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> 26 #include <stdlib.h> 27 #ifndef _WIN32 28 #include <sys/types.h> 29 #include <sys/mman.h> 30 #endif 31 #include "config.h" 32 #include "monitor.h" 33 #include "sysemu.h" 34 #include "arch_init.h" 35 #include "audio/audio.h" 36 #include "hw/pc.h" 37 #include "hw/pci.h" 38 #include "hw/audiodev.h" 39 #include "kvm.h" 40 #include "migration.h" 41 #include "net.h" 42 #include "gdbstub.h" 43 #include "hw/smbios.h" 44 #include "exec-memory.h" 45 #include "hw/pcspk.h" 46 #include "qemu/page_cache.h" 47 #include "qmp-commands.h" 48 49 #ifdef DEBUG_ARCH_INIT 50 #define DPRINTF(fmt, ...) \ 51 do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0) 52 #else 53 #define DPRINTF(fmt, ...) \ 54 do { } while (0) 55 #endif 56 57 #ifdef TARGET_SPARC 58 int graphic_width = 1024; 59 int graphic_height = 768; 60 int graphic_depth = 8; 61 #else 62 int graphic_width = 800; 63 int graphic_height = 600; 64 int graphic_depth = 15; 65 #endif 66 67 68 #if defined(TARGET_ALPHA) 69 #define QEMU_ARCH QEMU_ARCH_ALPHA 70 #elif defined(TARGET_ARM) 71 #define QEMU_ARCH QEMU_ARCH_ARM 72 #elif defined(TARGET_CRIS) 73 #define QEMU_ARCH QEMU_ARCH_CRIS 74 #elif defined(TARGET_I386) 75 #define QEMU_ARCH QEMU_ARCH_I386 76 #elif defined(TARGET_M68K) 77 #define QEMU_ARCH QEMU_ARCH_M68K 78 #elif defined(TARGET_LM32) 79 #define QEMU_ARCH QEMU_ARCH_LM32 80 #elif defined(TARGET_MICROBLAZE) 81 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE 82 #elif defined(TARGET_MIPS) 83 #define QEMU_ARCH QEMU_ARCH_MIPS 84 #elif defined(TARGET_OPENRISC) 85 #define QEMU_ARCH QEMU_ARCH_OPENRISC 86 #elif defined(TARGET_PPC) 87 #define QEMU_ARCH QEMU_ARCH_PPC 88 #elif defined(TARGET_S390X) 89 #define QEMU_ARCH QEMU_ARCH_S390X 90 #elif defined(TARGET_SH4) 91 #define QEMU_ARCH QEMU_ARCH_SH4 92 #elif defined(TARGET_SPARC) 93 #define QEMU_ARCH QEMU_ARCH_SPARC 94 #elif defined(TARGET_XTENSA) 95 #define QEMU_ARCH QEMU_ARCH_XTENSA 96 #elif defined(TARGET_UNICORE32) 97 #define QEMU_ARCH QEMU_ARCH_UNICORE32 98 #endif 99 100 const uint32_t arch_type = QEMU_ARCH; 101 102 /***********************************************************/ 103 /* ram save/restore */ 104 105 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */ 106 #define RAM_SAVE_FLAG_COMPRESS 0x02 107 #define RAM_SAVE_FLAG_MEM_SIZE 0x04 108 #define RAM_SAVE_FLAG_PAGE 0x08 109 #define RAM_SAVE_FLAG_EOS 0x10 110 #define RAM_SAVE_FLAG_CONTINUE 0x20 111 #define RAM_SAVE_FLAG_XBZRLE 0x40 112 113 #ifdef __ALTIVEC__ 114 #include <altivec.h> 115 #define VECTYPE vector unsigned char 116 #define SPLAT(p) vec_splat(vec_ld(0, p), 0) 117 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2) 118 /* altivec.h may redefine the bool macro as vector type. 119 * Reset it to POSIX semantics. */ 120 #undef bool 121 #define bool _Bool 122 #elif defined __SSE2__ 123 #include <emmintrin.h> 124 #define VECTYPE __m128i 125 #define SPLAT(p) _mm_set1_epi8(*(p)) 126 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF) 127 #else 128 #define VECTYPE unsigned long 129 #define SPLAT(p) (*(p) * (~0UL / 255)) 130 #define ALL_EQ(v1, v2) ((v1) == (v2)) 131 #endif 132 133 134 static struct defconfig_file { 135 const char *filename; 136 /* Indicates it is an user config file (disabled by -no-user-config) */ 137 bool userconfig; 138 } default_config_files[] = { 139 { CONFIG_QEMU_CONFDIR "/qemu.conf", true }, 140 { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true }, 141 { NULL }, /* end of list */ 142 }; 143 144 145 int qemu_read_default_config_files(bool userconfig) 146 { 147 int ret; 148 struct defconfig_file *f; 149 150 for (f = default_config_files; f->filename; f++) { 151 if (!userconfig && f->userconfig) { 152 continue; 153 } 154 ret = qemu_read_config_file(f->filename); 155 if (ret < 0 && ret != -ENOENT) { 156 return ret; 157 } 158 } 159 160 return 0; 161 } 162 163 static int is_dup_page(uint8_t *page) 164 { 165 VECTYPE *p = (VECTYPE *)page; 166 VECTYPE val = SPLAT(page); 167 int i; 168 169 for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) { 170 if (!ALL_EQ(val, p[i])) { 171 return 0; 172 } 173 } 174 175 return 1; 176 } 177 178 /* struct contains XBZRLE cache and a static page 179 used by the compression */ 180 static struct { 181 /* buffer used for XBZRLE encoding */ 182 uint8_t *encoded_buf; 183 /* buffer for storing page content */ 184 uint8_t *current_buf; 185 /* buffer used for XBZRLE decoding */ 186 uint8_t *decoded_buf; 187 /* Cache for XBZRLE */ 188 PageCache *cache; 189 } XBZRLE = { 190 .encoded_buf = NULL, 191 .current_buf = NULL, 192 .decoded_buf = NULL, 193 .cache = NULL, 194 }; 195 196 197 int64_t xbzrle_cache_resize(int64_t new_size) 198 { 199 if (XBZRLE.cache != NULL) { 200 return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) * 201 TARGET_PAGE_SIZE; 202 } 203 return pow2floor(new_size); 204 } 205 206 /* accounting for migration statistics */ 207 typedef struct AccountingInfo { 208 uint64_t dup_pages; 209 uint64_t norm_pages; 210 uint64_t iterations; 211 uint64_t xbzrle_bytes; 212 uint64_t xbzrle_pages; 213 uint64_t xbzrle_cache_miss; 214 uint64_t xbzrle_overflows; 215 } AccountingInfo; 216 217 static AccountingInfo acct_info; 218 219 static void acct_clear(void) 220 { 221 memset(&acct_info, 0, sizeof(acct_info)); 222 } 223 224 uint64_t dup_mig_bytes_transferred(void) 225 { 226 return acct_info.dup_pages * TARGET_PAGE_SIZE; 227 } 228 229 uint64_t dup_mig_pages_transferred(void) 230 { 231 return acct_info.dup_pages; 232 } 233 234 uint64_t norm_mig_bytes_transferred(void) 235 { 236 return acct_info.norm_pages * TARGET_PAGE_SIZE; 237 } 238 239 uint64_t norm_mig_pages_transferred(void) 240 { 241 return acct_info.norm_pages; 242 } 243 244 uint64_t xbzrle_mig_bytes_transferred(void) 245 { 246 return acct_info.xbzrle_bytes; 247 } 248 249 uint64_t xbzrle_mig_pages_transferred(void) 250 { 251 return acct_info.xbzrle_pages; 252 } 253 254 uint64_t xbzrle_mig_pages_cache_miss(void) 255 { 256 return acct_info.xbzrle_cache_miss; 257 } 258 259 uint64_t xbzrle_mig_pages_overflow(void) 260 { 261 return acct_info.xbzrle_overflows; 262 } 263 264 static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, 265 int cont, int flag) 266 { 267 qemu_put_be64(f, offset | cont | flag); 268 if (!cont) { 269 qemu_put_byte(f, strlen(block->idstr)); 270 qemu_put_buffer(f, (uint8_t *)block->idstr, 271 strlen(block->idstr)); 272 } 273 274 } 275 276 #define ENCODING_FLAG_XBZRLE 0x1 277 278 static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data, 279 ram_addr_t current_addr, RAMBlock *block, 280 ram_addr_t offset, int cont, bool last_stage) 281 { 282 int encoded_len = 0, bytes_sent = -1; 283 uint8_t *prev_cached_page; 284 285 if (!cache_is_cached(XBZRLE.cache, current_addr)) { 286 if (!last_stage) { 287 cache_insert(XBZRLE.cache, current_addr, 288 g_memdup(current_data, TARGET_PAGE_SIZE)); 289 } 290 acct_info.xbzrle_cache_miss++; 291 return -1; 292 } 293 294 prev_cached_page = get_cached_data(XBZRLE.cache, current_addr); 295 296 /* save current buffer into memory */ 297 memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE); 298 299 /* XBZRLE encoding (if there is no overflow) */ 300 encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf, 301 TARGET_PAGE_SIZE, XBZRLE.encoded_buf, 302 TARGET_PAGE_SIZE); 303 if (encoded_len == 0) { 304 DPRINTF("Skipping unmodified page\n"); 305 return 0; 306 } else if (encoded_len == -1) { 307 DPRINTF("Overflow\n"); 308 acct_info.xbzrle_overflows++; 309 /* update data in the cache */ 310 memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE); 311 return -1; 312 } 313 314 /* we need to update the data in the cache, in order to get the same data */ 315 if (!last_stage) { 316 memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE); 317 } 318 319 /* Send XBZRLE based compressed page */ 320 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE); 321 qemu_put_byte(f, ENCODING_FLAG_XBZRLE); 322 qemu_put_be16(f, encoded_len); 323 qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len); 324 bytes_sent = encoded_len + 1 + 2; 325 acct_info.xbzrle_pages++; 326 acct_info.xbzrle_bytes += bytes_sent; 327 328 return bytes_sent; 329 } 330 331 static RAMBlock *last_block; 332 static ram_addr_t last_offset; 333 334 static inline void migration_bitmap_set_dirty(MemoryRegion *mr, int length) 335 { 336 ram_addr_t addr; 337 338 for (addr = 0; addr < length; addr += TARGET_PAGE_SIZE) { 339 if (!memory_region_get_dirty(mr, addr, TARGET_PAGE_SIZE, 340 DIRTY_MEMORY_MIGRATION)) { 341 memory_region_set_dirty(mr, addr, TARGET_PAGE_SIZE); 342 } 343 } 344 } 345 346 /* 347 * ram_save_block: Writes a page of memory to the stream f 348 * 349 * Returns: 0: if the page hasn't changed 350 * -1: if there are no more dirty pages 351 * n: the amount of bytes written in other case 352 */ 353 354 static int ram_save_block(QEMUFile *f, bool last_stage) 355 { 356 RAMBlock *block = last_block; 357 ram_addr_t offset = last_offset; 358 int bytes_sent = -1; 359 MemoryRegion *mr; 360 ram_addr_t current_addr; 361 362 if (!block) 363 block = QLIST_FIRST(&ram_list.blocks); 364 365 do { 366 mr = block->mr; 367 if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE, 368 DIRTY_MEMORY_MIGRATION)) { 369 uint8_t *p; 370 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0; 371 372 memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE, 373 DIRTY_MEMORY_MIGRATION); 374 375 p = memory_region_get_ram_ptr(mr) + offset; 376 377 if (is_dup_page(p)) { 378 acct_info.dup_pages++; 379 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS); 380 qemu_put_byte(f, *p); 381 bytes_sent = 1; 382 } else if (migrate_use_xbzrle()) { 383 current_addr = block->offset + offset; 384 bytes_sent = save_xbzrle_page(f, p, current_addr, block, 385 offset, cont, last_stage); 386 if (!last_stage) { 387 p = get_cached_data(XBZRLE.cache, current_addr); 388 } 389 } 390 391 /* either we didn't send yet (we may have had XBZRLE overflow) */ 392 if (bytes_sent == -1) { 393 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); 394 qemu_put_buffer(f, p, TARGET_PAGE_SIZE); 395 bytes_sent = TARGET_PAGE_SIZE; 396 acct_info.norm_pages++; 397 } 398 399 /* if page is unmodified, continue to the next */ 400 if (bytes_sent != 0) { 401 break; 402 } 403 } 404 405 offset += TARGET_PAGE_SIZE; 406 if (offset >= block->length) { 407 offset = 0; 408 block = QLIST_NEXT(block, next); 409 if (!block) 410 block = QLIST_FIRST(&ram_list.blocks); 411 } 412 } while (block != last_block || offset != last_offset); 413 414 last_block = block; 415 last_offset = offset; 416 417 return bytes_sent; 418 } 419 420 static uint64_t bytes_transferred; 421 422 static ram_addr_t ram_save_remaining(void) 423 { 424 return ram_list.dirty_pages; 425 } 426 427 uint64_t ram_bytes_remaining(void) 428 { 429 return ram_save_remaining() * TARGET_PAGE_SIZE; 430 } 431 432 uint64_t ram_bytes_transferred(void) 433 { 434 return bytes_transferred; 435 } 436 437 uint64_t ram_bytes_total(void) 438 { 439 RAMBlock *block; 440 uint64_t total = 0; 441 442 QLIST_FOREACH(block, &ram_list.blocks, next) 443 total += block->length; 444 445 return total; 446 } 447 448 static int block_compar(const void *a, const void *b) 449 { 450 RAMBlock * const *ablock = a; 451 RAMBlock * const *bblock = b; 452 453 return strcmp((*ablock)->idstr, (*bblock)->idstr); 454 } 455 456 static void sort_ram_list(void) 457 { 458 RAMBlock *block, *nblock, **blocks; 459 int n; 460 n = 0; 461 QLIST_FOREACH(block, &ram_list.blocks, next) { 462 ++n; 463 } 464 blocks = g_malloc(n * sizeof *blocks); 465 n = 0; 466 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) { 467 blocks[n++] = block; 468 QLIST_REMOVE(block, next); 469 } 470 qsort(blocks, n, sizeof *blocks, block_compar); 471 while (--n >= 0) { 472 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next); 473 } 474 g_free(blocks); 475 } 476 477 static void migration_end(void) 478 { 479 memory_global_dirty_log_stop(); 480 481 if (migrate_use_xbzrle()) { 482 cache_fini(XBZRLE.cache); 483 g_free(XBZRLE.cache); 484 g_free(XBZRLE.encoded_buf); 485 g_free(XBZRLE.current_buf); 486 g_free(XBZRLE.decoded_buf); 487 XBZRLE.cache = NULL; 488 } 489 } 490 491 static void ram_migration_cancel(void *opaque) 492 { 493 migration_end(); 494 } 495 496 497 static void reset_ram_globals(void) 498 { 499 last_block = NULL; 500 last_offset = 0; 501 sort_ram_list(); 502 } 503 504 #define MAX_WAIT 50 /* ms, half buffered_file limit */ 505 506 static int ram_save_setup(QEMUFile *f, void *opaque) 507 { 508 RAMBlock *block; 509 510 bytes_transferred = 0; 511 reset_ram_globals(); 512 513 if (migrate_use_xbzrle()) { 514 XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() / 515 TARGET_PAGE_SIZE, 516 TARGET_PAGE_SIZE); 517 if (!XBZRLE.cache) { 518 DPRINTF("Error creating cache\n"); 519 return -1; 520 } 521 XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE); 522 XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE); 523 acct_clear(); 524 } 525 526 /* Make sure all dirty bits are set */ 527 QLIST_FOREACH(block, &ram_list.blocks, next) { 528 migration_bitmap_set_dirty(block->mr, block->length); 529 } 530 531 memory_global_dirty_log_start(); 532 memory_global_sync_dirty_bitmap(get_system_memory()); 533 534 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE); 535 536 QLIST_FOREACH(block, &ram_list.blocks, next) { 537 qemu_put_byte(f, strlen(block->idstr)); 538 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr)); 539 qemu_put_be64(f, block->length); 540 } 541 542 qemu_put_be64(f, RAM_SAVE_FLAG_EOS); 543 544 return 0; 545 } 546 547 static int ram_save_iterate(QEMUFile *f, void *opaque) 548 { 549 uint64_t bytes_transferred_last; 550 double bwidth = 0; 551 int ret; 552 int i; 553 uint64_t expected_downtime; 554 MigrationState *s = migrate_get_current(); 555 556 bytes_transferred_last = bytes_transferred; 557 bwidth = qemu_get_clock_ns(rt_clock); 558 559 i = 0; 560 while ((ret = qemu_file_rate_limit(f)) == 0) { 561 int bytes_sent; 562 563 bytes_sent = ram_save_block(f, false); 564 /* no more blocks to sent */ 565 if (bytes_sent < 0) { 566 break; 567 } 568 bytes_transferred += bytes_sent; 569 acct_info.iterations++; 570 /* we want to check in the 1st loop, just in case it was the 1st time 571 and we had to sync the dirty bitmap. 572 qemu_get_clock_ns() is a bit expensive, so we only check each some 573 iterations 574 */ 575 if ((i & 63) == 0) { 576 uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000; 577 if (t1 > MAX_WAIT) { 578 DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n", 579 t1, i); 580 break; 581 } 582 } 583 i++; 584 } 585 586 if (ret < 0) { 587 return ret; 588 } 589 590 bwidth = qemu_get_clock_ns(rt_clock) - bwidth; 591 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth; 592 593 /* if we haven't transferred anything this round, force 594 * expected_downtime to a very high value, but without 595 * crashing */ 596 if (bwidth == 0) { 597 bwidth = 0.000001; 598 } 599 600 qemu_put_be64(f, RAM_SAVE_FLAG_EOS); 601 602 expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth; 603 DPRINTF("ram_save_live: expected(%" PRIu64 ") <= max(" PRIu64 ")?\n", 604 expected_downtime, migrate_max_downtime()); 605 606 if (expected_downtime <= migrate_max_downtime()) { 607 memory_global_sync_dirty_bitmap(get_system_memory()); 608 expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth; 609 s->expected_downtime = expected_downtime / 1000000; /* ns -> ms */ 610 611 return expected_downtime <= migrate_max_downtime(); 612 } 613 return 0; 614 } 615 616 static int ram_save_complete(QEMUFile *f, void *opaque) 617 { 618 memory_global_sync_dirty_bitmap(get_system_memory()); 619 620 /* try transferring iterative blocks of memory */ 621 622 /* flush all remaining blocks regardless of rate limiting */ 623 while (true) { 624 int bytes_sent; 625 626 bytes_sent = ram_save_block(f, true); 627 /* no more blocks to sent */ 628 if (bytes_sent < 0) { 629 break; 630 } 631 bytes_transferred += bytes_sent; 632 } 633 memory_global_dirty_log_stop(); 634 635 qemu_put_be64(f, RAM_SAVE_FLAG_EOS); 636 637 return 0; 638 } 639 640 static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host) 641 { 642 int ret, rc = 0; 643 unsigned int xh_len; 644 int xh_flags; 645 646 if (!XBZRLE.decoded_buf) { 647 XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE); 648 } 649 650 /* extract RLE header */ 651 xh_flags = qemu_get_byte(f); 652 xh_len = qemu_get_be16(f); 653 654 if (xh_flags != ENCODING_FLAG_XBZRLE) { 655 fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n"); 656 return -1; 657 } 658 659 if (xh_len > TARGET_PAGE_SIZE) { 660 fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n"); 661 return -1; 662 } 663 /* load data and decode */ 664 qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len); 665 666 /* decode RLE */ 667 ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host, 668 TARGET_PAGE_SIZE); 669 if (ret == -1) { 670 fprintf(stderr, "Failed to load XBZRLE page - decode error!\n"); 671 rc = -1; 672 } else if (ret > TARGET_PAGE_SIZE) { 673 fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n", 674 ret, TARGET_PAGE_SIZE); 675 abort(); 676 } 677 678 return rc; 679 } 680 681 static inline void *host_from_stream_offset(QEMUFile *f, 682 ram_addr_t offset, 683 int flags) 684 { 685 static RAMBlock *block = NULL; 686 char id[256]; 687 uint8_t len; 688 689 if (flags & RAM_SAVE_FLAG_CONTINUE) { 690 if (!block) { 691 fprintf(stderr, "Ack, bad migration stream!\n"); 692 return NULL; 693 } 694 695 return memory_region_get_ram_ptr(block->mr) + offset; 696 } 697 698 len = qemu_get_byte(f); 699 qemu_get_buffer(f, (uint8_t *)id, len); 700 id[len] = 0; 701 702 QLIST_FOREACH(block, &ram_list.blocks, next) { 703 if (!strncmp(id, block->idstr, sizeof(id))) 704 return memory_region_get_ram_ptr(block->mr) + offset; 705 } 706 707 fprintf(stderr, "Can't find block %s!\n", id); 708 return NULL; 709 } 710 711 static int ram_load(QEMUFile *f, void *opaque, int version_id) 712 { 713 ram_addr_t addr; 714 int flags, ret = 0; 715 int error; 716 static uint64_t seq_iter; 717 718 seq_iter++; 719 720 if (version_id < 4 || version_id > 4) { 721 return -EINVAL; 722 } 723 724 do { 725 addr = qemu_get_be64(f); 726 727 flags = addr & ~TARGET_PAGE_MASK; 728 addr &= TARGET_PAGE_MASK; 729 730 if (flags & RAM_SAVE_FLAG_MEM_SIZE) { 731 if (version_id == 4) { 732 /* Synchronize RAM block list */ 733 char id[256]; 734 ram_addr_t length; 735 ram_addr_t total_ram_bytes = addr; 736 737 while (total_ram_bytes) { 738 RAMBlock *block; 739 uint8_t len; 740 741 len = qemu_get_byte(f); 742 qemu_get_buffer(f, (uint8_t *)id, len); 743 id[len] = 0; 744 length = qemu_get_be64(f); 745 746 QLIST_FOREACH(block, &ram_list.blocks, next) { 747 if (!strncmp(id, block->idstr, sizeof(id))) { 748 if (block->length != length) { 749 ret = -EINVAL; 750 goto done; 751 } 752 break; 753 } 754 } 755 756 if (!block) { 757 fprintf(stderr, "Unknown ramblock \"%s\", cannot " 758 "accept migration\n", id); 759 ret = -EINVAL; 760 goto done; 761 } 762 763 total_ram_bytes -= length; 764 } 765 } 766 } 767 768 if (flags & RAM_SAVE_FLAG_COMPRESS) { 769 void *host; 770 uint8_t ch; 771 772 host = host_from_stream_offset(f, addr, flags); 773 if (!host) { 774 return -EINVAL; 775 } 776 777 ch = qemu_get_byte(f); 778 memset(host, ch, TARGET_PAGE_SIZE); 779 #ifndef _WIN32 780 if (ch == 0 && 781 (!kvm_enabled() || kvm_has_sync_mmu())) { 782 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED); 783 } 784 #endif 785 } else if (flags & RAM_SAVE_FLAG_PAGE) { 786 void *host; 787 788 host = host_from_stream_offset(f, addr, flags); 789 if (!host) { 790 return -EINVAL; 791 } 792 793 qemu_get_buffer(f, host, TARGET_PAGE_SIZE); 794 } else if (flags & RAM_SAVE_FLAG_XBZRLE) { 795 if (!migrate_use_xbzrle()) { 796 return -EINVAL; 797 } 798 void *host = host_from_stream_offset(f, addr, flags); 799 if (!host) { 800 return -EINVAL; 801 } 802 803 if (load_xbzrle(f, addr, host) < 0) { 804 ret = -EINVAL; 805 goto done; 806 } 807 } 808 error = qemu_file_get_error(f); 809 if (error) { 810 ret = error; 811 goto done; 812 } 813 } while (!(flags & RAM_SAVE_FLAG_EOS)); 814 815 done: 816 DPRINTF("Completed load of VM with exit code %d seq iteration " 817 "%" PRIu64 "\n", ret, seq_iter); 818 return ret; 819 } 820 821 SaveVMHandlers savevm_ram_handlers = { 822 .save_live_setup = ram_save_setup, 823 .save_live_iterate = ram_save_iterate, 824 .save_live_complete = ram_save_complete, 825 .load_state = ram_load, 826 .cancel = ram_migration_cancel, 827 }; 828 829 #ifdef HAS_AUDIO 830 struct soundhw { 831 const char *name; 832 const char *descr; 833 int enabled; 834 int isa; 835 union { 836 int (*init_isa) (ISABus *bus); 837 int (*init_pci) (PCIBus *bus); 838 } init; 839 }; 840 841 static struct soundhw soundhw[] = { 842 #ifdef HAS_AUDIO_CHOICE 843 #ifdef CONFIG_PCSPK 844 { 845 "pcspk", 846 "PC speaker", 847 0, 848 1, 849 { .init_isa = pcspk_audio_init } 850 }, 851 #endif 852 853 #ifdef CONFIG_SB16 854 { 855 "sb16", 856 "Creative Sound Blaster 16", 857 0, 858 1, 859 { .init_isa = SB16_init } 860 }, 861 #endif 862 863 #ifdef CONFIG_CS4231A 864 { 865 "cs4231a", 866 "CS4231A", 867 0, 868 1, 869 { .init_isa = cs4231a_init } 870 }, 871 #endif 872 873 #ifdef CONFIG_ADLIB 874 { 875 "adlib", 876 #ifdef HAS_YMF262 877 "Yamaha YMF262 (OPL3)", 878 #else 879 "Yamaha YM3812 (OPL2)", 880 #endif 881 0, 882 1, 883 { .init_isa = Adlib_init } 884 }, 885 #endif 886 887 #ifdef CONFIG_GUS 888 { 889 "gus", 890 "Gravis Ultrasound GF1", 891 0, 892 1, 893 { .init_isa = GUS_init } 894 }, 895 #endif 896 897 #ifdef CONFIG_AC97 898 { 899 "ac97", 900 "Intel 82801AA AC97 Audio", 901 0, 902 0, 903 { .init_pci = ac97_init } 904 }, 905 #endif 906 907 #ifdef CONFIG_ES1370 908 { 909 "es1370", 910 "ENSONIQ AudioPCI ES1370", 911 0, 912 0, 913 { .init_pci = es1370_init } 914 }, 915 #endif 916 917 #ifdef CONFIG_HDA 918 { 919 "hda", 920 "Intel HD Audio", 921 0, 922 0, 923 { .init_pci = intel_hda_and_codec_init } 924 }, 925 #endif 926 927 #endif /* HAS_AUDIO_CHOICE */ 928 929 { NULL, NULL, 0, 0, { NULL } } 930 }; 931 932 void select_soundhw(const char *optarg) 933 { 934 struct soundhw *c; 935 936 if (is_help_option(optarg)) { 937 show_valid_cards: 938 939 #ifdef HAS_AUDIO_CHOICE 940 printf("Valid sound card names (comma separated):\n"); 941 for (c = soundhw; c->name; ++c) { 942 printf ("%-11s %s\n", c->name, c->descr); 943 } 944 printf("\n-soundhw all will enable all of the above\n"); 945 #else 946 printf("Machine has no user-selectable audio hardware " 947 "(it may or may not have always-present audio hardware).\n"); 948 #endif 949 exit(!is_help_option(optarg)); 950 } 951 else { 952 size_t l; 953 const char *p; 954 char *e; 955 int bad_card = 0; 956 957 if (!strcmp(optarg, "all")) { 958 for (c = soundhw; c->name; ++c) { 959 c->enabled = 1; 960 } 961 return; 962 } 963 964 p = optarg; 965 while (*p) { 966 e = strchr(p, ','); 967 l = !e ? strlen(p) : (size_t) (e - p); 968 969 for (c = soundhw; c->name; ++c) { 970 if (!strncmp(c->name, p, l) && !c->name[l]) { 971 c->enabled = 1; 972 break; 973 } 974 } 975 976 if (!c->name) { 977 if (l > 80) { 978 fprintf(stderr, 979 "Unknown sound card name (too big to show)\n"); 980 } 981 else { 982 fprintf(stderr, "Unknown sound card name `%.*s'\n", 983 (int) l, p); 984 } 985 bad_card = 1; 986 } 987 p += l + (e != NULL); 988 } 989 990 if (bad_card) { 991 goto show_valid_cards; 992 } 993 } 994 } 995 996 void audio_init(ISABus *isa_bus, PCIBus *pci_bus) 997 { 998 struct soundhw *c; 999 1000 for (c = soundhw; c->name; ++c) { 1001 if (c->enabled) { 1002 if (c->isa) { 1003 if (isa_bus) { 1004 c->init.init_isa(isa_bus); 1005 } 1006 } else { 1007 if (pci_bus) { 1008 c->init.init_pci(pci_bus); 1009 } 1010 } 1011 } 1012 } 1013 } 1014 #else 1015 void select_soundhw(const char *optarg) 1016 { 1017 } 1018 void audio_init(ISABus *isa_bus, PCIBus *pci_bus) 1019 { 1020 } 1021 #endif 1022 1023 int qemu_uuid_parse(const char *str, uint8_t *uuid) 1024 { 1025 int ret; 1026 1027 if (strlen(str) != 36) { 1028 return -1; 1029 } 1030 1031 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3], 1032 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9], 1033 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], 1034 &uuid[15]); 1035 1036 if (ret != 16) { 1037 return -1; 1038 } 1039 #ifdef TARGET_I386 1040 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid); 1041 #endif 1042 return 0; 1043 } 1044 1045 void do_acpitable_option(const char *optarg) 1046 { 1047 #ifdef TARGET_I386 1048 if (acpi_table_add(optarg) < 0) { 1049 fprintf(stderr, "Wrong acpi table provided\n"); 1050 exit(1); 1051 } 1052 #endif 1053 } 1054 1055 void do_smbios_option(const char *optarg) 1056 { 1057 #ifdef TARGET_I386 1058 if (smbios_entry_add(optarg) < 0) { 1059 fprintf(stderr, "Wrong smbios provided\n"); 1060 exit(1); 1061 } 1062 #endif 1063 } 1064 1065 void cpudef_init(void) 1066 { 1067 #if defined(cpudef_setup) 1068 cpudef_setup(); /* parse cpu definitions in target config file */ 1069 #endif 1070 } 1071 1072 int audio_available(void) 1073 { 1074 #ifdef HAS_AUDIO 1075 return 1; 1076 #else 1077 return 0; 1078 #endif 1079 } 1080 1081 int tcg_available(void) 1082 { 1083 return 1; 1084 } 1085 1086 int kvm_available(void) 1087 { 1088 #ifdef CONFIG_KVM 1089 return 1; 1090 #else 1091 return 0; 1092 #endif 1093 } 1094 1095 int xen_available(void) 1096 { 1097 #ifdef CONFIG_XEN 1098 return 1; 1099 #else 1100 return 0; 1101 #endif 1102 } 1103 1104 1105 TargetInfo *qmp_query_target(Error **errp) 1106 { 1107 TargetInfo *info = g_malloc0(sizeof(*info)); 1108 1109 info->arch = TARGET_TYPE; 1110 1111 return info; 1112 } 1113