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05330448 AL |
1 | /* |
2 | * QEMU KVM support | |
3 | * | |
4 | * Copyright IBM, Corp. 2008 | |
5832d1f2 | 5 | * Red Hat, Inc. 2008 |
05330448 AL |
6 | * |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com> | |
5832d1f2 | 9 | * Glauber Costa <gcosta@redhat.com> |
05330448 AL |
10 | * |
11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
12 | * See the COPYING file in the top-level directory. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <sys/types.h> | |
17 | #include <sys/ioctl.h> | |
18 | #include <sys/mman.h> | |
984b5181 | 19 | #include <stdarg.h> |
05330448 AL |
20 | |
21 | #include <linux/kvm.h> | |
22 | ||
23 | #include "qemu-common.h" | |
85199474 | 24 | #include "qemu-barrier.h" |
05330448 | 25 | #include "sysemu.h" |
d33a1810 | 26 | #include "hw/hw.h" |
e22a25c9 | 27 | #include "gdbstub.h" |
05330448 AL |
28 | #include "kvm.h" |
29 | ||
f65ed4c1 AL |
30 | /* KVM uses PAGE_SIZE in it's definition of COALESCED_MMIO_MAX */ |
31 | #define PAGE_SIZE TARGET_PAGE_SIZE | |
32 | ||
05330448 AL |
33 | //#define DEBUG_KVM |
34 | ||
35 | #ifdef DEBUG_KVM | |
36 | #define dprintf(fmt, ...) \ | |
37 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) | |
38 | #else | |
39 | #define dprintf(fmt, ...) \ | |
40 | do { } while (0) | |
41 | #endif | |
42 | ||
34fc643f AL |
43 | typedef struct KVMSlot |
44 | { | |
c227f099 AL |
45 | target_phys_addr_t start_addr; |
46 | ram_addr_t memory_size; | |
47 | ram_addr_t phys_offset; | |
34fc643f AL |
48 | int slot; |
49 | int flags; | |
50 | } KVMSlot; | |
05330448 | 51 | |
5832d1f2 AL |
52 | typedef struct kvm_dirty_log KVMDirtyLog; |
53 | ||
05330448 AL |
54 | int kvm_allowed = 0; |
55 | ||
56 | struct KVMState | |
57 | { | |
58 | KVMSlot slots[32]; | |
59 | int fd; | |
60 | int vmfd; | |
f65ed4c1 | 61 | int coalesced_mmio; |
62a2744c SY |
62 | #ifdef KVM_CAP_COALESCED_MMIO |
63 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
64 | #endif | |
e69917e2 | 65 | int broken_set_mem_region; |
4495d6a7 | 66 | int migration_log; |
a0fb002c | 67 | int vcpu_events; |
b0b1d690 | 68 | int robust_singlestep; |
e22a25c9 AL |
69 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
70 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; | |
71 | #endif | |
6f725c13 GC |
72 | int irqchip_in_kernel; |
73 | int pit_in_kernel; | |
05330448 AL |
74 | }; |
75 | ||
76 | static KVMState *kvm_state; | |
77 | ||
78 | static KVMSlot *kvm_alloc_slot(KVMState *s) | |
79 | { | |
80 | int i; | |
81 | ||
82 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { | |
62d60e8c AL |
83 | /* KVM private memory slots */ |
84 | if (i >= 8 && i < 12) | |
85 | continue; | |
05330448 AL |
86 | if (s->slots[i].memory_size == 0) |
87 | return &s->slots[i]; | |
88 | } | |
89 | ||
d3f8d37f AL |
90 | fprintf(stderr, "%s: no free slot available\n", __func__); |
91 | abort(); | |
92 | } | |
93 | ||
94 | static KVMSlot *kvm_lookup_matching_slot(KVMState *s, | |
c227f099 AL |
95 | target_phys_addr_t start_addr, |
96 | target_phys_addr_t end_addr) | |
d3f8d37f AL |
97 | { |
98 | int i; | |
99 | ||
100 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { | |
101 | KVMSlot *mem = &s->slots[i]; | |
102 | ||
103 | if (start_addr == mem->start_addr && | |
104 | end_addr == mem->start_addr + mem->memory_size) { | |
105 | return mem; | |
106 | } | |
107 | } | |
108 | ||
05330448 AL |
109 | return NULL; |
110 | } | |
111 | ||
6152e2ae AL |
112 | /* |
113 | * Find overlapping slot with lowest start address | |
114 | */ | |
115 | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s, | |
c227f099 AL |
116 | target_phys_addr_t start_addr, |
117 | target_phys_addr_t end_addr) | |
05330448 | 118 | { |
6152e2ae | 119 | KVMSlot *found = NULL; |
05330448 AL |
120 | int i; |
121 | ||
122 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { | |
123 | KVMSlot *mem = &s->slots[i]; | |
124 | ||
6152e2ae AL |
125 | if (mem->memory_size == 0 || |
126 | (found && found->start_addr < mem->start_addr)) { | |
127 | continue; | |
128 | } | |
129 | ||
130 | if (end_addr > mem->start_addr && | |
131 | start_addr < mem->start_addr + mem->memory_size) { | |
132 | found = mem; | |
133 | } | |
05330448 AL |
134 | } |
135 | ||
6152e2ae | 136 | return found; |
05330448 AL |
137 | } |
138 | ||
5832d1f2 AL |
139 | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
140 | { | |
141 | struct kvm_userspace_memory_region mem; | |
142 | ||
143 | mem.slot = slot->slot; | |
144 | mem.guest_phys_addr = slot->start_addr; | |
145 | mem.memory_size = slot->memory_size; | |
5579c7f3 | 146 | mem.userspace_addr = (unsigned long)qemu_get_ram_ptr(slot->phys_offset); |
5832d1f2 | 147 | mem.flags = slot->flags; |
4495d6a7 JK |
148 | if (s->migration_log) { |
149 | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; | |
150 | } | |
5832d1f2 AL |
151 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
152 | } | |
153 | ||
8d2ba1fb JK |
154 | static void kvm_reset_vcpu(void *opaque) |
155 | { | |
156 | CPUState *env = opaque; | |
157 | ||
caa5af0f | 158 | kvm_arch_reset_vcpu(env); |
8d2ba1fb | 159 | } |
5832d1f2 | 160 | |
6f725c13 GC |
161 | int kvm_irqchip_in_kernel(void) |
162 | { | |
163 | return kvm_state->irqchip_in_kernel; | |
164 | } | |
165 | ||
166 | int kvm_pit_in_kernel(void) | |
167 | { | |
168 | return kvm_state->pit_in_kernel; | |
169 | } | |
170 | ||
171 | ||
05330448 AL |
172 | int kvm_init_vcpu(CPUState *env) |
173 | { | |
174 | KVMState *s = kvm_state; | |
175 | long mmap_size; | |
176 | int ret; | |
177 | ||
178 | dprintf("kvm_init_vcpu\n"); | |
179 | ||
984b5181 | 180 | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index); |
05330448 AL |
181 | if (ret < 0) { |
182 | dprintf("kvm_create_vcpu failed\n"); | |
183 | goto err; | |
184 | } | |
185 | ||
186 | env->kvm_fd = ret; | |
187 | env->kvm_state = s; | |
188 | ||
189 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); | |
190 | if (mmap_size < 0) { | |
191 | dprintf("KVM_GET_VCPU_MMAP_SIZE failed\n"); | |
192 | goto err; | |
193 | } | |
194 | ||
195 | env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, | |
196 | env->kvm_fd, 0); | |
197 | if (env->kvm_run == MAP_FAILED) { | |
198 | ret = -errno; | |
199 | dprintf("mmap'ing vcpu state failed\n"); | |
200 | goto err; | |
201 | } | |
202 | ||
62a2744c SY |
203 | #ifdef KVM_CAP_COALESCED_MMIO |
204 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) | |
205 | s->coalesced_mmio_ring = (void *) env->kvm_run + | |
206 | s->coalesced_mmio * PAGE_SIZE; | |
207 | #endif | |
208 | ||
05330448 | 209 | ret = kvm_arch_init_vcpu(env); |
8d2ba1fb | 210 | if (ret == 0) { |
a08d4367 | 211 | qemu_register_reset(kvm_reset_vcpu, env); |
caa5af0f | 212 | kvm_arch_reset_vcpu(env); |
8d2ba1fb | 213 | } |
05330448 AL |
214 | err: |
215 | return ret; | |
216 | } | |
217 | ||
5832d1f2 AL |
218 | /* |
219 | * dirty pages logging control | |
220 | */ | |
c227f099 AL |
221 | static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
222 | ram_addr_t size, int flags, int mask) | |
5832d1f2 AL |
223 | { |
224 | KVMState *s = kvm_state; | |
d3f8d37f | 225 | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
4495d6a7 JK |
226 | int old_flags; |
227 | ||
5832d1f2 | 228 | if (mem == NULL) { |
d3f8d37f AL |
229 | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
230 | TARGET_FMT_plx "\n", __func__, phys_addr, | |
c227f099 | 231 | (target_phys_addr_t)(phys_addr + size - 1)); |
5832d1f2 AL |
232 | return -EINVAL; |
233 | } | |
234 | ||
4495d6a7 | 235 | old_flags = mem->flags; |
5832d1f2 | 236 | |
4495d6a7 | 237 | flags = (mem->flags & ~mask) | flags; |
5832d1f2 AL |
238 | mem->flags = flags; |
239 | ||
4495d6a7 JK |
240 | /* If nothing changed effectively, no need to issue ioctl */ |
241 | if (s->migration_log) { | |
242 | flags |= KVM_MEM_LOG_DIRTY_PAGES; | |
243 | } | |
244 | if (flags == old_flags) { | |
245 | return 0; | |
246 | } | |
247 | ||
5832d1f2 AL |
248 | return kvm_set_user_memory_region(s, mem); |
249 | } | |
250 | ||
c227f099 | 251 | int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size) |
5832d1f2 | 252 | { |
d3f8d37f | 253 | return kvm_dirty_pages_log_change(phys_addr, size, |
5832d1f2 AL |
254 | KVM_MEM_LOG_DIRTY_PAGES, |
255 | KVM_MEM_LOG_DIRTY_PAGES); | |
256 | } | |
257 | ||
c227f099 | 258 | int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size) |
5832d1f2 | 259 | { |
d3f8d37f | 260 | return kvm_dirty_pages_log_change(phys_addr, size, |
5832d1f2 AL |
261 | 0, |
262 | KVM_MEM_LOG_DIRTY_PAGES); | |
263 | } | |
264 | ||
7b8f3b78 | 265 | static int kvm_set_migration_log(int enable) |
4495d6a7 JK |
266 | { |
267 | KVMState *s = kvm_state; | |
268 | KVMSlot *mem; | |
269 | int i, err; | |
270 | ||
271 | s->migration_log = enable; | |
272 | ||
273 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) { | |
274 | mem = &s->slots[i]; | |
275 | ||
276 | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) { | |
277 | continue; | |
278 | } | |
279 | err = kvm_set_user_memory_region(s, mem); | |
280 | if (err) { | |
281 | return err; | |
282 | } | |
283 | } | |
284 | return 0; | |
285 | } | |
286 | ||
96c1606b AG |
287 | static int test_le_bit(unsigned long nr, unsigned char *addr) |
288 | { | |
289 | return (addr[nr >> 3] >> (nr & 7)) & 1; | |
290 | } | |
291 | ||
5832d1f2 AL |
292 | /** |
293 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space | |
294 | * This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty(). | |
295 | * This means all bits are set to dirty. | |
296 | * | |
d3f8d37f | 297 | * @start_add: start of logged region. |
5832d1f2 AL |
298 | * @end_addr: end of logged region. |
299 | */ | |
7b8f3b78 MT |
300 | static int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
301 | target_phys_addr_t end_addr) | |
5832d1f2 AL |
302 | { |
303 | KVMState *s = kvm_state; | |
151f7749 | 304 | unsigned long size, allocated_size = 0; |
c227f099 AL |
305 | target_phys_addr_t phys_addr; |
306 | ram_addr_t addr; | |
151f7749 JK |
307 | KVMDirtyLog d; |
308 | KVMSlot *mem; | |
309 | int ret = 0; | |
5832d1f2 | 310 | |
151f7749 JK |
311 | d.dirty_bitmap = NULL; |
312 | while (start_addr < end_addr) { | |
313 | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); | |
314 | if (mem == NULL) { | |
315 | break; | |
316 | } | |
5832d1f2 | 317 | |
151f7749 JK |
318 | size = ((mem->memory_size >> TARGET_PAGE_BITS) + 7) / 8; |
319 | if (!d.dirty_bitmap) { | |
320 | d.dirty_bitmap = qemu_malloc(size); | |
321 | } else if (size > allocated_size) { | |
322 | d.dirty_bitmap = qemu_realloc(d.dirty_bitmap, size); | |
323 | } | |
324 | allocated_size = size; | |
325 | memset(d.dirty_bitmap, 0, allocated_size); | |
5832d1f2 | 326 | |
151f7749 | 327 | d.slot = mem->slot; |
5832d1f2 | 328 | |
6e489f3f | 329 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
151f7749 JK |
330 | dprintf("ioctl failed %d\n", errno); |
331 | ret = -1; | |
332 | break; | |
333 | } | |
5832d1f2 | 334 | |
151f7749 JK |
335 | for (phys_addr = mem->start_addr, addr = mem->phys_offset; |
336 | phys_addr < mem->start_addr + mem->memory_size; | |
337 | phys_addr += TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
96c1606b | 338 | unsigned char *bitmap = (unsigned char *)d.dirty_bitmap; |
151f7749 | 339 | unsigned nr = (phys_addr - mem->start_addr) >> TARGET_PAGE_BITS; |
151f7749 | 340 | |
96c1606b | 341 | if (test_le_bit(nr, bitmap)) { |
151f7749 JK |
342 | cpu_physical_memory_set_dirty(addr); |
343 | } | |
344 | } | |
345 | start_addr = phys_addr; | |
5832d1f2 | 346 | } |
5832d1f2 | 347 | qemu_free(d.dirty_bitmap); |
151f7749 JK |
348 | |
349 | return ret; | |
5832d1f2 AL |
350 | } |
351 | ||
c227f099 | 352 | int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size) |
f65ed4c1 AL |
353 | { |
354 | int ret = -ENOSYS; | |
355 | #ifdef KVM_CAP_COALESCED_MMIO | |
356 | KVMState *s = kvm_state; | |
357 | ||
358 | if (s->coalesced_mmio) { | |
359 | struct kvm_coalesced_mmio_zone zone; | |
360 | ||
361 | zone.addr = start; | |
362 | zone.size = size; | |
363 | ||
364 | ret = kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); | |
365 | } | |
366 | #endif | |
367 | ||
368 | return ret; | |
369 | } | |
370 | ||
c227f099 | 371 | int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size) |
f65ed4c1 AL |
372 | { |
373 | int ret = -ENOSYS; | |
374 | #ifdef KVM_CAP_COALESCED_MMIO | |
375 | KVMState *s = kvm_state; | |
376 | ||
377 | if (s->coalesced_mmio) { | |
378 | struct kvm_coalesced_mmio_zone zone; | |
379 | ||
380 | zone.addr = start; | |
381 | zone.size = size; | |
382 | ||
383 | ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); | |
384 | } | |
385 | #endif | |
386 | ||
387 | return ret; | |
388 | } | |
389 | ||
ad7b8b33 AL |
390 | int kvm_check_extension(KVMState *s, unsigned int extension) |
391 | { | |
392 | int ret; | |
393 | ||
394 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); | |
395 | if (ret < 0) { | |
396 | ret = 0; | |
397 | } | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
7b8f3b78 MT |
402 | static void kvm_set_phys_mem(target_phys_addr_t start_addr, |
403 | ram_addr_t size, | |
404 | ram_addr_t phys_offset) | |
46dbef6a MT |
405 | { |
406 | KVMState *s = kvm_state; | |
407 | ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; | |
408 | KVMSlot *mem, old; | |
409 | int err; | |
410 | ||
411 | if (start_addr & ~TARGET_PAGE_MASK) { | |
412 | if (flags >= IO_MEM_UNASSIGNED) { | |
413 | if (!kvm_lookup_overlapping_slot(s, start_addr, | |
414 | start_addr + size)) { | |
415 | return; | |
416 | } | |
417 | fprintf(stderr, "Unaligned split of a KVM memory slot\n"); | |
418 | } else { | |
419 | fprintf(stderr, "Only page-aligned memory slots supported\n"); | |
420 | } | |
421 | abort(); | |
422 | } | |
423 | ||
424 | /* KVM does not support read-only slots */ | |
425 | phys_offset &= ~IO_MEM_ROM; | |
426 | ||
427 | while (1) { | |
428 | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); | |
429 | if (!mem) { | |
430 | break; | |
431 | } | |
432 | ||
433 | if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr && | |
434 | (start_addr + size <= mem->start_addr + mem->memory_size) && | |
435 | (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) { | |
436 | /* The new slot fits into the existing one and comes with | |
437 | * identical parameters - nothing to be done. */ | |
438 | return; | |
439 | } | |
440 | ||
441 | old = *mem; | |
442 | ||
443 | /* unregister the overlapping slot */ | |
444 | mem->memory_size = 0; | |
445 | err = kvm_set_user_memory_region(s, mem); | |
446 | if (err) { | |
447 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", | |
448 | __func__, strerror(-err)); | |
449 | abort(); | |
450 | } | |
451 | ||
452 | /* Workaround for older KVM versions: we can't join slots, even not by | |
453 | * unregistering the previous ones and then registering the larger | |
454 | * slot. We have to maintain the existing fragmentation. Sigh. | |
455 | * | |
456 | * This workaround assumes that the new slot starts at the same | |
457 | * address as the first existing one. If not or if some overlapping | |
458 | * slot comes around later, we will fail (not seen in practice so far) | |
459 | * - and actually require a recent KVM version. */ | |
460 | if (s->broken_set_mem_region && | |
461 | old.start_addr == start_addr && old.memory_size < size && | |
462 | flags < IO_MEM_UNASSIGNED) { | |
463 | mem = kvm_alloc_slot(s); | |
464 | mem->memory_size = old.memory_size; | |
465 | mem->start_addr = old.start_addr; | |
466 | mem->phys_offset = old.phys_offset; | |
467 | mem->flags = 0; | |
468 | ||
469 | err = kvm_set_user_memory_region(s, mem); | |
470 | if (err) { | |
471 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, | |
472 | strerror(-err)); | |
473 | abort(); | |
474 | } | |
475 | ||
476 | start_addr += old.memory_size; | |
477 | phys_offset += old.memory_size; | |
478 | size -= old.memory_size; | |
479 | continue; | |
480 | } | |
481 | ||
482 | /* register prefix slot */ | |
483 | if (old.start_addr < start_addr) { | |
484 | mem = kvm_alloc_slot(s); | |
485 | mem->memory_size = start_addr - old.start_addr; | |
486 | mem->start_addr = old.start_addr; | |
487 | mem->phys_offset = old.phys_offset; | |
488 | mem->flags = 0; | |
489 | ||
490 | err = kvm_set_user_memory_region(s, mem); | |
491 | if (err) { | |
492 | fprintf(stderr, "%s: error registering prefix slot: %s\n", | |
493 | __func__, strerror(-err)); | |
494 | abort(); | |
495 | } | |
496 | } | |
497 | ||
498 | /* register suffix slot */ | |
499 | if (old.start_addr + old.memory_size > start_addr + size) { | |
500 | ram_addr_t size_delta; | |
501 | ||
502 | mem = kvm_alloc_slot(s); | |
503 | mem->start_addr = start_addr + size; | |
504 | size_delta = mem->start_addr - old.start_addr; | |
505 | mem->memory_size = old.memory_size - size_delta; | |
506 | mem->phys_offset = old.phys_offset + size_delta; | |
507 | mem->flags = 0; | |
508 | ||
509 | err = kvm_set_user_memory_region(s, mem); | |
510 | if (err) { | |
511 | fprintf(stderr, "%s: error registering suffix slot: %s\n", | |
512 | __func__, strerror(-err)); | |
513 | abort(); | |
514 | } | |
515 | } | |
516 | } | |
517 | ||
518 | /* in case the KVM bug workaround already "consumed" the new slot */ | |
519 | if (!size) | |
520 | return; | |
521 | ||
522 | /* KVM does not need to know about this memory */ | |
523 | if (flags >= IO_MEM_UNASSIGNED) | |
524 | return; | |
525 | ||
526 | mem = kvm_alloc_slot(s); | |
527 | mem->memory_size = size; | |
528 | mem->start_addr = start_addr; | |
529 | mem->phys_offset = phys_offset; | |
530 | mem->flags = 0; | |
531 | ||
532 | err = kvm_set_user_memory_region(s, mem); | |
533 | if (err) { | |
534 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, | |
535 | strerror(-err)); | |
536 | abort(); | |
537 | } | |
538 | } | |
539 | ||
7b8f3b78 MT |
540 | static void kvm_client_set_memory(struct CPUPhysMemoryClient *client, |
541 | target_phys_addr_t start_addr, | |
542 | ram_addr_t size, | |
543 | ram_addr_t phys_offset) | |
544 | { | |
545 | kvm_set_phys_mem(start_addr, size, phys_offset); | |
546 | } | |
547 | ||
548 | static int kvm_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client, | |
549 | target_phys_addr_t start_addr, | |
550 | target_phys_addr_t end_addr) | |
551 | { | |
552 | return kvm_physical_sync_dirty_bitmap(start_addr, end_addr); | |
553 | } | |
554 | ||
555 | static int kvm_client_migration_log(struct CPUPhysMemoryClient *client, | |
556 | int enable) | |
557 | { | |
558 | return kvm_set_migration_log(enable); | |
559 | } | |
560 | ||
561 | static CPUPhysMemoryClient kvm_cpu_phys_memory_client = { | |
562 | .set_memory = kvm_client_set_memory, | |
563 | .sync_dirty_bitmap = kvm_client_sync_dirty_bitmap, | |
564 | .migration_log = kvm_client_migration_log, | |
565 | }; | |
566 | ||
05330448 AL |
567 | int kvm_init(int smp_cpus) |
568 | { | |
168ccc11 JK |
569 | static const char upgrade_note[] = |
570 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" | |
571 | "(see http://sourceforge.net/projects/kvm).\n"; | |
05330448 AL |
572 | KVMState *s; |
573 | int ret; | |
574 | int i; | |
575 | ||
9f8fd694 MM |
576 | if (smp_cpus > 1) { |
577 | fprintf(stderr, "No SMP KVM support, use '-smp 1'\n"); | |
05330448 | 578 | return -EINVAL; |
9f8fd694 | 579 | } |
05330448 AL |
580 | |
581 | s = qemu_mallocz(sizeof(KVMState)); | |
05330448 | 582 | |
e22a25c9 | 583 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
72cf2d4f | 584 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
e22a25c9 | 585 | #endif |
05330448 AL |
586 | for (i = 0; i < ARRAY_SIZE(s->slots); i++) |
587 | s->slots[i].slot = i; | |
588 | ||
589 | s->vmfd = -1; | |
40ff6d7e | 590 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
05330448 AL |
591 | if (s->fd == -1) { |
592 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); | |
593 | ret = -errno; | |
594 | goto err; | |
595 | } | |
596 | ||
597 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); | |
598 | if (ret < KVM_API_VERSION) { | |
599 | if (ret > 0) | |
600 | ret = -EINVAL; | |
601 | fprintf(stderr, "kvm version too old\n"); | |
602 | goto err; | |
603 | } | |
604 | ||
605 | if (ret > KVM_API_VERSION) { | |
606 | ret = -EINVAL; | |
607 | fprintf(stderr, "kvm version not supported\n"); | |
608 | goto err; | |
609 | } | |
610 | ||
611 | s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); | |
612 | if (s->vmfd < 0) | |
613 | goto err; | |
614 | ||
615 | /* initially, KVM allocated its own memory and we had to jump through | |
616 | * hooks to make phys_ram_base point to this. Modern versions of KVM | |
5579c7f3 | 617 | * just use a user allocated buffer so we can use regular pages |
05330448 AL |
618 | * unmodified. Make sure we have a sufficiently modern version of KVM. |
619 | */ | |
ad7b8b33 AL |
620 | if (!kvm_check_extension(s, KVM_CAP_USER_MEMORY)) { |
621 | ret = -EINVAL; | |
168ccc11 JK |
622 | fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n%s", |
623 | upgrade_note); | |
05330448 AL |
624 | goto err; |
625 | } | |
626 | ||
d85dc283 AL |
627 | /* There was a nasty bug in < kvm-80 that prevents memory slots from being |
628 | * destroyed properly. Since we rely on this capability, refuse to work | |
629 | * with any kernel without this capability. */ | |
ad7b8b33 AL |
630 | if (!kvm_check_extension(s, KVM_CAP_DESTROY_MEMORY_REGION_WORKS)) { |
631 | ret = -EINVAL; | |
d85dc283 AL |
632 | |
633 | fprintf(stderr, | |
168ccc11 JK |
634 | "KVM kernel module broken (DESTROY_MEMORY_REGION).\n%s", |
635 | upgrade_note); | |
d85dc283 AL |
636 | goto err; |
637 | } | |
638 | ||
62a2744c | 639 | s->coalesced_mmio = 0; |
f65ed4c1 | 640 | #ifdef KVM_CAP_COALESCED_MMIO |
ad7b8b33 | 641 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
62a2744c | 642 | s->coalesced_mmio_ring = NULL; |
f65ed4c1 AL |
643 | #endif |
644 | ||
e69917e2 JK |
645 | s->broken_set_mem_region = 1; |
646 | #ifdef KVM_CAP_JOIN_MEMORY_REGIONS_WORKS | |
647 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); | |
648 | if (ret > 0) { | |
649 | s->broken_set_mem_region = 0; | |
650 | } | |
651 | #endif | |
652 | ||
a0fb002c JK |
653 | s->vcpu_events = 0; |
654 | #ifdef KVM_CAP_VCPU_EVENTS | |
655 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); | |
656 | #endif | |
657 | ||
b0b1d690 JK |
658 | s->robust_singlestep = 0; |
659 | #ifdef KVM_CAP_X86_ROBUST_SINGLESTEP | |
660 | s->robust_singlestep = | |
661 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); | |
662 | #endif | |
663 | ||
05330448 AL |
664 | ret = kvm_arch_init(s, smp_cpus); |
665 | if (ret < 0) | |
666 | goto err; | |
667 | ||
668 | kvm_state = s; | |
7b8f3b78 | 669 | cpu_register_phys_memory_client(&kvm_cpu_phys_memory_client); |
05330448 AL |
670 | |
671 | return 0; | |
672 | ||
673 | err: | |
674 | if (s) { | |
675 | if (s->vmfd != -1) | |
676 | close(s->vmfd); | |
677 | if (s->fd != -1) | |
678 | close(s->fd); | |
679 | } | |
680 | qemu_free(s); | |
681 | ||
682 | return ret; | |
683 | } | |
684 | ||
afcea8cb BS |
685 | static int kvm_handle_io(uint16_t port, void *data, int direction, int size, |
686 | uint32_t count) | |
05330448 AL |
687 | { |
688 | int i; | |
689 | uint8_t *ptr = data; | |
690 | ||
691 | for (i = 0; i < count; i++) { | |
692 | if (direction == KVM_EXIT_IO_IN) { | |
693 | switch (size) { | |
694 | case 1: | |
afcea8cb | 695 | stb_p(ptr, cpu_inb(port)); |
05330448 AL |
696 | break; |
697 | case 2: | |
afcea8cb | 698 | stw_p(ptr, cpu_inw(port)); |
05330448 AL |
699 | break; |
700 | case 4: | |
afcea8cb | 701 | stl_p(ptr, cpu_inl(port)); |
05330448 AL |
702 | break; |
703 | } | |
704 | } else { | |
705 | switch (size) { | |
706 | case 1: | |
afcea8cb | 707 | cpu_outb(port, ldub_p(ptr)); |
05330448 AL |
708 | break; |
709 | case 2: | |
afcea8cb | 710 | cpu_outw(port, lduw_p(ptr)); |
05330448 AL |
711 | break; |
712 | case 4: | |
afcea8cb | 713 | cpu_outl(port, ldl_p(ptr)); |
05330448 AL |
714 | break; |
715 | } | |
716 | } | |
717 | ||
718 | ptr += size; | |
719 | } | |
720 | ||
721 | return 1; | |
722 | } | |
723 | ||
62a2744c | 724 | void kvm_flush_coalesced_mmio_buffer(void) |
f65ed4c1 AL |
725 | { |
726 | #ifdef KVM_CAP_COALESCED_MMIO | |
727 | KVMState *s = kvm_state; | |
62a2744c SY |
728 | if (s->coalesced_mmio_ring) { |
729 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; | |
f65ed4c1 AL |
730 | while (ring->first != ring->last) { |
731 | struct kvm_coalesced_mmio *ent; | |
732 | ||
733 | ent = &ring->coalesced_mmio[ring->first]; | |
734 | ||
735 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); | |
85199474 | 736 | smp_wmb(); |
f65ed4c1 AL |
737 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
738 | } | |
739 | } | |
740 | #endif | |
741 | } | |
742 | ||
4c0960c0 AK |
743 | void kvm_cpu_synchronize_state(CPUState *env) |
744 | { | |
9ded2744 | 745 | if (!env->kvm_vcpu_dirty) { |
4c0960c0 | 746 | kvm_arch_get_registers(env); |
9ded2744 | 747 | env->kvm_vcpu_dirty = 1; |
4c0960c0 AK |
748 | } |
749 | } | |
750 | ||
ea375f9a JK |
751 | void kvm_cpu_synchronize_post_reset(CPUState *env) |
752 | { | |
753 | kvm_arch_put_registers(env, KVM_PUT_RESET_STATE); | |
754 | env->kvm_vcpu_dirty = 0; | |
755 | } | |
756 | ||
757 | void kvm_cpu_synchronize_post_init(CPUState *env) | |
758 | { | |
759 | kvm_arch_put_registers(env, KVM_PUT_FULL_STATE); | |
760 | env->kvm_vcpu_dirty = 0; | |
761 | } | |
762 | ||
05330448 AL |
763 | int kvm_cpu_exec(CPUState *env) |
764 | { | |
765 | struct kvm_run *run = env->kvm_run; | |
766 | int ret; | |
767 | ||
768 | dprintf("kvm_cpu_exec()\n"); | |
769 | ||
770 | do { | |
6312b928 | 771 | #ifndef CONFIG_IOTHREAD |
be214e6c | 772 | if (env->exit_request) { |
05330448 AL |
773 | dprintf("interrupt exit requested\n"); |
774 | ret = 0; | |
775 | break; | |
776 | } | |
6312b928 | 777 | #endif |
05330448 | 778 | |
9ded2744 | 779 | if (env->kvm_vcpu_dirty) { |
ea375f9a | 780 | kvm_arch_put_registers(env, KVM_PUT_RUNTIME_STATE); |
9ded2744 | 781 | env->kvm_vcpu_dirty = 0; |
4c0960c0 AK |
782 | } |
783 | ||
8c14c173 | 784 | kvm_arch_pre_run(env, run); |
d549db5a | 785 | qemu_mutex_unlock_iothread(); |
05330448 | 786 | ret = kvm_vcpu_ioctl(env, KVM_RUN, 0); |
d549db5a | 787 | qemu_mutex_lock_iothread(); |
05330448 AL |
788 | kvm_arch_post_run(env, run); |
789 | ||
790 | if (ret == -EINTR || ret == -EAGAIN) { | |
cc84de95 | 791 | cpu_exit(env); |
05330448 AL |
792 | dprintf("io window exit\n"); |
793 | ret = 0; | |
794 | break; | |
795 | } | |
796 | ||
797 | if (ret < 0) { | |
798 | dprintf("kvm run failed %s\n", strerror(-ret)); | |
799 | abort(); | |
800 | } | |
801 | ||
62a2744c | 802 | kvm_flush_coalesced_mmio_buffer(); |
f65ed4c1 | 803 | |
05330448 AL |
804 | ret = 0; /* exit loop */ |
805 | switch (run->exit_reason) { | |
806 | case KVM_EXIT_IO: | |
807 | dprintf("handle_io\n"); | |
afcea8cb | 808 | ret = kvm_handle_io(run->io.port, |
05330448 AL |
809 | (uint8_t *)run + run->io.data_offset, |
810 | run->io.direction, | |
811 | run->io.size, | |
812 | run->io.count); | |
813 | break; | |
814 | case KVM_EXIT_MMIO: | |
815 | dprintf("handle_mmio\n"); | |
816 | cpu_physical_memory_rw(run->mmio.phys_addr, | |
817 | run->mmio.data, | |
818 | run->mmio.len, | |
819 | run->mmio.is_write); | |
820 | ret = 1; | |
821 | break; | |
822 | case KVM_EXIT_IRQ_WINDOW_OPEN: | |
823 | dprintf("irq_window_open\n"); | |
824 | break; | |
825 | case KVM_EXIT_SHUTDOWN: | |
826 | dprintf("shutdown\n"); | |
827 | qemu_system_reset_request(); | |
828 | ret = 1; | |
829 | break; | |
830 | case KVM_EXIT_UNKNOWN: | |
831 | dprintf("kvm_exit_unknown\n"); | |
832 | break; | |
833 | case KVM_EXIT_FAIL_ENTRY: | |
834 | dprintf("kvm_exit_fail_entry\n"); | |
835 | break; | |
836 | case KVM_EXIT_EXCEPTION: | |
837 | dprintf("kvm_exit_exception\n"); | |
838 | break; | |
839 | case KVM_EXIT_DEBUG: | |
840 | dprintf("kvm_exit_debug\n"); | |
e22a25c9 AL |
841 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
842 | if (kvm_arch_debug(&run->debug.arch)) { | |
843 | gdb_set_stop_cpu(env); | |
844 | vm_stop(EXCP_DEBUG); | |
845 | env->exception_index = EXCP_DEBUG; | |
846 | return 0; | |
847 | } | |
848 | /* re-enter, this exception was guest-internal */ | |
849 | ret = 1; | |
850 | #endif /* KVM_CAP_SET_GUEST_DEBUG */ | |
05330448 AL |
851 | break; |
852 | default: | |
853 | dprintf("kvm_arch_handle_exit\n"); | |
854 | ret = kvm_arch_handle_exit(env, run); | |
855 | break; | |
856 | } | |
857 | } while (ret > 0); | |
858 | ||
be214e6c AJ |
859 | if (env->exit_request) { |
860 | env->exit_request = 0; | |
becfc390 AL |
861 | env->exception_index = EXCP_INTERRUPT; |
862 | } | |
863 | ||
05330448 AL |
864 | return ret; |
865 | } | |
866 | ||
984b5181 | 867 | int kvm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
868 | { |
869 | int ret; | |
984b5181 AL |
870 | void *arg; |
871 | va_list ap; | |
05330448 | 872 | |
984b5181 AL |
873 | va_start(ap, type); |
874 | arg = va_arg(ap, void *); | |
875 | va_end(ap); | |
876 | ||
877 | ret = ioctl(s->fd, type, arg); | |
05330448 AL |
878 | if (ret == -1) |
879 | ret = -errno; | |
880 | ||
881 | return ret; | |
882 | } | |
883 | ||
984b5181 | 884 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
885 | { |
886 | int ret; | |
984b5181 AL |
887 | void *arg; |
888 | va_list ap; | |
889 | ||
890 | va_start(ap, type); | |
891 | arg = va_arg(ap, void *); | |
892 | va_end(ap); | |
05330448 | 893 | |
984b5181 | 894 | ret = ioctl(s->vmfd, type, arg); |
05330448 AL |
895 | if (ret == -1) |
896 | ret = -errno; | |
897 | ||
898 | return ret; | |
899 | } | |
900 | ||
984b5181 | 901 | int kvm_vcpu_ioctl(CPUState *env, int type, ...) |
05330448 AL |
902 | { |
903 | int ret; | |
984b5181 AL |
904 | void *arg; |
905 | va_list ap; | |
906 | ||
907 | va_start(ap, type); | |
908 | arg = va_arg(ap, void *); | |
909 | va_end(ap); | |
05330448 | 910 | |
984b5181 | 911 | ret = ioctl(env->kvm_fd, type, arg); |
05330448 AL |
912 | if (ret == -1) |
913 | ret = -errno; | |
914 | ||
915 | return ret; | |
916 | } | |
bd322087 AL |
917 | |
918 | int kvm_has_sync_mmu(void) | |
919 | { | |
a9c11522 | 920 | #ifdef KVM_CAP_SYNC_MMU |
bd322087 AL |
921 | KVMState *s = kvm_state; |
922 | ||
ad7b8b33 AL |
923 | return kvm_check_extension(s, KVM_CAP_SYNC_MMU); |
924 | #else | |
bd322087 | 925 | return 0; |
ad7b8b33 | 926 | #endif |
bd322087 | 927 | } |
e22a25c9 | 928 | |
a0fb002c JK |
929 | int kvm_has_vcpu_events(void) |
930 | { | |
931 | return kvm_state->vcpu_events; | |
932 | } | |
933 | ||
b0b1d690 JK |
934 | int kvm_has_robust_singlestep(void) |
935 | { | |
936 | return kvm_state->robust_singlestep; | |
937 | } | |
938 | ||
6f0437e8 JK |
939 | void kvm_setup_guest_memory(void *start, size_t size) |
940 | { | |
941 | if (!kvm_has_sync_mmu()) { | |
942 | #ifdef MADV_DONTFORK | |
943 | int ret = madvise(start, size, MADV_DONTFORK); | |
944 | ||
945 | if (ret) { | |
946 | perror("madvice"); | |
947 | exit(1); | |
948 | } | |
949 | #else | |
950 | fprintf(stderr, | |
951 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); | |
952 | exit(1); | |
953 | #endif | |
954 | } | |
955 | } | |
956 | ||
e22a25c9 | 957 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
fc5d642f LC |
958 | static void on_vcpu(CPUState *env, void (*func)(void *data), void *data) |
959 | { | |
828566bc | 960 | #ifdef CONFIG_IOTHREAD |
a2eebe88 AS |
961 | if (env != cpu_single_env) { |
962 | abort(); | |
fc5d642f | 963 | } |
828566bc | 964 | #endif |
a2eebe88 | 965 | func(data); |
fc5d642f LC |
966 | } |
967 | ||
e22a25c9 AL |
968 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env, |
969 | target_ulong pc) | |
970 | { | |
971 | struct kvm_sw_breakpoint *bp; | |
972 | ||
72cf2d4f | 973 | QTAILQ_FOREACH(bp, &env->kvm_state->kvm_sw_breakpoints, entry) { |
e22a25c9 AL |
974 | if (bp->pc == pc) |
975 | return bp; | |
976 | } | |
977 | return NULL; | |
978 | } | |
979 | ||
980 | int kvm_sw_breakpoints_active(CPUState *env) | |
981 | { | |
72cf2d4f | 982 | return !QTAILQ_EMPTY(&env->kvm_state->kvm_sw_breakpoints); |
e22a25c9 AL |
983 | } |
984 | ||
452e4751 GC |
985 | struct kvm_set_guest_debug_data { |
986 | struct kvm_guest_debug dbg; | |
987 | CPUState *env; | |
988 | int err; | |
989 | }; | |
990 | ||
991 | static void kvm_invoke_set_guest_debug(void *data) | |
992 | { | |
993 | struct kvm_set_guest_debug_data *dbg_data = data; | |
b3807725 JK |
994 | CPUState *env = dbg_data->env; |
995 | ||
b3807725 | 996 | dbg_data->err = kvm_vcpu_ioctl(env, KVM_SET_GUEST_DEBUG, &dbg_data->dbg); |
452e4751 GC |
997 | } |
998 | ||
e22a25c9 AL |
999 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) |
1000 | { | |
452e4751 | 1001 | struct kvm_set_guest_debug_data data; |
e22a25c9 | 1002 | |
b0b1d690 | 1003 | data.dbg.control = reinject_trap; |
e22a25c9 | 1004 | |
b0b1d690 JK |
1005 | if (env->singlestep_enabled) { |
1006 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; | |
1007 | } | |
452e4751 | 1008 | kvm_arch_update_guest_debug(env, &data.dbg); |
452e4751 | 1009 | data.env = env; |
e22a25c9 | 1010 | |
452e4751 GC |
1011 | on_vcpu(env, kvm_invoke_set_guest_debug, &data); |
1012 | return data.err; | |
e22a25c9 AL |
1013 | } |
1014 | ||
1015 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, | |
1016 | target_ulong len, int type) | |
1017 | { | |
1018 | struct kvm_sw_breakpoint *bp; | |
1019 | CPUState *env; | |
1020 | int err; | |
1021 | ||
1022 | if (type == GDB_BREAKPOINT_SW) { | |
1023 | bp = kvm_find_sw_breakpoint(current_env, addr); | |
1024 | if (bp) { | |
1025 | bp->use_count++; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | bp = qemu_malloc(sizeof(struct kvm_sw_breakpoint)); | |
1030 | if (!bp) | |
1031 | return -ENOMEM; | |
1032 | ||
1033 | bp->pc = addr; | |
1034 | bp->use_count = 1; | |
1035 | err = kvm_arch_insert_sw_breakpoint(current_env, bp); | |
1036 | if (err) { | |
1037 | free(bp); | |
1038 | return err; | |
1039 | } | |
1040 | ||
72cf2d4f | 1041 | QTAILQ_INSERT_HEAD(¤t_env->kvm_state->kvm_sw_breakpoints, |
e22a25c9 AL |
1042 | bp, entry); |
1043 | } else { | |
1044 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); | |
1045 | if (err) | |
1046 | return err; | |
1047 | } | |
1048 | ||
1049 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1050 | err = kvm_update_guest_debug(env, 0); | |
1051 | if (err) | |
1052 | return err; | |
1053 | } | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, | |
1058 | target_ulong len, int type) | |
1059 | { | |
1060 | struct kvm_sw_breakpoint *bp; | |
1061 | CPUState *env; | |
1062 | int err; | |
1063 | ||
1064 | if (type == GDB_BREAKPOINT_SW) { | |
1065 | bp = kvm_find_sw_breakpoint(current_env, addr); | |
1066 | if (!bp) | |
1067 | return -ENOENT; | |
1068 | ||
1069 | if (bp->use_count > 1) { | |
1070 | bp->use_count--; | |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | err = kvm_arch_remove_sw_breakpoint(current_env, bp); | |
1075 | if (err) | |
1076 | return err; | |
1077 | ||
72cf2d4f | 1078 | QTAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry); |
e22a25c9 AL |
1079 | qemu_free(bp); |
1080 | } else { | |
1081 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); | |
1082 | if (err) | |
1083 | return err; | |
1084 | } | |
1085 | ||
1086 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1087 | err = kvm_update_guest_debug(env, 0); | |
1088 | if (err) | |
1089 | return err; | |
1090 | } | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | void kvm_remove_all_breakpoints(CPUState *current_env) | |
1095 | { | |
1096 | struct kvm_sw_breakpoint *bp, *next; | |
1097 | KVMState *s = current_env->kvm_state; | |
1098 | CPUState *env; | |
1099 | ||
72cf2d4f | 1100 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
e22a25c9 AL |
1101 | if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) { |
1102 | /* Try harder to find a CPU that currently sees the breakpoint. */ | |
1103 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1104 | if (kvm_arch_remove_sw_breakpoint(env, bp) == 0) | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | kvm_arch_remove_all_hw_breakpoints(); | |
1110 | ||
1111 | for (env = first_cpu; env != NULL; env = env->next_cpu) | |
1112 | kvm_update_guest_debug(env, 0); | |
1113 | } | |
1114 | ||
1115 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ | |
1116 | ||
1117 | int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap) | |
1118 | { | |
1119 | return -EINVAL; | |
1120 | } | |
1121 | ||
1122 | int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr, | |
1123 | target_ulong len, int type) | |
1124 | { | |
1125 | return -EINVAL; | |
1126 | } | |
1127 | ||
1128 | int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr, | |
1129 | target_ulong len, int type) | |
1130 | { | |
1131 | return -EINVAL; | |
1132 | } | |
1133 | ||
1134 | void kvm_remove_all_breakpoints(CPUState *current_env) | |
1135 | { | |
1136 | } | |
1137 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ | |
cc84de95 MT |
1138 | |
1139 | int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) | |
1140 | { | |
1141 | struct kvm_signal_mask *sigmask; | |
1142 | int r; | |
1143 | ||
1144 | if (!sigset) | |
1145 | return kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, NULL); | |
1146 | ||
1147 | sigmask = qemu_malloc(sizeof(*sigmask) + sizeof(*sigset)); | |
1148 | ||
1149 | sigmask->len = 8; | |
1150 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); | |
1151 | r = kvm_vcpu_ioctl(env, KVM_SET_SIGNAL_MASK, sigmask); | |
1152 | free(sigmask); | |
1153 | ||
1154 | return r; | |
1155 | } |