlestep_enabled)) { | |
1507 | ret = kvm_update_guest_debug(env, reinject_trap); | |
1508 | } | |
b0b1d690 JK |
1509 | return ret; |
1510 | } | |
1511 | ||
317ac620 | 1512 | static int kvm_put_debugregs(CPUX86State *env) |
ff44f1a3 | 1513 | { |
ff44f1a3 JK |
1514 | struct kvm_debugregs dbgregs; |
1515 | int i; | |
1516 | ||
1517 | if (!kvm_has_debugregs()) { | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | for (i = 0; i < 4; i++) { | |
1522 | dbgregs.db[i] = env->dr[i]; | |
1523 | } | |
1524 | dbgregs.dr6 = env->dr[6]; | |
1525 | dbgregs.dr7 = env->dr[7]; | |
1526 | dbgregs.flags = 0; | |
1527 | ||
1528 | return kvm_vcpu_ioctl(env, KVM_SET_DEBUGREGS, &dbgregs); | |
ff44f1a3 JK |
1529 | } |
1530 | ||
317ac620 | 1531 | static int kvm_get_debugregs(CPUX86State *env) |
ff44f1a3 | 1532 | { |
ff44f1a3 JK |
1533 | struct kvm_debugregs dbgregs; |
1534 | int i, ret; | |
1535 | ||
1536 | if (!kvm_has_debugregs()) { | |
1537 | return 0; | |
1538 | } | |
1539 | ||
1540 | ret = kvm_vcpu_ioctl(env, KVM_GET_DEBUGREGS, &dbgregs); | |
1541 | if (ret < 0) { | |
b9bec74b | 1542 | return ret; |
ff44f1a3 JK |
1543 | } |
1544 | for (i = 0; i < 4; i++) { | |
1545 | env->dr[i] = dbgregs.db[i]; | |
1546 | } | |
1547 | env->dr[4] = env->dr[6] = dbgregs.dr6; | |
1548 | env->dr[5] = env->dr[7] = dbgregs.dr7; | |
ff44f1a3 JK |
1549 | |
1550 | return 0; | |
1551 | } | |
1552 | ||
317ac620 | 1553 | int kvm_arch_put_registers(CPUX86State *env, int level) |
05330448 AL |
1554 | { |
1555 | int ret; | |
1556 | ||
b7680cb6 | 1557 | assert(cpu_is_stopped(env) || qemu_cpu_is_self(env)); |
dbaa07c4 | 1558 | |
05330448 | 1559 | ret = kvm_getput_regs(env, 1); |
b9bec74b | 1560 | if (ret < 0) { |
05330448 | 1561 | return ret; |
b9bec74b | 1562 | } |
f1665b21 | 1563 | ret = kvm_put_xsave(env); |
b9bec74b | 1564 | if (ret < 0) { |
f1665b21 | 1565 | return ret; |
b9bec74b | 1566 | } |
f1665b21 | 1567 | ret = kvm_put_xcrs(env); |
b9bec74b | 1568 | if (ret < 0) { |
05330448 | 1569 | return ret; |
b9bec74b | 1570 | } |
05330448 | 1571 | ret = kvm_put_sregs(env); |
b9bec74b | 1572 | if (ret < 0) { |
05330448 | 1573 | return ret; |
b9bec74b | 1574 | } |
ab443475 JK |
1575 | /* must be before kvm_put_msrs */ |
1576 | ret = kvm_inject_mce_oldstyle(env); | |
1577 | if (ret < 0) { | |
1578 | return ret; | |
1579 | } | |
ea643051 | 1580 | ret = kvm_put_msrs(env, level); |
b9bec74b | 1581 | if (ret < 0) { |
05330448 | 1582 | return ret; |
b9bec74b | 1583 | } |
ea643051 JK |
1584 | if (level >= KVM_PUT_RESET_STATE) { |
1585 | ret = kvm_put_mp_state(env); | |
b9bec74b | 1586 | if (ret < 0) { |
ea643051 | 1587 | return ret; |
b9bec74b | 1588 | } |
680c1c6f JK |
1589 | ret = kvm_put_apic(env); |
1590 | if (ret < 0) { | |
1591 | return ret; | |
1592 | } | |
ea643051 | 1593 | } |
ea643051 | 1594 | ret = kvm_put_vcpu_events(env, level); |
b9bec74b | 1595 | if (ret < 0) { |
a0fb002c | 1596 | return ret; |
b9bec74b | 1597 | } |
0d75a9ec | 1598 | ret = kvm_put_debugregs(env); |
b9bec74b | 1599 | if (ret < 0) { |
b0b1d690 | 1600 | return ret; |
b9bec74b | 1601 | } |
b0b1d690 JK |
1602 | /* must be last */ |
1603 | ret = kvm_guest_debug_workarounds(env); | |
b9bec74b | 1604 | if (ret < 0) { |
ff44f1a3 | 1605 | return ret; |
b9bec74b | 1606 | } |
05330448 AL |
1607 | return 0; |
1608 | } | |
1609 | ||
317ac620 | 1610 | int kvm_arch_get_registers(CPUX86State *env) |
05330448 AL |
1611 | { |
1612 | int ret; | |
1613 | ||
b7680cb6 | 1614 | assert(cpu_is_stopped(env) || qemu_cpu_is_self(env)); |
dbaa07c4 | 1615 | |
05330448 | 1616 | ret = kvm_getput_regs(env, 0); |
b9bec74b | 1617 | if (ret < 0) { |
05330448 | 1618 | return ret; |
b9bec74b | 1619 | } |
f1665b21 | 1620 | ret = kvm_get_xsave(env); |
b9bec74b | 1621 | if (ret < 0) { |
f1665b21 | 1622 | return ret; |
b9bec74b | 1623 | } |
f1665b21 | 1624 | ret = kvm_get_xcrs(env); |
b9bec74b | 1625 | if (ret < 0) { |
05330448 | 1626 | return ret; |
b9bec74b | 1627 | } |
05330448 | 1628 | ret = kvm_get_sregs(env); |
b9bec74b | 1629 | if (ret < 0) { |
05330448 | 1630 | return ret; |
b9bec74b | 1631 | } |
05330448 | 1632 | ret = kvm_get_msrs(env); |
b9bec74b | 1633 | if (ret < 0) { |
05330448 | 1634 | return ret; |
b9bec74b | 1635 | } |
5a2e3c2e | 1636 | ret = kvm_get_mp_state(env); |
b9bec74b | 1637 | if (ret < 0) { |
5a2e3c2e | 1638 | return ret; |
b9bec74b | 1639 | } |
680c1c6f JK |
1640 | ret = kvm_get_apic(env); |
1641 | if (ret < 0) { | |
1642 | return ret; | |
1643 | } | |
a0fb002c | 1644 | ret = kvm_get_vcpu_events(env); |
b9bec74b | 1645 | if (ret < 0) { |
a0fb002c | 1646 | return ret; |
b9bec74b | 1647 | } |
ff44f1a3 | 1648 | ret = kvm_get_debugregs(env); |
b9bec74b | 1649 | if (ret < 0) { |
ff44f1a3 | 1650 | return ret; |
b9bec74b | 1651 | } |
05330448 AL |
1652 | return 0; |
1653 | } | |
1654 | ||
317ac620 | 1655 | void kvm_arch_pre_run(CPUX86State *env, struct kvm_run *run) |
05330448 | 1656 | { |
ce377af3 JK |
1657 | int ret; |
1658 | ||
276ce815 LJ |
1659 | /* Inject NMI */ |
1660 | if (env->interrupt_request & CPU_INTERRUPT_NMI) { | |
1661 | env->interrupt_request &= ~CPU_INTERRUPT_NMI; | |
1662 | DPRINTF("injected NMI\n"); | |
ce377af3 JK |
1663 | ret = kvm_vcpu_ioctl(env, KVM_NMI); |
1664 | if (ret < 0) { | |
1665 | fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n", | |
1666 | strerror(-ret)); | |
1667 | } | |
276ce815 LJ |
1668 | } |
1669 | ||
db1669bc | 1670 | if (!kvm_irqchip_in_kernel()) { |
d362e757 JK |
1671 | /* Force the VCPU out of its inner loop to process any INIT requests |
1672 | * or pending TPR access reports. */ | |
1673 | if (env->interrupt_request & | |
1674 | (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) { | |
db1669bc | 1675 | env->exit_request = 1; |
05330448 | 1676 | } |
05330448 | 1677 | |
db1669bc JK |
1678 | /* Try to inject an interrupt if the guest can accept it */ |
1679 | if (run->ready_for_interrupt_injection && | |
1680 | (env->interrupt_request & CPU_INTERRUPT_HARD) && | |
1681 | (env->eflags & IF_MASK)) { | |
1682 | int irq; | |
1683 | ||
1684 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; | |
1685 | irq = cpu_get_pic_interrupt(env); | |
1686 | if (irq >= 0) { | |
1687 | struct kvm_interrupt intr; | |
1688 | ||
1689 | intr.irq = irq; | |
db1669bc | 1690 | DPRINTF("injected interrupt %d\n", irq); |
ce377af3 JK |
1691 | ret = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr); |
1692 | if (ret < 0) { | |
1693 | fprintf(stderr, | |
1694 | "KVM: injection failed, interrupt lost (%s)\n", | |
1695 | strerror(-ret)); | |
1696 | } | |
db1669bc JK |
1697 | } |
1698 | } | |
05330448 | 1699 | |
db1669bc JK |
1700 | /* If we have an interrupt but the guest is not ready to receive an |
1701 | * interrupt, request an interrupt window exit. This will | |
1702 | * cause a return to userspace as soon as the guest is ready to | |
1703 | * receive interrupts. */ | |
1704 | if ((env->interrupt_request & CPU_INTERRUPT_HARD)) { | |
1705 | run->request_interrupt_window = 1; | |
1706 | } else { | |
1707 | run->request_interrupt_window = 0; | |
1708 | } | |
1709 | ||
1710 | DPRINTF("setting tpr\n"); | |
1711 | run->cr8 = cpu_get_apic_tpr(env->apic_state); | |
1712 | } | |
05330448 AL |
1713 | } |
1714 | ||
317ac620 | 1715 | void kvm_arch_post_run(CPUX86State *env, struct kvm_run *run) |
05330448 | 1716 | { |
b9bec74b | 1717 | if (run->if_flag) { |
05330448 | 1718 | env->eflags |= IF_MASK; |
b9bec74b | 1719 | } else { |
05330448 | 1720 | env->eflags &= ~IF_MASK; |
b9bec74b | 1721 | } |
4a942cea BS |
1722 | cpu_set_apic_tpr(env->apic_state, run->cr8); |
1723 | cpu_set_apic_base(env->apic_state, run->apic_base); | |
05330448 AL |
1724 | } |
1725 | ||
317ac620 | 1726 | int kvm_arch_process_async_events(CPUX86State *env) |
0af691d7 | 1727 | { |
232fc23b AF |
1728 | X86CPU *cpu = x86_env_get_cpu(env); |
1729 | ||
ab443475 JK |
1730 | if (env->interrupt_request & CPU_INTERRUPT_MCE) { |
1731 | /* We must not raise CPU_INTERRUPT_MCE if it's not supported. */ | |
1732 | assert(env->mcg_cap); | |
1733 | ||
1734 | env->interrupt_request &= ~CPU_INTERRUPT_MCE; | |
1735 | ||
1736 | kvm_cpu_synchronize_state(env); | |
1737 | ||
1738 | if (env->exception_injected == EXCP08_DBLE) { | |
1739 | /* this means triple fault */ | |
1740 | qemu_system_reset_request(); | |
1741 | env->exit_request = 1; | |
1742 | return 0; | |
1743 | } | |
1744 | env->exception_injected = EXCP12_MCHK; | |
1745 | env->has_error_code = 0; | |
1746 | ||
1747 | env->halted = 0; | |
1748 | if (kvm_irqchip_in_kernel() && env->mp_state == KVM_MP_STATE_HALTED) { | |
1749 | env->mp_state = KVM_MP_STATE_RUNNABLE; | |
1750 | } | |
1751 | } | |
1752 | ||
db1669bc JK |
1753 | if (kvm_irqchip_in_kernel()) { |
1754 | return 0; | |
1755 | } | |
1756 | ||
5d62c43a JK |
1757 | if (env->interrupt_request & CPU_INTERRUPT_POLL) { |
1758 | env->interrupt_request &= ~CPU_INTERRUPT_POLL; | |
1759 | apic_poll_irq(env->apic_state); | |
1760 | } | |
4601f7b0 JK |
1761 | if (((env->interrupt_request & CPU_INTERRUPT_HARD) && |
1762 | (env->eflags & IF_MASK)) || | |
1763 | (env->interrupt_request & CPU_INTERRUPT_NMI)) { | |
6792a57b JK |
1764 | env->halted = 0; |
1765 | } | |
0af691d7 MT |
1766 | if (env->interrupt_request & CPU_INTERRUPT_INIT) { |
1767 | kvm_cpu_synchronize_state(env); | |
232fc23b | 1768 | do_cpu_init(cpu); |
0af691d7 | 1769 | } |
0af691d7 MT |
1770 | if (env->interrupt_request & CPU_INTERRUPT_SIPI) { |
1771 | kvm_cpu_synchronize_state(env); | |
232fc23b | 1772 | do_cpu_sipi(cpu); |
0af691d7 | 1773 | } |
d362e757 JK |
1774 | if (env->interrupt_request & CPU_INTERRUPT_TPR) { |
1775 | env->interrupt_request &= ~CPU_INTERRUPT_TPR; | |
1776 | kvm_cpu_synchronize_state(env); | |
1777 | apic_handle_tpr_access_report(env->apic_state, env->eip, | |
1778 | env->tpr_access_type); | |
1779 | } | |
0af691d7 MT |
1780 | |
1781 | return env->halted; | |
1782 | } | |
1783 | ||
317ac620 | 1784 | static int kvm_handle_halt(CPUX86State *env) |
05330448 AL |
1785 | { |
1786 | if (!((env->interrupt_request & CPU_INTERRUPT_HARD) && | |
1787 | (env->eflags & IF_MASK)) && | |
1788 | !(env->interrupt_request & CPU_INTERRUPT_NMI)) { | |
1789 | env->halted = 1; | |
bb4ea393 | 1790 | return EXCP_HLT; |
05330448 AL |
1791 | } |
1792 | ||
bb4ea393 | 1793 | return 0; |
05330448 AL |
1794 | } |
1795 | ||
317ac620 | 1796 | static int kvm_handle_tpr_access(CPUX86State *env) |
d362e757 JK |
1797 | { |
1798 | struct kvm_run *run = env->kvm_run; | |
1799 | ||
1800 | apic_handle_tpr_access_report(env->apic_state, run->tpr_access.rip, | |
1801 | run->tpr_access.is_write ? TPR_ACCESS_WRITE | |
1802 | : TPR_ACCESS_READ); | |
1803 | return 1; | |
1804 | } | |
1805 | ||
317ac620 | 1806 | int kvm_arch_insert_sw_breakpoint(CPUX86State *env, struct kvm_sw_breakpoint *bp) |
e22a25c9 | 1807 | { |
38972938 | 1808 | static const uint8_t int3 = 0xcc; |
64bf3f4e | 1809 | |
e22a25c9 | 1810 | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) || |
b9bec74b | 1811 | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1)) { |
e22a25c9 | 1812 | return -EINVAL; |
b9bec74b | 1813 | } |
e22a25c9 AL |
1814 | return 0; |
1815 | } | |
1816 | ||
317ac620 | 1817 | int kvm_arch_remove_sw_breakpoint(CPUX86State *env, struct kvm_sw_breakpoint *bp) |
e22a25c9 AL |
1818 | { |
1819 | uint8_t int3; | |
1820 | ||
1821 | if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc || | |
b9bec74b | 1822 | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) { |
e22a25c9 | 1823 | return -EINVAL; |
b9bec74b | 1824 | } |
e22a25c9 AL |
1825 | return 0; |
1826 | } | |
1827 | ||
1828 | static struct { | |
1829 | target_ulong addr; | |
1830 | int len; | |
1831 | int type; | |
1832 | } hw_breakpoint[4]; | |
1833 | ||
1834 | static int nb_hw_breakpoint; | |
1835 | ||
1836 | static int find_hw_breakpoint(target_ulong addr, int len, int type) | |
1837 | { | |
1838 | int n; | |
1839 | ||
b9bec74b | 1840 | for (n = 0; n < nb_hw_breakpoint; n++) { |
e22a25c9 | 1841 | if (hw_breakpoint[n].addr == addr && hw_breakpoint[n].type == type && |
b9bec74b | 1842 | (hw_breakpoint[n].len == len || len == -1)) { |
e22a25c9 | 1843 | return n; |
b9bec74b JK |
1844 | } |
1845 | } | |
e22a25c9 AL |
1846 | return -1; |
1847 | } | |
1848 | ||
1849 | int kvm_arch_insert_hw_breakpoint(target_ulong addr, | |
1850 | target_ulong len, int type) | |
1851 | { | |
1852 | switch (type) { | |
1853 | case GDB_BREAKPOINT_HW: | |
1854 | len = 1; | |
1855 | break; | |
1856 | case GDB_WATCHPOINT_WRITE: | |
1857 | case GDB_WATCHPOINT_ACCESS: | |
1858 | switch (len) { | |
1859 | case 1: | |
1860 | break; | |
1861 | case 2: | |
1862 | case 4: | |
1863 | case 8: | |
b9bec74b | 1864 | if (addr & (len - 1)) { |
e22a25c9 | 1865 | return -EINVAL; |
b9bec74b | 1866 | } |
e22a25c9 AL |
1867 | break; |
1868 | default: | |
1869 | return -EINVAL; | |
1870 | } | |
1871 | break; | |
1872 | default: | |
1873 | return -ENOSYS; | |
1874 | } | |
1875 | ||
b9bec74b | 1876 | if (nb_hw_breakpoint == 4) { |
e22a25c9 | 1877 | return -ENOBUFS; |
b9bec74b JK |
1878 | } |
1879 | if (find_hw_breakpoint(addr, len, type) >= 0) { | |
e22a25c9 | 1880 | return -EEXIST; |
b9bec74b | 1881 | } |
e22a25c9 AL |
1882 | hw_breakpoint[nb_hw_breakpoint].addr = addr; |
1883 | hw_breakpoint[nb_hw_breakpoint].len = len; | |
1884 | hw_breakpoint[nb_hw_breakpoint].type = type; | |
1885 | nb_hw_breakpoint++; | |
1886 | ||
1887 | return 0; | |
1888 | } | |
1889 | ||
1890 | int kvm_arch_remove_hw_breakpoint(target_ulong addr, | |
1891 | target_ulong len, int type) | |
1892 | { | |
1893 | int n; | |
1894 | ||
1895 | n = find_hw_breakpoint(addr, (type == GDB_BREAKPOINT_HW) ? 1 : len, type); | |
b9bec74b | 1896 | if (n < 0) { |
e22a25c9 | 1897 | return -ENOENT; |
b9bec74b | 1898 | } |
e22a25c9 AL |
1899 | nb_hw_breakpoint--; |
1900 | hw_breakpoint[n] = hw_breakpoint[nb_hw_breakpoint]; | |
1901 | ||
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | void kvm_arch_remove_all_hw_breakpoints(void) | |
1906 | { | |
1907 | nb_hw_breakpoint = 0; | |
1908 | } | |
1909 | ||
1910 | static CPUWatchpoint hw_watchpoint; | |
1911 | ||
f2574737 | 1912 | static int kvm_handle_debug(struct kvm_debug_exit_arch *arch_info) |
e22a25c9 | 1913 | { |
f2574737 | 1914 | int ret = 0; |
e22a25c9 AL |
1915 | int n; |
1916 | ||
1917 | if (arch_info->exception == 1) { | |
1918 | if (arch_info->dr6 & (1 << 14)) { | |
b9bec74b | 1919 | if (cpu_single_env->singlestep_enabled) { |
f2574737 | 1920 | ret = EXCP_DEBUG; |
b9bec74b | 1921 | } |
e22a25c9 | 1922 | } else { |
b9bec74b JK |
1923 | for (n = 0; n < 4; n++) { |
1924 | if (arch_info->dr6 & (1 << n)) { | |
e22a25c9 AL |
1925 | switch ((arch_info->dr7 >> (16 + n*4)) & 0x3) { |
1926 | case 0x0: | |
f2574737 | 1927 | ret = EXCP_DEBUG; |
e22a25c9 AL |
1928 | break; |
1929 | case 0x1: | |
f2574737 | 1930 | ret = EXCP_DEBUG; |
e22a25c9 AL |
1931 | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1932 | hw_watchpoint.vaddr = hw_breakpoint[n].addr; | |
1933 | hw_watchpoint.flags = BP_MEM_WRITE; | |
1934 | break; | |
1935 | case 0x3: | |
f2574737 | 1936 | ret = EXCP_DEBUG; |
e22a25c9 AL |
1937 | cpu_single_env->watchpoint_hit = &hw_watchpoint; |
1938 | hw_watchpoint.vaddr = hw_breakpoint[n].addr; | |
1939 | hw_watchpoint.flags = BP_MEM_ACCESS; | |
1940 | break; | |
1941 | } | |
b9bec74b JK |
1942 | } |
1943 | } | |
e22a25c9 | 1944 | } |
b9bec74b | 1945 | } else if (kvm_find_sw_breakpoint(cpu_single_env, arch_info->pc)) { |
f2574737 | 1946 | ret = EXCP_DEBUG; |
b9bec74b | 1947 | } |
f2574737 | 1948 | if (ret == 0) { |
b0b1d690 JK |
1949 | cpu_synchronize_state(cpu_single_env); |
1950 | assert(cpu_single_env->exception_injected == -1); | |
1951 | ||
f2574737 | 1952 | /* pass to guest */ |
b0b1d690 JK |
1953 | cpu_single_env->exception_injected = arch_info->exception; |
1954 | cpu_single_env->has_error_code = 0; | |
1955 | } | |
e22a25c9 | 1956 | |
f2574737 | 1957 | return ret; |
e22a25c9 AL |
1958 | } |
1959 | ||
317ac620 | 1960 | void kvm_arch_update_guest_debug(CPUX86State *env, struct kvm_guest_debug *dbg) |
e22a25c9 AL |
1961 | { |
1962 | const uint8_t type_code[] = { | |
1963 | [GDB_BREAKPOINT_HW] = 0x0, | |
1964 | [GDB_WATCHPOINT_WRITE] = 0x1, | |
1965 | [GDB_WATCHPOINT_ACCESS] = 0x3 | |
1966 | }; | |
1967 | const uint8_t len_code[] = { | |
1968 | [1] = 0x0, [2] = 0x1, [4] = 0x3, [8] = 0x2 | |
1969 | }; | |
1970 | int n; | |
1971 | ||
b9bec74b | 1972 | if (kvm_sw_breakpoints_active(env)) { |
e22a25c9 | 1973 | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; |
b9bec74b | 1974 | } |
e22a25c9 AL |
1975 | if (nb_hw_breakpoint > 0) { |
1976 | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; | |
1977 | dbg->arch.debugreg[7] = 0x0600; | |
1978 | for (n = 0; n < nb_hw_breakpoint; n++) { | |
1979 | dbg->arch.debugreg[n] = hw_breakpoint[n].addr; | |
1980 | dbg->arch.debugreg[7] |= (2 << (n * 2)) | | |
1981 | (type_code[hw_breakpoint[n].type] << (16 + n*4)) | | |
95c077c9 | 1982 | ((uint32_t)len_code[hw_breakpoint[n].len] << (18 + n*4)); |
e22a25c9 AL |
1983 | } |
1984 | } | |
1985 | } | |
4513d923 | 1986 | |
2a4dac83 JK |
1987 | static bool host_supports_vmx(void) |
1988 | { | |
1989 | uint32_t ecx, unused; | |
1990 | ||
1991 | host_cpuid(1, 0, &unused, &unused, &ecx, &unused); | |
1992 | return ecx & CPUID_EXT_VMX; | |
1993 | } | |
1994 | ||
1995 | #define VMX_INVALID_GUEST_STATE 0x80000021 | |
1996 | ||
317ac620 | 1997 | int kvm_arch_handle_exit(CPUX86State *env, struct kvm_run *run) |
2a4dac83 JK |
1998 | { |
1999 | uint64_t code; | |
2000 | int ret; | |
2001 | ||
2002 | switch (run->exit_reason) { | |
2003 | case KVM_EXIT_HLT: | |
2004 | DPRINTF("handle_hlt\n"); | |
2005 | ret = kvm_handle_halt(env); | |
2006 | break; | |
2007 | case KVM_EXIT_SET_TPR: | |
2008 | ret = 0; | |
2009 | break; | |
d362e757 JK |
2010 | case KVM_EXIT_TPR_ACCESS: |
2011 | ret = kvm_handle_tpr_access(env); | |
2012 | break; | |
2a4dac83 JK |
2013 | case KVM_EXIT_FAIL_ENTRY: |
2014 | code = run->fail_entry.hardware_entry_failure_reason; | |
2015 | fprintf(stderr, "KVM: entry failed, hardware error 0x%" PRIx64 "\n", | |
2016 | code); | |
2017 | if (host_supports_vmx() && code == VMX_INVALID_GUEST_STATE) { | |
2018 | fprintf(stderr, | |
12619721 | 2019 | "\nIf you're running a guest on an Intel machine without " |
2a4dac83 JK |
2020 | "unrestricted mode\n" |
2021 | "support, the failure can be most likely due to the guest " | |
2022 | "entering an invalid\n" | |
2023 | "state for Intel VT. For example, the guest maybe running " | |
2024 | "in big real mode\n" | |
2025 | "which is not supported on less recent Intel processors." | |
2026 | "\n\n"); | |
2027 | } | |
2028 | ret = -1; | |
2029 | break; | |
2030 | case KVM_EXIT_EXCEPTION: | |
2031 | fprintf(stderr, "KVM: exception %d exit (error code 0x%x)\n", | |
2032 | run->ex.exception, run->ex.error_code); | |
2033 | ret = -1; | |
2034 | break; | |
f2574737 JK |
2035 | case KVM_EXIT_DEBUG: |
2036 | DPRINTF("kvm_exit_debug\n"); | |
2037 | ret = kvm_handle_debug(&run->debug.arch); | |
2038 | break; | |
2a4dac83 JK |
2039 | default: |
2040 | fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); | |
2041 | ret = -1; | |
2042 | break; | |
2043 | } | |
2044 | ||
2045 | return ret; | |
2046 | } | |
2047 | ||
317ac620 | 2048 | bool kvm_arch_stop_on_emulation_error(CPUX86State *env) |
4513d923 | 2049 | { |
d1f86636 | 2050 | kvm_cpu_synchronize_state(env); |
b9bec74b JK |
2051 | return !(env->cr[0] & CR0_PE_MASK) || |
2052 | ((env->segs[R_CS].selector & 3) != 3); | |
4513d923 | 2053 | } |
84b058d7 JK |
2054 | |
2055 | void kvm_arch_init_irq_routing(KVMState *s) | |
2056 | { | |
2057 | if (!kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) { | |
2058 | /* If kernel can't do irq routing, interrupt source | |
2059 | * override 0->2 cannot be set up as required by HPET. | |
2060 | * So we have to disable it. | |
2061 | */ | |
2062 | no_hpet = 1; | |
2063 | } | |
cc7e0ddf | 2064 | /* We know at this point that we're using the in-kernel |
614e41bc | 2065 | * irqchip, so we can use irqfds, and on x86 we know |
f3e1bed8 | 2066 | * we can use msi via irqfd and GSI routing. |
cc7e0ddf PM |
2067 | */ |
2068 | kvm_irqfds_allowed = true; | |
614e41bc | 2069 | kvm_msi_via_irqfd_allowed = true; |
f3e1bed8 | 2070 | kvm_gsi_routing_allowed = true; |
84b058d7 | 2071 | } |
b139bd30 JK |
2072 | |
2073 | /* Classic KVM device assignment interface. Will remain x86 only. */ | |
2074 | int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr, | |
2075 | uint32_t flags, uint32_t *dev_id) | |
2076 | { | |
2077 | struct kvm_assigned_pci_dev dev_data = { | |
2078 | .segnr = dev_addr->domain, | |
2079 | .busnr = dev_addr->bus, | |
2080 | .devfn = PCI_DEVFN(dev_addr->slot, dev_addr->function), | |
2081 | .flags = flags, | |
2082 | }; | |
2083 | int ret; | |
2084 | ||
2085 | dev_data.assigned_dev_id = | |
2086 | (dev_addr->domain << 16) | (dev_addr->bus << 8) | dev_data.devfn; | |
2087 | ||
2088 | ret = kvm_vm_ioctl(s, KVM_ASSIGN_PCI_DEVICE, &dev_data); | |
2089 | if (ret < 0) { | |
2090 | return ret; | |
2091 | } | |
2092 | ||
2093 | *dev_id = dev_data.assigned_dev_id; | |
2094 | ||
2095 | return 0; | |
2096 | } | |
2097 | ||
2098 | int kvm_device_pci_deassign(KVMState *s, uint32_t dev_id) | |
2099 | { | |
2100 | struct kvm_assigned_pci_dev dev_data = { | |
2101 | .assigned_dev_id = dev_id, | |
2102 | }; | |
2103 | ||
2104 | return kvm_vm_ioctl(s, KVM_DEASSIGN_PCI_DEVICE, &dev_data); | |
2105 | } | |
2106 | ||
2107 | static int kvm_assign_irq_internal(KVMState *s, uint32_t dev_id, | |
2108 | uint32_t irq_type, uint32_t guest_irq) | |
2109 | { | |
2110 | struct kvm_assigned_irq assigned_irq = { | |
2111 | .assigned_dev_id = dev_id, | |
2112 | .guest_irq = guest_irq, | |
2113 | .flags = irq_type, | |
2114 | }; | |
2115 | ||
2116 | if (kvm_check_extension(s, KVM_CAP_ASSIGN_DEV_IRQ)) { | |
2117 | return kvm_vm_ioctl(s, KVM_ASSIGN_DEV_IRQ, &assigned_irq); | |
2118 | } else { | |
2119 | return kvm_vm_ioctl(s, KVM_ASSIGN_IRQ, &assigned_irq); | |
2120 | } | |
2121 | } | |
2122 | ||
2123 | int kvm_device_intx_assign(KVMState *s, uint32_t dev_id, bool use_host_msi, | |
2124 | uint32_t guest_irq) | |
2125 | { | |
2126 | uint32_t irq_type = KVM_DEV_IRQ_GUEST_INTX | | |
2127 | (use_host_msi ? KVM_DEV_IRQ_HOST_MSI : KVM_DEV_IRQ_HOST_INTX); | |
2128 | ||
2129 | return kvm_assign_irq_internal(s, dev_id, irq_type, guest_irq); | |
2130 | } | |
2131 | ||
2132 | int kvm_device_intx_set_mask(KVMState *s, uint32_t dev_id, bool masked) | |
2133 | { | |
2134 | struct kvm_assigned_pci_dev dev_data = { | |
2135 | .assigned_dev_id = dev_id, | |
2136 | .flags = masked ? KVM_DEV_ASSIGN_MASK_INTX : 0, | |
2137 | }; | |
2138 | ||
2139 | return kvm_vm_ioctl(s, KVM_ASSIGN_SET_INTX_MASK, &dev_data); | |
2140 | } | |
2141 | ||
2142 | static int kvm_deassign_irq_internal(KVMState *s, uint32_t dev_id, | |
2143 | uint32_t type) | |
2144 | { | |
2145 | struct kvm_assigned_irq assigned_irq = { | |
2146 | .assigned_dev_id = dev_id, | |
2147 | .flags = type, | |
2148 | }; | |
2149 | ||
2150 | return kvm_vm_ioctl(s, KVM_DEASSIGN_DEV_IRQ, &assigned_irq); | |
2151 | } | |
2152 | ||
2153 | int kvm_device_intx_deassign(KVMState *s, uint32_t dev_id, bool use_host_msi) | |
2154 | { | |
2155 | return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_INTX | | |
2156 | (use_host_msi ? KVM_DEV_IRQ_HOST_MSI : KVM_DEV_IRQ_HOST_INTX)); | |
2157 | } | |
2158 | ||
2159 | int kvm_device_msi_assign(KVMState *s, uint32_t dev_id, int virq) | |
2160 | { | |
2161 | return kvm_assign_irq_internal(s, dev_id, KVM_DEV_IRQ_HOST_MSI | | |
2162 | KVM_DEV_IRQ_GUEST_MSI, virq); | |
2163 | } | |
2164 | ||
2165 | int kvm_device_msi_deassign(KVMState *s, uint32_t dev_id) | |
2166 | { | |
2167 | return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSI | | |
2168 | KVM_DEV_IRQ_HOST_MSI); | |
2169 | } | |
2170 | ||
2171 | bool kvm_device_msix_supported(KVMState *s) | |
2172 | { | |
2173 | /* The kernel lacks a corresponding KVM_CAP, so we probe by calling | |
2174 | * KVM_ASSIGN_SET_MSIX_NR with an invalid parameter. */ | |
2175 | return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_NR, NULL) == -EFAULT; | |
2176 | } | |
2177 | ||
2178 | int kvm_device_msix_init_vectors(KVMState *s, uint32_t dev_id, | |
2179 | uint32_t nr_vectors) | |
2180 | { | |
2181 | struct kvm_assigned_msix_nr msix_nr = { | |
2182 | .assigned_dev_id = dev_id, | |
2183 | .entry_nr = nr_vectors, | |
2184 | }; | |
2185 | ||
2186 | return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_NR, &msix_nr); | |
2187 | } | |
2188 | ||
2189 | int kvm_device_msix_set_vector(KVMState *s, uint32_t dev_id, uint32_t vector, | |
2190 | int virq) | |
2191 | { | |
2192 | struct kvm_assigned_msix_entry msix_entry = { | |
2193 | .assigned_dev_id = dev_id, | |
2194 | .gsi = virq, | |
2195 | .entry = vector, | |
2196 | }; | |
2197 | ||
2198 | return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_ENTRY, &msix_entry); | |
2199 | } | |
2200 | ||
2201 | int kvm_device_msix_assign(KVMState *s, uint32_t dev_id) | |
2202 | { | |
2203 | return kvm_assign_irq_internal(s, dev_id, KVM_DEV_IRQ_HOST_MSIX | | |
2204 | KVM_DEV_IRQ_GUEST_MSIX, 0); | |
2205 | } | |
2206 | ||
2207 | int kvm_device_msix_deassign(KVMState *s, uint32_t dev_id) | |
2208 | { | |
2209 | return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSIX | | |
2210 | KVM_DEV_IRQ_HOST_MSIX); | |
2211 | } |