arch_init.c 29.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
/*
 * QEMU System Emulator
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include <stdint.h>
#include <stdarg.h>
26
#include <stdlib.h>
27
#ifndef _WIN32
28
#include <sys/types.h>
29 30 31
#include <sys/mman.h>
#endif
#include "config.h"
32
#include "monitor/monitor.h"
33
#include "sysemu/sysemu.h"
34 35
#include "qemu/bitops.h"
#include "qemu/bitmap.h"
36
#include "sysemu/arch_init.h"
37 38
#include "audio/audio.h"
#include "hw/pc.h"
39
#include "hw/pci/pci.h"
40
#include "hw/audiodev.h"
41
#include "sysemu/kvm.h"
42
#include "migration/migration.h"
43
#include "exec/gdbstub.h"
44
#include "hw/smbios.h"
45
#include "exec/address-spaces.h"
Jan Kiszka's avatar
Jan Kiszka committed
46
#include "hw/pcspk.h"
47
#include "migration/page_cache.h"
48
#include "qemu/config-file.h"
49
#include "qmp-commands.h"
50
#include "trace.h"
51
#include "exec/cpu-all.h"
52

Orit Wasserman's avatar
Orit Wasserman committed
53 54 55 56 57 58 59 60
#ifdef DEBUG_ARCH_INIT
#define DPRINTF(fmt, ...) \
    do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
    do { } while (0)
#endif

61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
#ifdef TARGET_SPARC
int graphic_width = 1024;
int graphic_height = 768;
int graphic_depth = 8;
#else
int graphic_width = 800;
int graphic_height = 600;
int graphic_depth = 15;
#endif


#if defined(TARGET_ALPHA)
#define QEMU_ARCH QEMU_ARCH_ALPHA
#elif defined(TARGET_ARM)
#define QEMU_ARCH QEMU_ARCH_ARM
#elif defined(TARGET_CRIS)
#define QEMU_ARCH QEMU_ARCH_CRIS
#elif defined(TARGET_I386)
#define QEMU_ARCH QEMU_ARCH_I386
#elif defined(TARGET_M68K)
#define QEMU_ARCH QEMU_ARCH_M68K
Michael Walle's avatar
Michael Walle committed
82 83
#elif defined(TARGET_LM32)
#define QEMU_ARCH QEMU_ARCH_LM32
84 85 86 87
#elif defined(TARGET_MICROBLAZE)
#define QEMU_ARCH QEMU_ARCH_MICROBLAZE
#elif defined(TARGET_MIPS)
#define QEMU_ARCH QEMU_ARCH_MIPS
88 89
#elif defined(TARGET_OPENRISC)
#define QEMU_ARCH QEMU_ARCH_OPENRISC
90 91 92 93 94 95 96 97
#elif defined(TARGET_PPC)
#define QEMU_ARCH QEMU_ARCH_PPC
#elif defined(TARGET_S390X)
#define QEMU_ARCH QEMU_ARCH_S390X
#elif defined(TARGET_SH4)
#define QEMU_ARCH QEMU_ARCH_SH4
#elif defined(TARGET_SPARC)
#define QEMU_ARCH QEMU_ARCH_SPARC
Max Filippov's avatar
Max Filippov committed
98 99
#elif defined(TARGET_XTENSA)
#define QEMU_ARCH QEMU_ARCH_XTENSA
100 101
#elif defined(TARGET_UNICORE32)
#define QEMU_ARCH QEMU_ARCH_UNICORE32
102 103 104 105 106 107 108
#endif

const uint32_t arch_type = QEMU_ARCH;

/***********************************************************/
/* ram save/restore */

109 110 111 112 113 114
#define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
#define RAM_SAVE_FLAG_COMPRESS 0x02
#define RAM_SAVE_FLAG_MEM_SIZE 0x04
#define RAM_SAVE_FLAG_PAGE     0x08
#define RAM_SAVE_FLAG_EOS      0x10
#define RAM_SAVE_FLAG_CONTINUE 0x20
115
#define RAM_SAVE_FLAG_XBZRLE   0x40
116

Paolo Bonzini's avatar
Paolo Bonzini committed
117 118 119 120 121
#ifdef __ALTIVEC__
#include <altivec.h>
#define VECTYPE        vector unsigned char
#define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
122 123 124 125
/* altivec.h may redefine the bool macro as vector type.
 * Reset it to POSIX semantics. */
#undef bool
#define bool _Bool
Paolo Bonzini's avatar
Paolo Bonzini committed
126 127 128 129 130 131 132 133 134 135 136
#elif defined __SSE2__
#include <emmintrin.h>
#define VECTYPE        __m128i
#define SPLAT(p)       _mm_set1_epi8(*(p))
#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
#else
#define VECTYPE        unsigned long
#define SPLAT(p)       (*(p) * (~0UL / 255))
#define ALL_EQ(v1, v2) ((v1) == (v2))
#endif

137

138 139
static struct defconfig_file {
    const char *filename;
140 141
    /* Indicates it is an user config file (disabled by -no-user-config) */
    bool userconfig;
142
} default_config_files[] = {
143 144
    { CONFIG_QEMU_CONFDIR "/qemu.conf",                   true },
    { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
145 146 147 148
    { NULL }, /* end of list */
};


149
int qemu_read_default_config_files(bool userconfig)
150 151
{
    int ret;
152
    struct defconfig_file *f;
153

154
    for (f = default_config_files; f->filename; f++) {
155 156 157
        if (!userconfig && f->userconfig) {
            continue;
        }
158 159 160 161
        ret = qemu_read_config_file(f->filename);
        if (ret < 0 && ret != -ENOENT) {
            return ret;
        }
162
    }
163
    
164 165 166
    return 0;
}

Paolo Bonzini's avatar
Paolo Bonzini committed
167
static int is_dup_page(uint8_t *page)
168
{
Paolo Bonzini's avatar
Paolo Bonzini committed
169 170
    VECTYPE *p = (VECTYPE *)page;
    VECTYPE val = SPLAT(page);
171 172
    int i;

Paolo Bonzini's avatar
Paolo Bonzini committed
173 174
    for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
        if (!ALL_EQ(val, p[i])) {
175 176 177 178 179 180 181
            return 0;
        }
    }

    return 1;
}

182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199
/* struct contains XBZRLE cache and a static page
   used by the compression */
static struct {
    /* buffer used for XBZRLE encoding */
    uint8_t *encoded_buf;
    /* buffer for storing page content */
    uint8_t *current_buf;
    /* buffer used for XBZRLE decoding */
    uint8_t *decoded_buf;
    /* Cache for XBZRLE */
    PageCache *cache;
} XBZRLE = {
    .encoded_buf = NULL,
    .current_buf = NULL,
    .decoded_buf = NULL,
    .cache = NULL,
};

200 201 202 203 204 205 206 207 208 209

int64_t xbzrle_cache_resize(int64_t new_size)
{
    if (XBZRLE.cache != NULL) {
        return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) *
            TARGET_PAGE_SIZE;
    }
    return pow2floor(new_size);
}

210 211 212 213 214
/* accounting for migration statistics */
typedef struct AccountingInfo {
    uint64_t dup_pages;
    uint64_t norm_pages;
    uint64_t iterations;
Orit Wasserman's avatar
Orit Wasserman committed
215 216 217 218
    uint64_t xbzrle_bytes;
    uint64_t xbzrle_pages;
    uint64_t xbzrle_cache_miss;
    uint64_t xbzrle_overflows;
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247
} AccountingInfo;

static AccountingInfo acct_info;

static void acct_clear(void)
{
    memset(&acct_info, 0, sizeof(acct_info));
}

uint64_t dup_mig_bytes_transferred(void)
{
    return acct_info.dup_pages * TARGET_PAGE_SIZE;
}

uint64_t dup_mig_pages_transferred(void)
{
    return acct_info.dup_pages;
}

uint64_t norm_mig_bytes_transferred(void)
{
    return acct_info.norm_pages * TARGET_PAGE_SIZE;
}

uint64_t norm_mig_pages_transferred(void)
{
    return acct_info.norm_pages;
}

Orit Wasserman's avatar
Orit Wasserman committed
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267
uint64_t xbzrle_mig_bytes_transferred(void)
{
    return acct_info.xbzrle_bytes;
}

uint64_t xbzrle_mig_pages_transferred(void)
{
    return acct_info.xbzrle_pages;
}

uint64_t xbzrle_mig_pages_cache_miss(void)
{
    return acct_info.xbzrle_cache_miss;
}

uint64_t xbzrle_mig_pages_overflow(void)
{
    return acct_info.xbzrle_overflows;
}

268 269
static size_t save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
                             int cont, int flag)
Orit Wasserman's avatar
Orit Wasserman committed
270
{
271 272 273 274
    size_t size;

    qemu_put_be64(f, offset | cont | flag);
    size = 8;
Orit Wasserman's avatar
Orit Wasserman committed
275

276 277 278 279 280 281 282
    if (!cont) {
        qemu_put_byte(f, strlen(block->idstr));
        qemu_put_buffer(f, (uint8_t *)block->idstr,
                        strlen(block->idstr));
        size += 1 + strlen(block->idstr);
    }
    return size;
Orit Wasserman's avatar
Orit Wasserman committed
283 284
}

285 286 287 288
#define ENCODING_FLAG_XBZRLE 0x1

static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
                            ram_addr_t current_addr, RAMBlock *block,
289
                            ram_addr_t offset, int cont, bool last_stage)
290 291 292 293 294
{
    int encoded_len = 0, bytes_sent = -1;
    uint8_t *prev_cached_page;

    if (!cache_is_cached(XBZRLE.cache, current_addr)) {
295 296 297 298
        if (!last_stage) {
            cache_insert(XBZRLE.cache, current_addr,
                         g_memdup(current_data, TARGET_PAGE_SIZE));
        }
Orit Wasserman's avatar
Orit Wasserman committed
299
        acct_info.xbzrle_cache_miss++;
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
        return -1;
    }

    prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);

    /* save current buffer into memory */
    memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE);

    /* XBZRLE encoding (if there is no overflow) */
    encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf,
                                       TARGET_PAGE_SIZE, XBZRLE.encoded_buf,
                                       TARGET_PAGE_SIZE);
    if (encoded_len == 0) {
        DPRINTF("Skipping unmodified page\n");
        return 0;
    } else if (encoded_len == -1) {
        DPRINTF("Overflow\n");
Orit Wasserman's avatar
Orit Wasserman committed
317
        acct_info.xbzrle_overflows++;
318 319 320 321 322 323
        /* update data in the cache */
        memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE);
        return -1;
    }

    /* we need to update the data in the cache, in order to get the same data */
324 325 326
    if (!last_stage) {
        memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);
    }
327 328

    /* Send XBZRLE based compressed page */
329
    bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
330 331 332
    qemu_put_byte(f, ENCODING_FLAG_XBZRLE);
    qemu_put_be16(f, encoded_len);
    qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len);
333
    bytes_sent += encoded_len + 1 + 2;
Orit Wasserman's avatar
Orit Wasserman committed
334 335
    acct_info.xbzrle_pages++;
    acct_info.xbzrle_bytes += bytes_sent;
336 337 338 339

    return bytes_sent;
}

340 341 342 343

/* This is the last block that we have visited serching for dirty pages
 */
static RAMBlock *last_seen_block;
Juan Quintela's avatar
Juan Quintela committed
344 345
/* This is the last block from where we have sent data */
static RAMBlock *last_sent_block;
346
static ram_addr_t last_offset;
Juan Quintela's avatar
Juan Quintela committed
347 348
static unsigned long *migration_bitmap;
static uint64_t migration_dirty_pages;
349
static uint32_t last_version;
350

351 352 353
static inline
ram_addr_t migration_bitmap_find_and_reset_dirty(MemoryRegion *mr,
                                                 ram_addr_t start)
354
{
355 356 357
    unsigned long base = mr->ram_addr >> TARGET_PAGE_BITS;
    unsigned long nr = base + (start >> TARGET_PAGE_BITS);
    unsigned long size = base + (int128_get64(mr->size) >> TARGET_PAGE_BITS);
Juan Quintela's avatar
Juan Quintela committed
358

359
    unsigned long next = find_next_bit(migration_bitmap, size, nr);
360

361 362
    if (next < size) {
        clear_bit(next, migration_bitmap);
Juan Quintela's avatar
Juan Quintela committed
363
        migration_dirty_pages--;
364
    }
365
    return (next - base) << TARGET_PAGE_BITS;
366 367
}

Juan Quintela's avatar
Juan Quintela committed
368 369
static inline bool migration_bitmap_set_dirty(MemoryRegion *mr,
                                              ram_addr_t offset)
370
{
Juan Quintela's avatar
Juan Quintela committed
371 372
    bool ret;
    int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS;
373

Juan Quintela's avatar
Juan Quintela committed
374 375 376 377
    ret = test_and_set_bit(nr, migration_bitmap);

    if (!ret) {
        migration_dirty_pages++;
378
    }
Juan Quintela's avatar
Juan Quintela committed
379
    return ret;
380 381
}

382 383
static void migration_bitmap_sync(void)
{
Juan Quintela's avatar
Juan Quintela committed
384 385 386
    RAMBlock *block;
    ram_addr_t addr;
    uint64_t num_dirty_pages_init = migration_dirty_pages;
387 388 389 390 391 392 393 394
    MigrationState *s = migrate_get_current();
    static int64_t start_time;
    static int64_t num_dirty_pages_period;
    int64_t end_time;

    if (!start_time) {
        start_time = qemu_get_clock_ms(rt_clock);
    }
395 396

    trace_migration_bitmap_sync_start();
397
    memory_global_sync_dirty_bitmap(get_system_memory());
Juan Quintela's avatar
Juan Quintela committed
398

399
    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
Juan Quintela's avatar
Juan Quintela committed
400
        for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
401 402 403
            if (memory_region_test_and_clear_dirty(block->mr,
                                                   addr, TARGET_PAGE_SIZE,
                                                   DIRTY_MEMORY_MIGRATION)) {
Juan Quintela's avatar
Juan Quintela committed
404 405 406 407 408
                migration_bitmap_set_dirty(block->mr, addr);
            }
        }
    }
    trace_migration_bitmap_sync_end(migration_dirty_pages
409
                                    - num_dirty_pages_init);
410 411 412 413 414 415 416 417 418 419
    num_dirty_pages_period += migration_dirty_pages - num_dirty_pages_init;
    end_time = qemu_get_clock_ms(rt_clock);

    /* more than 1 second = 1000 millisecons */
    if (end_time > start_time + 1000) {
        s->dirty_pages_rate = num_dirty_pages_period * 1000
            / (end_time - start_time);
        start_time = end_time;
        num_dirty_pages_period = 0;
    }
420 421
}

422 423 424
/*
 * ram_save_block: Writes a page of memory to the stream f
 *
425 426
 * Returns:  The number of bytes written.
 *           0 means no dirty pages
427 428
 */

429
static int ram_save_block(QEMUFile *f, bool last_stage)
430
{
431
    RAMBlock *block = last_seen_block;
432
    ram_addr_t offset = last_offset;
433
    bool complete_round = false;
434
    int bytes_sent = 0;
Avi Kivity's avatar
Avi Kivity committed
435
    MemoryRegion *mr;
436
    ram_addr_t current_addr;
437

438
    if (!block)
439
        block = QTAILQ_FIRST(&ram_list.blocks);
440

441
    while (true) {
Avi Kivity's avatar
Avi Kivity committed
442
        mr = block->mr;
443 444 445 446 447 448 449 450 451 452 453 454 455
        offset = migration_bitmap_find_and_reset_dirty(mr, offset);
        if (complete_round && block == last_seen_block &&
            offset >= last_offset) {
            break;
        }
        if (offset >= block->length) {
            offset = 0;
            block = QTAILQ_NEXT(block, next);
            if (!block) {
                block = QTAILQ_FIRST(&ram_list.blocks);
                complete_round = true;
            }
        } else {
456
            uint8_t *p;
Juan Quintela's avatar
Juan Quintela committed
457
            int cont = (block == last_sent_block) ?
458
                RAM_SAVE_FLAG_CONTINUE : 0;
459

Avi Kivity's avatar
Avi Kivity committed
460
            p = memory_region_get_ram_ptr(mr) + offset;
461

462 463
            /* In doubt sent page as normal */
            bytes_sent = -1;
Paolo Bonzini's avatar
Paolo Bonzini committed
464
            if (is_dup_page(p)) {
465
                acct_info.dup_pages++;
466 467
                bytes_sent = save_block_hdr(f, block, offset, cont,
                                            RAM_SAVE_FLAG_COMPRESS);
468
                qemu_put_byte(f, *p);
469
                bytes_sent += 1;
470 471 472
            } else if (migrate_use_xbzrle()) {
                current_addr = block->offset + offset;
                bytes_sent = save_xbzrle_page(f, p, current_addr, block,
473 474 475 476
                                              offset, cont, last_stage);
                if (!last_stage) {
                    p = get_cached_data(XBZRLE.cache, current_addr);
                }
477 478
            }

479
            /* XBZRLE overflow or normal page */
480
            if (bytes_sent == -1) {
481
                bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
482
                qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
483
                bytes_sent += TARGET_PAGE_SIZE;
484
                acct_info.norm_pages++;
485 486
            }

487
            /* if page is unmodified, continue to the next */
488
            if (bytes_sent > 0) {
Juan Quintela's avatar
Juan Quintela committed
489
                last_sent_block = block;
490 491
                break;
            }
492
        }
493
    }
494
    last_seen_block = block;
495
    last_offset = offset;
496

497
    return bytes_sent;
498 499 500 501 502 503
}

static uint64_t bytes_transferred;

static ram_addr_t ram_save_remaining(void)
{
Juan Quintela's avatar
Juan Quintela committed
504
    return migration_dirty_pages;
505 506 507 508 509 510 511 512 513 514 515 516 517 518
}

uint64_t ram_bytes_remaining(void)
{
    return ram_save_remaining() * TARGET_PAGE_SIZE;
}

uint64_t ram_bytes_transferred(void)
{
    return bytes_transferred;
}

uint64_t ram_bytes_total(void)
{
519 520 521
    RAMBlock *block;
    uint64_t total = 0;

522
    QTAILQ_FOREACH(block, &ram_list.blocks, next)
523 524 525
        total += block->length;

    return total;
526 527
}

Orit Wasserman's avatar
Orit Wasserman committed
528 529
static void migration_end(void)
{
530 531 532 533 534
    if (migration_bitmap) {
        memory_global_dirty_log_stop();
        g_free(migration_bitmap);
        migration_bitmap = NULL;
    }
535

536
    if (XBZRLE.cache) {
537 538 539 540 541 542 543
        cache_fini(XBZRLE.cache);
        g_free(XBZRLE.cache);
        g_free(XBZRLE.encoded_buf);
        g_free(XBZRLE.current_buf);
        g_free(XBZRLE.decoded_buf);
        XBZRLE.cache = NULL;
    }
Orit Wasserman's avatar
Orit Wasserman committed
544 545
}

546 547 548 549 550
static void ram_migration_cancel(void *opaque)
{
    migration_end();
}

551 552
static void reset_ram_globals(void)
{
553
    last_seen_block = NULL;
Juan Quintela's avatar
Juan Quintela committed
554
    last_sent_block = NULL;
555
    last_offset = 0;
556
    last_version = ram_list.version;
557 558
}

559 560
#define MAX_WAIT 50 /* ms, half buffered_file limit */

561
static int ram_save_setup(QEMUFile *f, void *opaque)
562
{
563
    RAMBlock *block;
Juan Quintela's avatar
Juan Quintela committed
564 565 566
    int64_t ram_pages = last_ram_offset() >> TARGET_PAGE_BITS;

    migration_bitmap = bitmap_new(ram_pages);
567
    bitmap_set(migration_bitmap, 0, ram_pages);
Juan Quintela's avatar
Juan Quintela committed
568
    migration_dirty_pages = ram_pages;
569

570
    qemu_mutex_lock_ramlist();
571
    bytes_transferred = 0;
572
    reset_ram_globals();
573

574 575 576 577 578 579 580 581 582 583
    if (migrate_use_xbzrle()) {
        XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
                                  TARGET_PAGE_SIZE,
                                  TARGET_PAGE_SIZE);
        if (!XBZRLE.cache) {
            DPRINTF("Error creating cache\n");
            return -1;
        }
        XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE);
        XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE);
584
        acct_clear();
585 586
    }

587
    memory_global_dirty_log_start();
Juan Quintela's avatar
Juan Quintela committed
588
    migration_bitmap_sync();
589

590
    qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
591

592
    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
593 594 595
        qemu_put_byte(f, strlen(block->idstr));
        qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
        qemu_put_be64(f, block->length);
596 597
    }

598
    qemu_mutex_unlock_ramlist();
599 600 601 602 603
    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);

    return 0;
}

604
static int ram_save_iterate(QEMUFile *f, void *opaque)
605 606 607
{
    int ret;
    int i;
608
    int64_t t0;
609
    int total_sent = 0;
610

611 612
    qemu_mutex_lock_ramlist();

613 614 615 616
    if (ram_list.version != last_version) {
        reset_ram_globals();
    }

617
    t0 = qemu_get_clock_ns(rt_clock);
618
    i = 0;
619
    while ((ret = qemu_file_rate_limit(f)) == 0) {
620
        int bytes_sent;
621

622
        bytes_sent = ram_save_block(f, false);
623
        /* no more blocks to sent */
624
        if (bytes_sent == 0) {
625 626
            break;
        }
627
        total_sent += bytes_sent;
628
        acct_info.iterations++;
629 630 631 632 633 634
        /* we want to check in the 1st loop, just in case it was the 1st time
           and we had to sync the dirty bitmap.
           qemu_get_clock_ns() is a bit expensive, so we only check each some
           iterations
        */
        if ((i & 63) == 0) {
635
            uint64_t t1 = (qemu_get_clock_ns(rt_clock) - t0) / 1000000;
636
            if (t1 > MAX_WAIT) {
637
                DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n",
638 639 640 641 642
                        t1, i);
                break;
            }
        }
        i++;
643 644
    }

645 646
    qemu_mutex_unlock_ramlist();

647
    if (ret < 0) {
648
        bytes_transferred += total_sent;
649 650 651
        return ret;
    }

652
    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
653 654
    total_sent += 8;
    bytes_transferred += total_sent;
655

656
    return total_sent;
657 658 659 660
}

static int ram_save_complete(QEMUFile *f, void *opaque)
{
661
    migration_bitmap_sync();
662

663 664
    qemu_mutex_lock_ramlist();

665
    /* try transferring iterative blocks of memory */
Orit Wasserman's avatar
Orit Wasserman committed
666

667
    /* flush all remaining blocks regardless of rate limiting */
668
    while (true) {
669 670
        int bytes_sent;

671
        bytes_sent = ram_save_block(f, true);
672
        /* no more blocks to sent */
673
        if (bytes_sent == 0) {
674
            break;
675
        }
676
        bytes_transferred += bytes_sent;
677
    }
678
    migration_end();
679

680
    qemu_mutex_unlock_ramlist();
681 682
    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);

683
    return 0;
684 685
}

686 687 688 689 690 691 692 693 694 695 696 697 698
static uint64_t ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size)
{
    uint64_t remaining_size;

    remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE;

    if (remaining_size < max_size) {
        migration_bitmap_sync();
        remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE;
    }
    return remaining_size;
}

699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739
static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host)
{
    int ret, rc = 0;
    unsigned int xh_len;
    int xh_flags;

    if (!XBZRLE.decoded_buf) {
        XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE);
    }

    /* extract RLE header */
    xh_flags = qemu_get_byte(f);
    xh_len = qemu_get_be16(f);

    if (xh_flags != ENCODING_FLAG_XBZRLE) {
        fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
        return -1;
    }

    if (xh_len > TARGET_PAGE_SIZE) {
        fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
        return -1;
    }
    /* load data and decode */
    qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len);

    /* decode RLE */
    ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host,
                               TARGET_PAGE_SIZE);
    if (ret == -1) {
        fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
        rc = -1;
    } else  if (ret > TARGET_PAGE_SIZE) {
        fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
                ret, TARGET_PAGE_SIZE);
        abort();
    }

    return rc;
}

740 741 742 743 744 745 746 747 748 749 750 751 752 753
static inline void *host_from_stream_offset(QEMUFile *f,
                                            ram_addr_t offset,
                                            int flags)
{
    static RAMBlock *block = NULL;
    char id[256];
    uint8_t len;

    if (flags & RAM_SAVE_FLAG_CONTINUE) {
        if (!block) {
            fprintf(stderr, "Ack, bad migration stream!\n");
            return NULL;
        }

754
        return memory_region_get_ram_ptr(block->mr) + offset;
755 756 757 758 759 760
    }

    len = qemu_get_byte(f);
    qemu_get_buffer(f, (uint8_t *)id, len);
    id[len] = 0;

761
    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
762
        if (!strncmp(id, block->idstr, sizeof(id)))
763
            return memory_region_get_ram_ptr(block->mr) + offset;
764 765 766 767 768 769
    }

    fprintf(stderr, "Can't find block %s!\n", id);
    return NULL;
}

770
static int ram_load(QEMUFile *f, void *opaque, int version_id)
771 772
{
    ram_addr_t addr;
Orit Wasserman's avatar
Orit Wasserman committed
773
    int flags, ret = 0;
774
    int error;
Orit Wasserman's avatar
Orit Wasserman committed
775 776 777
    static uint64_t seq_iter;

    seq_iter++;
778

779
    if (version_id < 4 || version_id > 4) {
780 781 782 783 784 785 786 787 788 789
        return -EINVAL;
    }

    do {
        addr = qemu_get_be64(f);

        flags = addr & ~TARGET_PAGE_MASK;
        addr &= TARGET_PAGE_MASK;

        if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
790
            if (version_id == 4) {
791 792 793 794 795 796 797 798 799 800 801 802 803 804
                /* Synchronize RAM block list */
                char id[256];
                ram_addr_t length;
                ram_addr_t total_ram_bytes = addr;

                while (total_ram_bytes) {
                    RAMBlock *block;
                    uint8_t len;

                    len = qemu_get_byte(f);
                    qemu_get_buffer(f, (uint8_t *)id, len);
                    id[len] = 0;
                    length = qemu_get_be64(f);

805
                    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
806
                        if (!strncmp(id, block->idstr, sizeof(id))) {
Orit Wasserman's avatar
Orit Wasserman committed
807 808 809 810
                            if (block->length != length) {
                                ret =  -EINVAL;
                                goto done;
                            }
811 812 813 814 815
                            break;
                        }
                    }

                    if (!block) {
816 817
                        fprintf(stderr, "Unknown ramblock \"%s\", cannot "
                                "accept migration\n", id);
Orit Wasserman's avatar
Orit Wasserman committed
818 819
                        ret = -EINVAL;
                        goto done;
820 821 822 823
                    }

                    total_ram_bytes -= length;
                }
824 825 826 827
            }
        }

        if (flags & RAM_SAVE_FLAG_COMPRESS) {
828 829 830
            void *host;
            uint8_t ch;

831
            host = host_from_stream_offset(f, addr, flags);
832 833 834
            if (!host) {
                return -EINVAL;
            }
835 836 837

            ch = qemu_get_byte(f);
            memset(host, ch, TARGET_PAGE_SIZE);
838 839
#ifndef _WIN32
            if (ch == 0 &&
840 841
                (!kvm_enabled() || kvm_has_sync_mmu()) &&
                getpagesize() <= TARGET_PAGE_SIZE) {
Andreas Färber's avatar
Andreas Färber committed
842
                qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
843 844 845
            }
#endif
        } else if (flags & RAM_SAVE_FLAG_PAGE) {
846 847
            void *host;

848
            host = host_from_stream_offset(f, addr, flags);
849 850 851
            if (!host) {
                return -EINVAL;
            }
852 853

            qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
854 855 856 857 858 859 860 861 862 863 864 865 866
        } else if (flags & RAM_SAVE_FLAG_XBZRLE) {
            if (!migrate_use_xbzrle()) {
                return -EINVAL;
            }
            void *host = host_from_stream_offset(f, addr, flags);
            if (!host) {
                return -EINVAL;
            }

            if (load_xbzrle(f, addr, host) < 0) {
                ret = -EINVAL;
                goto done;
            }
867
        }
868 869
        error = qemu_file_get_error(f);
        if (error) {
Orit Wasserman's avatar
Orit Wasserman committed
870 871
            ret = error;
            goto done;
872 873 874
        }
    } while (!(flags & RAM_SAVE_FLAG_EOS));

Orit Wasserman's avatar
Orit Wasserman committed
875
done:
876 877
    DPRINTF("Completed load of VM with exit code %d seq iteration "
            "%" PRIu64 "\n", ret, seq_iter);
Orit Wasserman's avatar
Orit Wasserman committed
878
    return ret;
879 880
}

881
SaveVMHandlers savevm_ram_handlers = {
882
    .save_live_setup = ram_save_setup,
883 884
    .save_live_iterate = ram_save_iterate,
    .save_live_complete = ram_save_complete,
885
    .save_live_pending = ram_save_pending,
886
    .load_state = ram_load,
887
    .cancel = ram_migration_cancel,
888 889
};

890
#ifdef HAS_AUDIO
891 892 893 894 895 896
struct soundhw {
    const char *name;
    const char *descr;
    int enabled;
    int isa;
    union {
897
        int (*init_isa) (ISABus *bus);
898 899 900 901 902
        int (*init_pci) (PCIBus *bus);
    } init;
};

static struct soundhw soundhw[] = {
903
#ifdef HAS_AUDIO_CHOICE
904
#ifdef CONFIG_PCSPK
905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
    {
        "pcspk",
        "PC speaker",
        0,
        1,
        { .init_isa = pcspk_audio_init }
    },
#endif

#ifdef CONFIG_SB16
    {
        "sb16",
        "Creative Sound Blaster 16",
        0,
        1,
        { .init_isa = SB16_init }
    },
#endif

#ifdef CONFIG_CS4231A
    {
        "cs4231a",
        "CS4231A",
        0,
        1,
        { .init_isa = cs4231a_init }
    },
#endif

#ifdef CONFIG_ADLIB
    {
        "adlib",
#ifdef HAS_YMF262
        "Yamaha YMF262 (OPL3)",
#else
        "Yamaha YM3812 (OPL2)",
#endif
        0,
        1,
        { .init_isa = Adlib_init }
    },
#endif

#ifdef CONFIG_GUS
    {
        "gus",
        "Gravis Ultrasound GF1",
        0,
        1,
        { .init_isa = GUS_init }
    },
#endif

#ifdef CONFIG_AC97
    {
        "ac97",
        "Intel 82801AA AC97 Audio",
        0,
        0,
        { .init_pci = ac97_init }
    },
#endif

#ifdef CONFIG_ES1370
    {
        "es1370",
        "ENSONIQ AudioPCI ES1370",
        0,
        0,
        { .init_pci = es1370_init }
    },
#endif

978 979 980 981 982 983 984 985 986 987
#ifdef CONFIG_HDA
    {
        "hda",
        "Intel HD Audio",
        0,
        0,
        { .init_pci = intel_hda_and_codec_init }
    },
#endif

988 989 990 991 992 993 994 995 996
#endif /* HAS_AUDIO_CHOICE */

    { NULL, NULL, 0, 0, { NULL } }
};

void select_soundhw(const char *optarg)
{
    struct soundhw *c;

997
    if (is_help_option(optarg)) {
998 999
    show_valid_cards:

1000
#ifdef HAS_AUDIO_CHOICE
1001 1002 1003 1004 1005
        printf("Valid sound card names (comma separated):\n");
        for (c = soundhw; c->name; ++c) {
            printf ("%-11s %s\n", c->name, c->descr);
        }
        printf("\n-soundhw all will enable all of the above\n");
1006 1007 1008 1009
#else
        printf("Machine has no user-selectable audio hardware "
               "(it may or may not have always-present audio hardware).\n");
#endif
1010
        exit(!is_help_option(optarg));
1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
    }
    else {
        size_t l;
        const char *p;
        char *e;
        int bad_card = 0;

        if (!strcmp(optarg, "all")) {
            for (c = soundhw; c->name; ++c) {
                c->enabled = 1;
            }
            return;
        }

        p = optarg;
        while (*p) {
            e = strchr(p, ',');
            l = !e ? strlen(p) : (size_t) (e - p);

            for (c = soundhw; c->name; ++c) {
                if (!strncmp(c->name, p, l) && !c->name[l]) {
                    c->enabled = 1;
                    break;
                }
            }

            if (!c->name) {
                if (l > 80) {
                    fprintf(stderr,
                            "Unknown sound card name (too big to show)\n");
                }
                else {
                    fprintf(stderr, "Unknown sound card name `%.*s'\n",
                            (int) l, p);
                }
                bad_card = 1;
            }
            p += l + (e != NULL);
        }

        if (bad_card) {
            goto show_valid_cards;
        }
    }
}
1056

1057
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
1058 1059 1060 1061 1062 1063
{
    struct soundhw *c;

    for (c = soundhw; c->name; ++c) {
        if (c->enabled) {
            if (c->isa) {
1064 1065
                if (isa_bus) {
                    c->init.init_isa(isa_bus);
1066 1067 1068 1069 1070 1071 1072 1073 1074
                }
            } else {
                if (pci_bus) {
                    c->init.init_pci(pci_bus);
                }
            }
        }
    }
}
1075 1076 1077 1078
#else
void select_soundhw(const char *optarg)
{
}
1079
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
1080 1081
{
}
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141
#endif

int qemu_uuid_parse(const char *str, uint8_t *uuid)
{
    int ret;

    if (strlen(str) != 36) {
        return -1;
    }

    ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
                 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
                 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
                 &uuid[15]);

    if (ret != 16) {
        return -1;
    }
#ifdef TARGET_I386
    smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
#endif
    return 0;
}

void do_acpitable_option(const char *optarg)
{
#ifdef TARGET_I386
    if (acpi_table_add(optarg) < 0) {
        fprintf(stderr, "Wrong acpi table provided\n");
        exit(1);
    }
#endif
}

void do_smbios_option(const char *optarg)
{
#ifdef TARGET_I386
    if (smbios_entry_add(optarg) < 0) {
        fprintf(stderr, "Wrong smbios provided\n");
        exit(1);
    }
#endif
}

void cpudef_init(void)
{
#if defined(cpudef_setup)
    cpudef_setup(); /* parse cpu definitions in target config file */
#endif
}

int audio_available(void)
{
#ifdef HAS_AUDIO
    return 1;
#else
    return 0;
#endif
}

1142 1143 1144 1145 1146
int tcg_available(void)
{
    return 1;
}

1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
int kvm_available(void)
{
#ifdef CONFIG_KVM
    return 1;
#else
    return 0;
#endif
}

int xen_available(void)
{
#ifdef CONFIG_XEN
    return 1;
#else
    return 0;
#endif
}
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173


TargetInfo *qmp_query_target(Error **errp)
{
    TargetInfo *info = g_malloc0(sizeof(*info));

    info->arch = TARGET_TYPE;

    return info;
}