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ad96090a BS |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include <stdint.h> | |
25 | #include <stdarg.h> | |
b2e0a138 | 26 | #include <stdlib.h> |
ad96090a | 27 | #ifndef _WIN32 |
1c47cb16 | 28 | #include <sys/types.h> |
ad96090a BS |
29 | #include <sys/mman.h> |
30 | #endif | |
31 | #include "config.h" | |
83c9089e | 32 | #include "monitor/monitor.h" |
9c17d615 | 33 | #include "sysemu/sysemu.h" |
1de7afc9 PB |
34 | #include "qemu/bitops.h" |
35 | #include "qemu/bitmap.h" | |
9c17d615 | 36 | #include "sysemu/arch_init.h" |
ad96090a | 37 | #include "audio/audio.h" |
0d09e41a | 38 | #include "hw/i386/pc.h" |
a2cb15b0 | 39 | #include "hw/pci/pci.h" |
0d09e41a | 40 | #include "hw/audio/audio.h" |
9c17d615 | 41 | #include "sysemu/kvm.h" |
caf71f86 | 42 | #include "migration/migration.h" |
0d09e41a | 43 | #include "hw/i386/smbios.h" |
022c62cb | 44 | #include "exec/address-spaces.h" |
0d09e41a | 45 | #include "hw/audio/pcspk.h" |
caf71f86 | 46 | #include "migration/page_cache.h" |
1de7afc9 | 47 | #include "qemu/config-file.h" |
99afc91d | 48 | #include "qmp-commands.h" |
3c12193d | 49 | #include "trace.h" |
0d6d3c87 | 50 | #include "exec/cpu-all.h" |
0445259b | 51 | #include "hw/acpi/acpi.h" |
ad96090a | 52 | |
3a697f69 OW |
53 | #ifdef DEBUG_ARCH_INIT |
54 | #define DPRINTF(fmt, ...) \ | |
55 | do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0) | |
56 | #else | |
57 | #define DPRINTF(fmt, ...) \ | |
58 | do { } while (0) | |
59 | #endif | |
60 | ||
ad96090a BS |
61 | #ifdef TARGET_SPARC |
62 | int graphic_width = 1024; | |
63 | int graphic_height = 768; | |
64 | int graphic_depth = 8; | |
65 | #else | |
66 | int graphic_width = 800; | |
67 | int graphic_height = 600; | |
f1ff0e89 | 68 | int graphic_depth = 32; |
ad96090a BS |
69 | #endif |
70 | ||
ad96090a BS |
71 | |
72 | #if defined(TARGET_ALPHA) | |
73 | #define QEMU_ARCH QEMU_ARCH_ALPHA | |
74 | #elif defined(TARGET_ARM) | |
75 | #define QEMU_ARCH QEMU_ARCH_ARM | |
76 | #elif defined(TARGET_CRIS) | |
77 | #define QEMU_ARCH QEMU_ARCH_CRIS | |
78 | #elif defined(TARGET_I386) | |
79 | #define QEMU_ARCH QEMU_ARCH_I386 | |
80 | #elif defined(TARGET_M68K) | |
81 | #define QEMU_ARCH QEMU_ARCH_M68K | |
81ea0e13 MW |
82 | #elif defined(TARGET_LM32) |
83 | #define QEMU_ARCH QEMU_ARCH_LM32 | |
ad96090a BS |
84 | #elif defined(TARGET_MICROBLAZE) |
85 | #define QEMU_ARCH QEMU_ARCH_MICROBLAZE | |
86 | #elif defined(TARGET_MIPS) | |
87 | #define QEMU_ARCH QEMU_ARCH_MIPS | |
d15a9c23 AG |
88 | #elif defined(TARGET_MOXIE) |
89 | #define QEMU_ARCH QEMU_ARCH_MOXIE | |
e67db06e JL |
90 | #elif defined(TARGET_OPENRISC) |
91 | #define QEMU_ARCH QEMU_ARCH_OPENRISC | |
ad96090a BS |
92 | #elif defined(TARGET_PPC) |
93 | #define QEMU_ARCH QEMU_ARCH_PPC | |
94 | #elif defined(TARGET_S390X) | |
95 | #define QEMU_ARCH QEMU_ARCH_S390X | |
96 | #elif defined(TARGET_SH4) | |
97 | #define QEMU_ARCH QEMU_ARCH_SH4 | |
98 | #elif defined(TARGET_SPARC) | |
99 | #define QEMU_ARCH QEMU_ARCH_SPARC | |
2328826b MF |
100 | #elif defined(TARGET_XTENSA) |
101 | #define QEMU_ARCH QEMU_ARCH_XTENSA | |
4f23a1e6 GX |
102 | #elif defined(TARGET_UNICORE32) |
103 | #define QEMU_ARCH QEMU_ARCH_UNICORE32 | |
ad96090a BS |
104 | #endif |
105 | ||
106 | const uint32_t arch_type = QEMU_ARCH; | |
7ca1dfad CV |
107 | static bool mig_throttle_on; |
108 | static int dirty_rate_high_cnt; | |
109 | static void check_guest_throttling(void); | |
ad96090a BS |
110 | |
111 | /***********************************************************/ | |
112 | /* ram save/restore */ | |
113 | ||
d20878d2 YT |
114 | #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */ |
115 | #define RAM_SAVE_FLAG_COMPRESS 0x02 | |
116 | #define RAM_SAVE_FLAG_MEM_SIZE 0x04 | |
117 | #define RAM_SAVE_FLAG_PAGE 0x08 | |
118 | #define RAM_SAVE_FLAG_EOS 0x10 | |
119 | #define RAM_SAVE_FLAG_CONTINUE 0x20 | |
17ad9b35 | 120 | #define RAM_SAVE_FLAG_XBZRLE 0x40 |
ad96090a | 121 | |
b5a8fe5e | 122 | |
756557de EH |
123 | static struct defconfig_file { |
124 | const char *filename; | |
f29a5614 EH |
125 | /* Indicates it is an user config file (disabled by -no-user-config) */ |
126 | bool userconfig; | |
756557de | 127 | } default_config_files[] = { |
f29a5614 | 128 | { CONFIG_QEMU_CONFDIR "/qemu.conf", true }, |
2e59915d | 129 | { CONFIG_QEMU_CONFDIR "/target-" TARGET_NAME ".conf", true }, |
756557de EH |
130 | { NULL }, /* end of list */ |
131 | }; | |
132 | ||
133 | ||
f29a5614 | 134 | int qemu_read_default_config_files(bool userconfig) |
b5a8fe5e EH |
135 | { |
136 | int ret; | |
756557de | 137 | struct defconfig_file *f; |
b5a8fe5e | 138 | |
756557de | 139 | for (f = default_config_files; f->filename; f++) { |
f29a5614 EH |
140 | if (!userconfig && f->userconfig) { |
141 | continue; | |
142 | } | |
756557de EH |
143 | ret = qemu_read_config_file(f->filename); |
144 | if (ret < 0 && ret != -ENOENT) { | |
145 | return ret; | |
146 | } | |
b5a8fe5e | 147 | } |
4d8b3c63 | 148 | |
b5a8fe5e EH |
149 | return 0; |
150 | } | |
151 | ||
3edcd7e6 | 152 | static inline bool is_zero_page(uint8_t *p) |
ad96090a | 153 | { |
3edcd7e6 PL |
154 | return buffer_find_nonzero_offset(p, TARGET_PAGE_SIZE) == |
155 | TARGET_PAGE_SIZE; | |
ad96090a BS |
156 | } |
157 | ||
17ad9b35 OW |
158 | /* struct contains XBZRLE cache and a static page |
159 | used by the compression */ | |
160 | static struct { | |
161 | /* buffer used for XBZRLE encoding */ | |
162 | uint8_t *encoded_buf; | |
163 | /* buffer for storing page content */ | |
164 | uint8_t *current_buf; | |
165 | /* buffer used for XBZRLE decoding */ | |
166 | uint8_t *decoded_buf; | |
167 | /* Cache for XBZRLE */ | |
168 | PageCache *cache; | |
169 | } XBZRLE = { | |
170 | .encoded_buf = NULL, | |
171 | .current_buf = NULL, | |
172 | .decoded_buf = NULL, | |
173 | .cache = NULL, | |
174 | }; | |
175 | ||
9e1ba4cc OW |
176 | |
177 | int64_t xbzrle_cache_resize(int64_t new_size) | |
178 | { | |
179 | if (XBZRLE.cache != NULL) { | |
180 | return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) * | |
181 | TARGET_PAGE_SIZE; | |
182 | } | |
183 | return pow2floor(new_size); | |
184 | } | |
185 | ||
004d4c10 OW |
186 | /* accounting for migration statistics */ |
187 | typedef struct AccountingInfo { | |
188 | uint64_t dup_pages; | |
f1c72795 | 189 | uint64_t skipped_pages; |
004d4c10 OW |
190 | uint64_t norm_pages; |
191 | uint64_t iterations; | |
f36d55af OW |
192 | uint64_t xbzrle_bytes; |
193 | uint64_t xbzrle_pages; | |
194 | uint64_t xbzrle_cache_miss; | |
195 | uint64_t xbzrle_overflows; | |
004d4c10 OW |
196 | } AccountingInfo; |
197 | ||
198 | static AccountingInfo acct_info; | |
199 | ||
200 | static void acct_clear(void) | |
201 | { | |
202 | memset(&acct_info, 0, sizeof(acct_info)); | |
203 | } | |
204 | ||
205 | uint64_t dup_mig_bytes_transferred(void) | |
206 | { | |
207 | return acct_info.dup_pages * TARGET_PAGE_SIZE; | |
208 | } | |
209 | ||
210 | uint64_t dup_mig_pages_transferred(void) | |
211 | { | |
212 | return acct_info.dup_pages; | |
213 | } | |
214 | ||
f1c72795 PL |
215 | uint64_t skipped_mig_bytes_transferred(void) |
216 | { | |
217 | return acct_info.skipped_pages * TARGET_PAGE_SIZE; | |
218 | } | |
219 | ||
220 | uint64_t skipped_mig_pages_transferred(void) | |
221 | { | |
222 | return acct_info.skipped_pages; | |
223 | } | |
224 | ||
004d4c10 OW |
225 | uint64_t norm_mig_bytes_transferred(void) |
226 | { | |
227 | return acct_info.norm_pages * TARGET_PAGE_SIZE; | |
228 | } | |
229 | ||
230 | uint64_t norm_mig_pages_transferred(void) | |
231 | { | |
232 | return acct_info.norm_pages; | |
233 | } | |
234 | ||
f36d55af OW |
235 | uint64_t xbzrle_mig_bytes_transferred(void) |
236 | { | |
237 | return acct_info.xbzrle_bytes; | |
238 | } | |
239 | ||
240 | uint64_t xbzrle_mig_pages_transferred(void) | |
241 | { | |
242 | return acct_info.xbzrle_pages; | |
243 | } | |
244 | ||
245 | uint64_t xbzrle_mig_pages_cache_miss(void) | |
246 | { | |
247 | return acct_info.xbzrle_cache_miss; | |
248 | } | |
249 | ||
250 | uint64_t xbzrle_mig_pages_overflow(void) | |
251 | { | |
252 | return acct_info.xbzrle_overflows; | |
253 | } | |
254 | ||
3f7d7b09 JQ |
255 | static size_t save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, |
256 | int cont, int flag) | |
0c51f43d | 257 | { |
3f7d7b09 JQ |
258 | size_t size; |
259 | ||
260 | qemu_put_be64(f, offset | cont | flag); | |
261 | size = 8; | |
0c51f43d | 262 | |
3f7d7b09 JQ |
263 | if (!cont) { |
264 | qemu_put_byte(f, strlen(block->idstr)); | |
265 | qemu_put_buffer(f, (uint8_t *)block->idstr, | |
266 | strlen(block->idstr)); | |
267 | size += 1 + strlen(block->idstr); | |
268 | } | |
269 | return size; | |
0c51f43d OW |
270 | } |
271 | ||
17ad9b35 OW |
272 | #define ENCODING_FLAG_XBZRLE 0x1 |
273 | ||
274 | static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data, | |
275 | ram_addr_t current_addr, RAMBlock *block, | |
dd051c72 | 276 | ram_addr_t offset, int cont, bool last_stage) |
17ad9b35 OW |
277 | { |
278 | int encoded_len = 0, bytes_sent = -1; | |
279 | uint8_t *prev_cached_page; | |
280 | ||
281 | if (!cache_is_cached(XBZRLE.cache, current_addr)) { | |
dd051c72 | 282 | if (!last_stage) { |
ee0b44aa | 283 | cache_insert(XBZRLE.cache, current_addr, current_data); |
dd051c72 | 284 | } |
f36d55af | 285 | acct_info.xbzrle_cache_miss++; |
17ad9b35 OW |
286 | return -1; |
287 | } | |
288 | ||
289 | prev_cached_page = get_cached_data(XBZRLE.cache, current_addr); | |
290 | ||
291 | /* save current buffer into memory */ | |
292 | memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE); | |
293 | ||
294 | /* XBZRLE encoding (if there is no overflow) */ | |
295 | encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf, | |
296 | TARGET_PAGE_SIZE, XBZRLE.encoded_buf, | |
297 | TARGET_PAGE_SIZE); | |
298 | if (encoded_len == 0) { | |
299 | DPRINTF("Skipping unmodified page\n"); | |
300 | return 0; | |
301 | } else if (encoded_len == -1) { | |
302 | DPRINTF("Overflow\n"); | |
f36d55af | 303 | acct_info.xbzrle_overflows++; |
17ad9b35 OW |
304 | /* update data in the cache */ |
305 | memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE); | |
306 | return -1; | |
307 | } | |
308 | ||
309 | /* we need to update the data in the cache, in order to get the same data */ | |
dd051c72 JQ |
310 | if (!last_stage) { |
311 | memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE); | |
312 | } | |
17ad9b35 OW |
313 | |
314 | /* Send XBZRLE based compressed page */ | |
3f7d7b09 | 315 | bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE); |
17ad9b35 OW |
316 | qemu_put_byte(f, ENCODING_FLAG_XBZRLE); |
317 | qemu_put_be16(f, encoded_len); | |
318 | qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len); | |
3f7d7b09 | 319 | bytes_sent += encoded_len + 1 + 2; |
f36d55af OW |
320 | acct_info.xbzrle_pages++; |
321 | acct_info.xbzrle_bytes += bytes_sent; | |
17ad9b35 OW |
322 | |
323 | return bytes_sent; | |
324 | } | |
325 | ||
b23a9a5c JQ |
326 | |
327 | /* This is the last block that we have visited serching for dirty pages | |
328 | */ | |
329 | static RAMBlock *last_seen_block; | |
5f718a15 JQ |
330 | /* This is the last block from where we have sent data */ |
331 | static RAMBlock *last_sent_block; | |
760e77ea | 332 | static ram_addr_t last_offset; |
c6bf8e0e JQ |
333 | static unsigned long *migration_bitmap; |
334 | static uint64_t migration_dirty_pages; | |
f798b07f | 335 | static uint32_t last_version; |
78d07ae7 | 336 | static bool ram_bulk_stage; |
760e77ea | 337 | |
4c8ae0f6 JQ |
338 | static inline |
339 | ram_addr_t migration_bitmap_find_and_reset_dirty(MemoryRegion *mr, | |
340 | ram_addr_t start) | |
69268cde | 341 | { |
4c8ae0f6 JQ |
342 | unsigned long base = mr->ram_addr >> TARGET_PAGE_BITS; |
343 | unsigned long nr = base + (start >> TARGET_PAGE_BITS); | |
344 | unsigned long size = base + (int128_get64(mr->size) >> TARGET_PAGE_BITS); | |
c6bf8e0e | 345 | |
70c8652b PL |
346 | unsigned long next; |
347 | ||
348 | if (ram_bulk_stage && nr > base) { | |
349 | next = nr + 1; | |
350 | } else { | |
351 | next = find_next_bit(migration_bitmap, size, nr); | |
352 | } | |
69268cde | 353 | |
4c8ae0f6 JQ |
354 | if (next < size) { |
355 | clear_bit(next, migration_bitmap); | |
c6bf8e0e | 356 | migration_dirty_pages--; |
69268cde | 357 | } |
4c8ae0f6 | 358 | return (next - base) << TARGET_PAGE_BITS; |
69268cde JQ |
359 | } |
360 | ||
c6bf8e0e JQ |
361 | static inline bool migration_bitmap_set_dirty(MemoryRegion *mr, |
362 | ram_addr_t offset) | |
e44d26c8 | 363 | { |
c6bf8e0e JQ |
364 | bool ret; |
365 | int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS; | |
e44d26c8 | 366 | |
c6bf8e0e JQ |
367 | ret = test_and_set_bit(nr, migration_bitmap); |
368 | ||
369 | if (!ret) { | |
370 | migration_dirty_pages++; | |
e44d26c8 | 371 | } |
c6bf8e0e | 372 | return ret; |
e44d26c8 JQ |
373 | } |
374 | ||
32c835ba PB |
375 | /* Needs iothread lock! */ |
376 | ||
dd2df737 JQ |
377 | static void migration_bitmap_sync(void) |
378 | { | |
c6bf8e0e JQ |
379 | RAMBlock *block; |
380 | ram_addr_t addr; | |
381 | uint64_t num_dirty_pages_init = migration_dirty_pages; | |
8d017193 JQ |
382 | MigrationState *s = migrate_get_current(); |
383 | static int64_t start_time; | |
7ca1dfad | 384 | static int64_t bytes_xfer_prev; |
8d017193 JQ |
385 | static int64_t num_dirty_pages_period; |
386 | int64_t end_time; | |
7ca1dfad CV |
387 | int64_t bytes_xfer_now; |
388 | ||
389 | if (!bytes_xfer_prev) { | |
390 | bytes_xfer_prev = ram_bytes_transferred(); | |
391 | } | |
8d017193 JQ |
392 | |
393 | if (!start_time) { | |
394 | start_time = qemu_get_clock_ms(rt_clock); | |
395 | } | |
3c12193d JQ |
396 | |
397 | trace_migration_bitmap_sync_start(); | |
1d671369 | 398 | address_space_sync_dirty_bitmap(&address_space_memory); |
c6bf8e0e | 399 | |
a3161038 | 400 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c6bf8e0e | 401 | for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) { |
ece79318 JQ |
402 | if (memory_region_test_and_clear_dirty(block->mr, |
403 | addr, TARGET_PAGE_SIZE, | |
404 | DIRTY_MEMORY_MIGRATION)) { | |
c6bf8e0e JQ |
405 | migration_bitmap_set_dirty(block->mr, addr); |
406 | } | |
407 | } | |
c6bf8e0e JQ |
408 | } |
409 | trace_migration_bitmap_sync_end(migration_dirty_pages | |
3c12193d | 410 | - num_dirty_pages_init); |
8d017193 JQ |
411 | num_dirty_pages_period += migration_dirty_pages - num_dirty_pages_init; |
412 | end_time = qemu_get_clock_ms(rt_clock); | |
413 | ||
414 | /* more than 1 second = 1000 millisecons */ | |
415 | if (end_time > start_time + 1000) { | |
7ca1dfad CV |
416 | if (migrate_auto_converge()) { |
417 | /* The following detection logic can be refined later. For now: | |
418 | Check to see if the dirtied bytes is 50% more than the approx. | |
419 | amount of bytes that just got transferred since the last time we | |
420 | were in this routine. If that happens >N times (for now N==4) | |
421 | we turn on the throttle down logic */ | |
422 | bytes_xfer_now = ram_bytes_transferred(); | |
423 | if (s->dirty_pages_rate && | |
424 | (num_dirty_pages_period * TARGET_PAGE_SIZE > | |
425 | (bytes_xfer_now - bytes_xfer_prev)/2) && | |
426 | (dirty_rate_high_cnt++ > 4)) { | |
427 | trace_migration_throttle(); | |
428 | mig_throttle_on = true; | |
429 | dirty_rate_high_cnt = 0; | |
430 | } | |
431 | bytes_xfer_prev = bytes_xfer_now; | |
432 | } else { | |
433 | mig_throttle_on = false; | |
434 | } | |
8d017193 JQ |
435 | s->dirty_pages_rate = num_dirty_pages_period * 1000 |
436 | / (end_time - start_time); | |
90f8ae72 | 437 | s->dirty_bytes_rate = s->dirty_pages_rate * TARGET_PAGE_SIZE; |
8d017193 JQ |
438 | start_time = end_time; |
439 | num_dirty_pages_period = 0; | |
440 | } | |
dd2df737 JQ |
441 | } |
442 | ||
6c779f22 OW |
443 | /* |
444 | * ram_save_block: Writes a page of memory to the stream f | |
445 | * | |
b823ceaa JQ |
446 | * Returns: The number of bytes written. |
447 | * 0 means no dirty pages | |
6c779f22 OW |
448 | */ |
449 | ||
dd051c72 | 450 | static int ram_save_block(QEMUFile *f, bool last_stage) |
ad96090a | 451 | { |
b23a9a5c | 452 | RAMBlock *block = last_seen_block; |
e44359c3 | 453 | ram_addr_t offset = last_offset; |
4c8ae0f6 | 454 | bool complete_round = false; |
b823ceaa | 455 | int bytes_sent = 0; |
71c510e2 | 456 | MemoryRegion *mr; |
17ad9b35 | 457 | ram_addr_t current_addr; |
ad96090a | 458 | |
e44359c3 | 459 | if (!block) |
a3161038 | 460 | block = QTAILQ_FIRST(&ram_list.blocks); |
e44359c3 | 461 | |
4c8ae0f6 | 462 | while (true) { |
71c510e2 | 463 | mr = block->mr; |
4c8ae0f6 JQ |
464 | offset = migration_bitmap_find_and_reset_dirty(mr, offset); |
465 | if (complete_round && block == last_seen_block && | |
466 | offset >= last_offset) { | |
467 | break; | |
468 | } | |
469 | if (offset >= block->length) { | |
470 | offset = 0; | |
471 | block = QTAILQ_NEXT(block, next); | |
472 | if (!block) { | |
473 | block = QTAILQ_FIRST(&ram_list.blocks); | |
474 | complete_round = true; | |
78d07ae7 | 475 | ram_bulk_stage = false; |
4c8ae0f6 JQ |
476 | } |
477 | } else { | |
ad96090a | 478 | uint8_t *p; |
5f718a15 | 479 | int cont = (block == last_sent_block) ? |
b23a9a5c | 480 | RAM_SAVE_FLAG_CONTINUE : 0; |
ad96090a | 481 | |
71c510e2 | 482 | p = memory_region_get_ram_ptr(mr) + offset; |
ad96090a | 483 | |
b823ceaa JQ |
484 | /* In doubt sent page as normal */ |
485 | bytes_sent = -1; | |
3edcd7e6 | 486 | if (is_zero_page(p)) { |
004d4c10 | 487 | acct_info.dup_pages++; |
9ef051e5 PL |
488 | bytes_sent = save_block_hdr(f, block, offset, cont, |
489 | RAM_SAVE_FLAG_COMPRESS); | |
490 | qemu_put_byte(f, 0); | |
491 | bytes_sent++; | |
5cc11c46 | 492 | } else if (!ram_bulk_stage && migrate_use_xbzrle()) { |
17ad9b35 OW |
493 | current_addr = block->offset + offset; |
494 | bytes_sent = save_xbzrle_page(f, p, current_addr, block, | |
dd051c72 JQ |
495 | offset, cont, last_stage); |
496 | if (!last_stage) { | |
497 | p = get_cached_data(XBZRLE.cache, current_addr); | |
498 | } | |
17ad9b35 OW |
499 | } |
500 | ||
b823ceaa | 501 | /* XBZRLE overflow or normal page */ |
17ad9b35 | 502 | if (bytes_sent == -1) { |
3f7d7b09 | 503 | bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); |
500f0061 | 504 | qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE); |
3f7d7b09 | 505 | bytes_sent += TARGET_PAGE_SIZE; |
004d4c10 | 506 | acct_info.norm_pages++; |
ad96090a BS |
507 | } |
508 | ||
17ad9b35 | 509 | /* if page is unmodified, continue to the next */ |
b823ceaa | 510 | if (bytes_sent > 0) { |
5f718a15 | 511 | last_sent_block = block; |
17ad9b35 OW |
512 | break; |
513 | } | |
ad96090a | 514 | } |
4c8ae0f6 | 515 | } |
b23a9a5c | 516 | last_seen_block = block; |
e44359c3 | 517 | last_offset = offset; |
ad96090a | 518 | |
3fc250b4 | 519 | return bytes_sent; |
ad96090a BS |
520 | } |
521 | ||
522 | static uint64_t bytes_transferred; | |
523 | ||
2b0ce079 MH |
524 | void acct_update_position(QEMUFile *f, size_t size, bool zero) |
525 | { | |
526 | uint64_t pages = size / TARGET_PAGE_SIZE; | |
527 | if (zero) { | |
528 | acct_info.dup_pages += pages; | |
529 | } else { | |
530 | acct_info.norm_pages += pages; | |
531 | bytes_transferred += size; | |
532 | qemu_update_position(f, size); | |
533 | } | |
534 | } | |
535 | ||
ad96090a BS |
536 | static ram_addr_t ram_save_remaining(void) |
537 | { | |
c6bf8e0e | 538 | return migration_dirty_pages; |
ad96090a BS |
539 | } |
540 | ||
541 | uint64_t ram_bytes_remaining(void) | |
542 | { | |
543 | return ram_save_remaining() * TARGET_PAGE_SIZE; | |
544 | } | |
545 | ||
546 | uint64_t ram_bytes_transferred(void) | |
547 | { | |
548 | return bytes_transferred; | |
549 | } | |
550 | ||
551 | uint64_t ram_bytes_total(void) | |
552 | { | |
d17b5288 AW |
553 | RAMBlock *block; |
554 | uint64_t total = 0; | |
555 | ||
a3161038 | 556 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
d17b5288 AW |
557 | total += block->length; |
558 | ||
559 | return total; | |
ad96090a BS |
560 | } |
561 | ||
8e21cd32 OW |
562 | static void migration_end(void) |
563 | { | |
244eaa75 PB |
564 | if (migration_bitmap) { |
565 | memory_global_dirty_log_stop(); | |
566 | g_free(migration_bitmap); | |
567 | migration_bitmap = NULL; | |
568 | } | |
17ad9b35 | 569 | |
244eaa75 | 570 | if (XBZRLE.cache) { |
17ad9b35 OW |
571 | cache_fini(XBZRLE.cache); |
572 | g_free(XBZRLE.cache); | |
573 | g_free(XBZRLE.encoded_buf); | |
574 | g_free(XBZRLE.current_buf); | |
575 | g_free(XBZRLE.decoded_buf); | |
576 | XBZRLE.cache = NULL; | |
577 | } | |
8e21cd32 OW |
578 | } |
579 | ||
9b5bfab0 JQ |
580 | static void ram_migration_cancel(void *opaque) |
581 | { | |
582 | migration_end(); | |
583 | } | |
584 | ||
5a170775 JQ |
585 | static void reset_ram_globals(void) |
586 | { | |
b23a9a5c | 587 | last_seen_block = NULL; |
5f718a15 | 588 | last_sent_block = NULL; |
5a170775 | 589 | last_offset = 0; |
f798b07f | 590 | last_version = ram_list.version; |
78d07ae7 | 591 | ram_bulk_stage = true; |
5a170775 JQ |
592 | } |
593 | ||
4508bd9e JQ |
594 | #define MAX_WAIT 50 /* ms, half buffered_file limit */ |
595 | ||
d1315aac | 596 | static int ram_save_setup(QEMUFile *f, void *opaque) |
ad96090a | 597 | { |
d1315aac | 598 | RAMBlock *block; |
c6bf8e0e JQ |
599 | int64_t ram_pages = last_ram_offset() >> TARGET_PAGE_BITS; |
600 | ||
601 | migration_bitmap = bitmap_new(ram_pages); | |
7ec81e56 | 602 | bitmap_set(migration_bitmap, 0, ram_pages); |
c6bf8e0e | 603 | migration_dirty_pages = ram_pages; |
7ca1dfad CV |
604 | mig_throttle_on = false; |
605 | dirty_rate_high_cnt = 0; | |
ad96090a | 606 | |
17ad9b35 OW |
607 | if (migrate_use_xbzrle()) { |
608 | XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() / | |
609 | TARGET_PAGE_SIZE, | |
610 | TARGET_PAGE_SIZE); | |
611 | if (!XBZRLE.cache) { | |
612 | DPRINTF("Error creating cache\n"); | |
613 | return -1; | |
614 | } | |
615 | XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE); | |
616 | XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE); | |
004d4c10 | 617 | acct_clear(); |
17ad9b35 OW |
618 | } |
619 | ||
9b095037 PB |
620 | qemu_mutex_lock_iothread(); |
621 | qemu_mutex_lock_ramlist(); | |
622 | bytes_transferred = 0; | |
623 | reset_ram_globals(); | |
624 | ||
d1315aac | 625 | memory_global_dirty_log_start(); |
c6bf8e0e | 626 | migration_bitmap_sync(); |
9b095037 | 627 | qemu_mutex_unlock_iothread(); |
ad96090a | 628 | |
d1315aac | 629 | qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE); |
97ab12d4 | 630 | |
a3161038 | 631 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
d1315aac JQ |
632 | qemu_put_byte(f, strlen(block->idstr)); |
633 | qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr)); | |
634 | qemu_put_be64(f, block->length); | |
ad96090a BS |
635 | } |
636 | ||
b2a8658e | 637 | qemu_mutex_unlock_ramlist(); |
d1315aac JQ |
638 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
16310a3c | 643 | static int ram_save_iterate(QEMUFile *f, void *opaque) |
d1315aac | 644 | { |
d1315aac JQ |
645 | int ret; |
646 | int i; | |
e4ed1541 | 647 | int64_t t0; |
b823ceaa | 648 | int total_sent = 0; |
d1315aac | 649 | |
b2a8658e UD |
650 | qemu_mutex_lock_ramlist(); |
651 | ||
f798b07f UD |
652 | if (ram_list.version != last_version) { |
653 | reset_ram_globals(); | |
654 | } | |
655 | ||
e4ed1541 | 656 | t0 = qemu_get_clock_ns(rt_clock); |
4508bd9e | 657 | i = 0; |
2975725f | 658 | while ((ret = qemu_file_rate_limit(f)) == 0) { |
3fc250b4 | 659 | int bytes_sent; |
ad96090a | 660 | |
dd051c72 | 661 | bytes_sent = ram_save_block(f, false); |
6c779f22 | 662 | /* no more blocks to sent */ |
b823ceaa | 663 | if (bytes_sent == 0) { |
ad96090a BS |
664 | break; |
665 | } | |
b823ceaa | 666 | total_sent += bytes_sent; |
004d4c10 | 667 | acct_info.iterations++; |
7ca1dfad | 668 | check_guest_throttling(); |
4508bd9e JQ |
669 | /* we want to check in the 1st loop, just in case it was the 1st time |
670 | and we had to sync the dirty bitmap. | |
671 | qemu_get_clock_ns() is a bit expensive, so we only check each some | |
672 | iterations | |
673 | */ | |
674 | if ((i & 63) == 0) { | |
e4ed1541 | 675 | uint64_t t1 = (qemu_get_clock_ns(rt_clock) - t0) / 1000000; |
4508bd9e | 676 | if (t1 > MAX_WAIT) { |
ef37a699 | 677 | DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n", |
4508bd9e JQ |
678 | t1, i); |
679 | break; | |
680 | } | |
681 | } | |
682 | i++; | |
ad96090a BS |
683 | } |
684 | ||
fb3409de PB |
685 | qemu_mutex_unlock_ramlist(); |
686 | ||
2975725f | 687 | if (ret < 0) { |
b823ceaa | 688 | bytes_transferred += total_sent; |
2975725f JQ |
689 | return ret; |
690 | } | |
691 | ||
16310a3c | 692 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
b823ceaa JQ |
693 | total_sent += 8; |
694 | bytes_transferred += total_sent; | |
16310a3c | 695 | |
b823ceaa | 696 | return total_sent; |
16310a3c JQ |
697 | } |
698 | ||
699 | static int ram_save_complete(QEMUFile *f, void *opaque) | |
700 | { | |
b2a8658e | 701 | qemu_mutex_lock_ramlist(); |
9c339485 | 702 | migration_bitmap_sync(); |
b2a8658e | 703 | |
ad96090a | 704 | /* try transferring iterative blocks of memory */ |
3a697f69 | 705 | |
16310a3c | 706 | /* flush all remaining blocks regardless of rate limiting */ |
6c779f22 | 707 | while (true) { |
3fc250b4 PR |
708 | int bytes_sent; |
709 | ||
dd051c72 | 710 | bytes_sent = ram_save_block(f, true); |
6c779f22 | 711 | /* no more blocks to sent */ |
b823ceaa | 712 | if (bytes_sent == 0) { |
6c779f22 | 713 | break; |
ad96090a | 714 | } |
16310a3c | 715 | bytes_transferred += bytes_sent; |
ad96090a | 716 | } |
244eaa75 | 717 | migration_end(); |
ad96090a | 718 | |
b2a8658e | 719 | qemu_mutex_unlock_ramlist(); |
ad96090a BS |
720 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
721 | ||
5b3c9638 | 722 | return 0; |
ad96090a BS |
723 | } |
724 | ||
e4ed1541 JQ |
725 | static uint64_t ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size) |
726 | { | |
727 | uint64_t remaining_size; | |
728 | ||
729 | remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE; | |
730 | ||
731 | if (remaining_size < max_size) { | |
32c835ba | 732 | qemu_mutex_lock_iothread(); |
e4ed1541 | 733 | migration_bitmap_sync(); |
32c835ba | 734 | qemu_mutex_unlock_iothread(); |
e4ed1541 JQ |
735 | remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE; |
736 | } | |
737 | return remaining_size; | |
738 | } | |
739 | ||
17ad9b35 OW |
740 | static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host) |
741 | { | |
742 | int ret, rc = 0; | |
743 | unsigned int xh_len; | |
744 | int xh_flags; | |
745 | ||
746 | if (!XBZRLE.decoded_buf) { | |
747 | XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE); | |
748 | } | |
749 | ||
750 | /* extract RLE header */ | |
751 | xh_flags = qemu_get_byte(f); | |
752 | xh_len = qemu_get_be16(f); | |
753 | ||
754 | if (xh_flags != ENCODING_FLAG_XBZRLE) { | |
755 | fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n"); | |
756 | return -1; | |
757 | } | |
758 | ||
759 | if (xh_len > TARGET_PAGE_SIZE) { | |
760 | fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n"); | |
761 | return -1; | |
762 | } | |
763 | /* load data and decode */ | |
764 | qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len); | |
765 | ||
766 | /* decode RLE */ | |
767 | ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host, | |
768 | TARGET_PAGE_SIZE); | |
769 | if (ret == -1) { | |
770 | fprintf(stderr, "Failed to load XBZRLE page - decode error!\n"); | |
771 | rc = -1; | |
772 | } else if (ret > TARGET_PAGE_SIZE) { | |
773 | fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n", | |
774 | ret, TARGET_PAGE_SIZE); | |
775 | abort(); | |
776 | } | |
777 | ||
778 | return rc; | |
779 | } | |
780 | ||
a55bbe31 AW |
781 | static inline void *host_from_stream_offset(QEMUFile *f, |
782 | ram_addr_t offset, | |
783 | int flags) | |
784 | { | |
785 | static RAMBlock *block = NULL; | |
786 | char id[256]; | |
787 | uint8_t len; | |
788 | ||
789 | if (flags & RAM_SAVE_FLAG_CONTINUE) { | |
790 | if (!block) { | |
791 | fprintf(stderr, "Ack, bad migration stream!\n"); | |
792 | return NULL; | |
793 | } | |
794 | ||
dc94a7ed | 795 | return memory_region_get_ram_ptr(block->mr) + offset; |
a55bbe31 AW |
796 | } |
797 | ||
798 | len = qemu_get_byte(f); | |
799 | qemu_get_buffer(f, (uint8_t *)id, len); | |
800 | id[len] = 0; | |
801 | ||
a3161038 | 802 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
a55bbe31 | 803 | if (!strncmp(id, block->idstr, sizeof(id))) |
dc94a7ed | 804 | return memory_region_get_ram_ptr(block->mr) + offset; |
a55bbe31 AW |
805 | } |
806 | ||
807 | fprintf(stderr, "Can't find block %s!\n", id); | |
808 | return NULL; | |
809 | } | |
810 | ||
7908c78d | 811 | static int ram_load(QEMUFile *f, void *opaque, int version_id) |
ad96090a BS |
812 | { |
813 | ram_addr_t addr; | |
3a697f69 | 814 | int flags, ret = 0; |
42802d47 | 815 | int error; |
3a697f69 OW |
816 | static uint64_t seq_iter; |
817 | ||
818 | seq_iter++; | |
ad96090a | 819 | |
f09f2189 | 820 | if (version_id < 4 || version_id > 4) { |
ad96090a BS |
821 | return -EINVAL; |
822 | } | |
823 | ||
824 | do { | |
825 | addr = qemu_get_be64(f); | |
826 | ||
827 | flags = addr & ~TARGET_PAGE_MASK; | |
828 | addr &= TARGET_PAGE_MASK; | |
829 | ||
830 | if (flags & RAM_SAVE_FLAG_MEM_SIZE) { | |
f09f2189 | 831 | if (version_id == 4) { |
97ab12d4 AW |
832 | /* Synchronize RAM block list */ |
833 | char id[256]; | |
834 | ram_addr_t length; | |
835 | ram_addr_t total_ram_bytes = addr; | |
836 | ||
837 | while (total_ram_bytes) { | |
838 | RAMBlock *block; | |
839 | uint8_t len; | |
840 | ||
841 | len = qemu_get_byte(f); | |
842 | qemu_get_buffer(f, (uint8_t *)id, len); | |
843 | id[len] = 0; | |
844 | length = qemu_get_be64(f); | |
845 | ||
a3161038 | 846 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
97ab12d4 | 847 | if (!strncmp(id, block->idstr, sizeof(id))) { |
3a697f69 | 848 | if (block->length != length) { |
6bedfe94 SW |
849 | fprintf(stderr, |
850 | "Length mismatch: %s: " RAM_ADDR_FMT | |
851 | " in != " RAM_ADDR_FMT "\n", id, length, | |
87d2f825 | 852 | block->length); |
3a697f69 OW |
853 | ret = -EINVAL; |
854 | goto done; | |
855 | } | |
97ab12d4 AW |
856 | break; |
857 | } | |
858 | } | |
859 | ||
860 | if (!block) { | |
fb787f81 AW |
861 | fprintf(stderr, "Unknown ramblock \"%s\", cannot " |
862 | "accept migration\n", id); | |
3a697f69 OW |
863 | ret = -EINVAL; |
864 | goto done; | |
97ab12d4 AW |
865 | } |
866 | ||
867 | total_ram_bytes -= length; | |
868 | } | |
ad96090a BS |
869 | } |
870 | } | |
871 | ||
872 | if (flags & RAM_SAVE_FLAG_COMPRESS) { | |
97ab12d4 AW |
873 | void *host; |
874 | uint8_t ch; | |
875 | ||
f09f2189 | 876 | host = host_from_stream_offset(f, addr, flags); |
492fb99c MT |
877 | if (!host) { |
878 | return -EINVAL; | |
879 | } | |
97ab12d4 | 880 | |
97ab12d4 | 881 | ch = qemu_get_byte(f); |
211ea740 PL |
882 | if (ch != 0 || !is_zero_page(host)) { |
883 | memset(host, ch, TARGET_PAGE_SIZE); | |
ad96090a | 884 | #ifndef _WIN32 |
211ea740 PL |
885 | if (ch == 0 && |
886 | (!kvm_enabled() || kvm_has_sync_mmu()) && | |
887 | getpagesize() <= TARGET_PAGE_SIZE) { | |
888 | qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED); | |
889 | } | |
ad96090a | 890 | #endif |
211ea740 | 891 | } |
ad96090a | 892 | } else if (flags & RAM_SAVE_FLAG_PAGE) { |
97ab12d4 AW |
893 | void *host; |
894 | ||
f09f2189 | 895 | host = host_from_stream_offset(f, addr, flags); |
0ff1f9f5 OW |
896 | if (!host) { |
897 | return -EINVAL; | |
898 | } | |
97ab12d4 | 899 | |
97ab12d4 | 900 | qemu_get_buffer(f, host, TARGET_PAGE_SIZE); |
17ad9b35 | 901 | } else if (flags & RAM_SAVE_FLAG_XBZRLE) { |
17ad9b35 OW |
902 | void *host = host_from_stream_offset(f, addr, flags); |
903 | if (!host) { | |
904 | return -EINVAL; | |
905 | } | |
906 | ||
907 | if (load_xbzrle(f, addr, host) < 0) { | |
908 | ret = -EINVAL; | |
909 | goto done; | |
910 | } | |
ad96090a | 911 | } |
42802d47 JQ |
912 | error = qemu_file_get_error(f); |
913 | if (error) { | |
3a697f69 OW |
914 | ret = error; |
915 | goto done; | |
ad96090a BS |
916 | } |
917 | } while (!(flags & RAM_SAVE_FLAG_EOS)); | |
918 | ||
3a697f69 | 919 | done: |
ef37a699 IM |
920 | DPRINTF("Completed load of VM with exit code %d seq iteration " |
921 | "%" PRIu64 "\n", ret, seq_iter); | |
3a697f69 | 922 | return ret; |
ad96090a BS |
923 | } |
924 | ||
7908c78d | 925 | SaveVMHandlers savevm_ram_handlers = { |
d1315aac | 926 | .save_live_setup = ram_save_setup, |
16310a3c JQ |
927 | .save_live_iterate = ram_save_iterate, |
928 | .save_live_complete = ram_save_complete, | |
e4ed1541 | 929 | .save_live_pending = ram_save_pending, |
7908c78d | 930 | .load_state = ram_load, |
9b5bfab0 | 931 | .cancel = ram_migration_cancel, |
7908c78d JQ |
932 | }; |
933 | ||
0dfa5ef9 IY |
934 | struct soundhw { |
935 | const char *name; | |
936 | const char *descr; | |
937 | int enabled; | |
938 | int isa; | |
939 | union { | |
4a0f031d | 940 | int (*init_isa) (ISABus *bus); |
0dfa5ef9 IY |
941 | int (*init_pci) (PCIBus *bus); |
942 | } init; | |
943 | }; | |
944 | ||
36cd6f6f PB |
945 | static struct soundhw soundhw[9]; |
946 | static int soundhw_count; | |
ad96090a | 947 | |
36cd6f6f PB |
948 | void isa_register_soundhw(const char *name, const char *descr, |
949 | int (*init_isa)(ISABus *bus)) | |
950 | { | |
951 | assert(soundhw_count < ARRAY_SIZE(soundhw) - 1); | |
952 | soundhw[soundhw_count].name = name; | |
953 | soundhw[soundhw_count].descr = descr; | |
954 | soundhw[soundhw_count].isa = 1; | |
955 | soundhw[soundhw_count].init.init_isa = init_isa; | |
956 | soundhw_count++; | |
957 | } | |
ad96090a | 958 | |
36cd6f6f PB |
959 | void pci_register_soundhw(const char *name, const char *descr, |
960 | int (*init_pci)(PCIBus *bus)) | |
961 | { | |
962 | assert(soundhw_count < ARRAY_SIZE(soundhw) - 1); | |
963 | soundhw[soundhw_count].name = name; | |
964 | soundhw[soundhw_count].descr = descr; | |
965 | soundhw[soundhw_count].isa = 0; | |
966 | soundhw[soundhw_count].init.init_pci = init_pci; | |
967 | soundhw_count++; | |
968 | } | |
ad96090a BS |
969 | |
970 | void select_soundhw(const char *optarg) | |
971 | { | |
972 | struct soundhw *c; | |
973 | ||
c8057f95 | 974 | if (is_help_option(optarg)) { |
ad96090a BS |
975 | show_valid_cards: |
976 | ||
36cd6f6f PB |
977 | if (soundhw_count) { |
978 | printf("Valid sound card names (comma separated):\n"); | |
979 | for (c = soundhw; c->name; ++c) { | |
980 | printf ("%-11s %s\n", c->name, c->descr); | |
981 | } | |
982 | printf("\n-soundhw all will enable all of the above\n"); | |
983 | } else { | |
984 | printf("Machine has no user-selectable audio hardware " | |
985 | "(it may or may not have always-present audio hardware).\n"); | |
ad96090a | 986 | } |
c8057f95 | 987 | exit(!is_help_option(optarg)); |
ad96090a BS |
988 | } |
989 | else { | |
990 | size_t l; | |
991 | const char *p; | |
992 | char *e; | |
993 | int bad_card = 0; | |
994 | ||
995 | if (!strcmp(optarg, "all")) { | |
996 | for (c = soundhw; c->name; ++c) { | |
997 | c->enabled = 1; | |
998 | } | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | p = optarg; | |
1003 | while (*p) { | |
1004 | e = strchr(p, ','); | |
1005 | l = !e ? strlen(p) : (size_t) (e - p); | |
1006 | ||
1007 | for (c = soundhw; c->name; ++c) { | |
1008 | if (!strncmp(c->name, p, l) && !c->name[l]) { | |
1009 | c->enabled = 1; | |
1010 | break; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | if (!c->name) { | |
1015 | if (l > 80) { | |
1016 | fprintf(stderr, | |
1017 | "Unknown sound card name (too big to show)\n"); | |
1018 | } | |
1019 | else { | |
1020 | fprintf(stderr, "Unknown sound card name `%.*s'\n", | |
1021 | (int) l, p); | |
1022 | } | |
1023 | bad_card = 1; | |
1024 | } | |
1025 | p += l + (e != NULL); | |
1026 | } | |
1027 | ||
1028 | if (bad_card) { | |
1029 | goto show_valid_cards; | |
1030 | } | |
1031 | } | |
1032 | } | |
0dfa5ef9 | 1033 | |
f81222bc | 1034 | void audio_init(void) |
0dfa5ef9 IY |
1035 | { |
1036 | struct soundhw *c; | |
f81222bc PB |
1037 | ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL); |
1038 | PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL); | |
0dfa5ef9 IY |
1039 | |
1040 | for (c = soundhw; c->name; ++c) { | |
1041 | if (c->enabled) { | |
1042 | if (c->isa) { | |
f81222bc PB |
1043 | if (!isa_bus) { |
1044 | fprintf(stderr, "ISA bus not available for %s\n", c->name); | |
1045 | exit(1); | |
0dfa5ef9 | 1046 | } |
f81222bc | 1047 | c->init.init_isa(isa_bus); |
0dfa5ef9 | 1048 | } else { |
f81222bc PB |
1049 | if (!pci_bus) { |
1050 | fprintf(stderr, "PCI bus not available for %s\n", c->name); | |
1051 | exit(1); | |
0dfa5ef9 | 1052 | } |
f81222bc | 1053 | c->init.init_pci(pci_bus); |
0dfa5ef9 IY |
1054 | } |
1055 | } | |
1056 | } | |
1057 | } | |
ad96090a BS |
1058 | |
1059 | int qemu_uuid_parse(const char *str, uint8_t *uuid) | |
1060 | { | |
1061 | int ret; | |
1062 | ||
1063 | if (strlen(str) != 36) { | |
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3], | |
1068 | &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9], | |
1069 | &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], | |
1070 | &uuid[15]); | |
1071 | ||
1072 | if (ret != 16) { | |
1073 | return -1; | |
1074 | } | |
1075 | #ifdef TARGET_I386 | |
ebc85e3f | 1076 | smbios_add_field(1, offsetof(struct smbios_type_1, uuid), uuid, 16); |
ad96090a BS |
1077 | #endif |
1078 | return 0; | |
1079 | } | |
1080 | ||
0c764a9d | 1081 | void do_acpitable_option(const QemuOpts *opts) |
ad96090a BS |
1082 | { |
1083 | #ifdef TARGET_I386 | |
23084327 LE |
1084 | Error *err = NULL; |
1085 | ||
1086 | acpi_table_add(opts, &err); | |
1087 | if (err) { | |
1088 | fprintf(stderr, "Wrong acpi table provided: %s\n", | |
1089 | error_get_pretty(err)); | |
1090 | error_free(err); | |
ad96090a BS |
1091 | exit(1); |
1092 | } | |
1093 | #endif | |
1094 | } | |
1095 | ||
1096 | void do_smbios_option(const char *optarg) | |
1097 | { | |
1098 | #ifdef TARGET_I386 | |
1099 | if (smbios_entry_add(optarg) < 0) { | |
ad96090a BS |
1100 | exit(1); |
1101 | } | |
1102 | #endif | |
1103 | } | |
1104 | ||
1105 | void cpudef_init(void) | |
1106 | { | |
1107 | #if defined(cpudef_setup) | |
1108 | cpudef_setup(); /* parse cpu definitions in target config file */ | |
1109 | #endif | |
1110 | } | |
1111 | ||
303d4e86 AP |
1112 | int tcg_available(void) |
1113 | { | |
1114 | return 1; | |
1115 | } | |
1116 | ||
ad96090a BS |
1117 | int kvm_available(void) |
1118 | { | |
1119 | #ifdef CONFIG_KVM | |
1120 | return 1; | |
1121 | #else | |
1122 | return 0; | |
1123 | #endif | |
1124 | } | |
1125 | ||
1126 | int xen_available(void) | |
1127 | { | |
1128 | #ifdef CONFIG_XEN | |
1129 | return 1; | |
1130 | #else | |
1131 | return 0; | |
1132 | #endif | |
1133 | } | |
99afc91d DB |
1134 | |
1135 | ||
1136 | TargetInfo *qmp_query_target(Error **errp) | |
1137 | { | |
1138 | TargetInfo *info = g_malloc0(sizeof(*info)); | |
1139 | ||
c02a9552 | 1140 | info->arch = g_strdup(TARGET_NAME); |
99afc91d DB |
1141 | |
1142 | return info; | |
1143 | } | |
7ca1dfad CV |
1144 | |
1145 | /* Stub function that's gets run on the vcpu when its brought out of the | |
1146 | VM to run inside qemu via async_run_on_cpu()*/ | |
1147 | static void mig_sleep_cpu(void *opq) | |
1148 | { | |
1149 | qemu_mutex_unlock_iothread(); | |
1150 | g_usleep(30*1000); | |
1151 | qemu_mutex_lock_iothread(); | |
1152 | } | |
1153 | ||
1154 | /* To reduce the dirty rate explicitly disallow the VCPUs from spending | |
1155 | much time in the VM. The migration thread will try to catchup. | |
1156 | Workload will experience a performance drop. | |
1157 | */ | |
1158 | static void mig_throttle_cpu_down(CPUState *cpu, void *data) | |
1159 | { | |
1160 | async_run_on_cpu(cpu, mig_sleep_cpu, NULL); | |
1161 | } | |
1162 | ||
1163 | static void mig_throttle_guest_down(void) | |
1164 | { | |
1165 | qemu_mutex_lock_iothread(); | |
1166 | qemu_for_each_cpu(mig_throttle_cpu_down, NULL); | |
1167 | qemu_mutex_unlock_iothread(); | |
1168 | } | |
1169 | ||
1170 | static void check_guest_throttling(void) | |
1171 | { | |
1172 | static int64_t t0; | |
1173 | int64_t t1; | |
1174 | ||
1175 | if (!mig_throttle_on) { | |
1176 | return; | |
1177 | } | |
1178 | ||
1179 | if (!t0) { | |
1180 | t0 = qemu_get_clock_ns(rt_clock); | |
1181 | return; | |
1182 | } | |
1183 | ||
1184 | t1 = qemu_get_clock_ns(rt_clock); | |
1185 | ||
1186 | /* If it has been more than 40 ms since the last time the guest | |
1187 | * was throttled then do it again. | |
1188 | */ | |
1189 | if (40 < (t1-t0)/1000000) { | |
1190 | mig_throttle_guest_down(); | |
1191 | t0 = t1; | |
1192 | } | |
1193 | } |