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- /*
- * 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>
- #include <stdlib.h>
- #ifndef _WIN32
- #include <sys/types.h>
- #include <sys/mman.h>
- #endif
- #include "config.h"
- #include "monitor.h"
- #include "sysemu.h"
- #include "bitops.h"
- #include "bitmap.h"
- #include "arch_init.h"
- #include "audio/audio.h"
- #include "hw/pc.h"
- #include "hw/pci/pci.h"
- #include "hw/audiodev.h"
- #include "kvm.h"
- #include "migration.h"
- #include "net.h"
- #include "gdbstub.h"
- #include "hw/smbios.h"
- #include "exec-memory.h"
- #include "hw/pcspk.h"
- #include "qemu/page_cache.h"
- #include "qmp-commands.h"
- #include "trace.h"
- #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
- #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
- #elif defined(TARGET_LM32)
- #define QEMU_ARCH QEMU_ARCH_LM32
- #elif defined(TARGET_MICROBLAZE)
- #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
- #elif defined(TARGET_MIPS)
- #define QEMU_ARCH QEMU_ARCH_MIPS
- #elif defined(TARGET_OPENRISC)
- #define QEMU_ARCH QEMU_ARCH_OPENRISC
- #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
- #elif defined(TARGET_XTENSA)
- #define QEMU_ARCH QEMU_ARCH_XTENSA
- #elif defined(TARGET_UNICORE32)
- #define QEMU_ARCH QEMU_ARCH_UNICORE32
- #endif
- const uint32_t arch_type = QEMU_ARCH;
- /***********************************************************/
- /* ram save/restore */
- #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
- #define RAM_SAVE_FLAG_XBZRLE 0x40
- #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)
- /* altivec.h may redefine the bool macro as vector type.
- * Reset it to POSIX semantics. */
- #undef bool
- #define bool _Bool
- #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
- static struct defconfig_file {
- const char *filename;
- /* Indicates it is an user config file (disabled by -no-user-config) */
- bool userconfig;
- } default_config_files[] = {
- { CONFIG_QEMU_CONFDIR "/qemu.conf", true },
- { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
- { NULL }, /* end of list */
- };
- int qemu_read_default_config_files(bool userconfig)
- {
- int ret;
- struct defconfig_file *f;
- for (f = default_config_files; f->filename; f++) {
- if (!userconfig && f->userconfig) {
- continue;
- }
- ret = qemu_read_config_file(f->filename);
- if (ret < 0 && ret != -ENOENT) {
- return ret;
- }
- }
-
- return 0;
- }
- static int is_dup_page(uint8_t *page)
- {
- VECTYPE *p = (VECTYPE *)page;
- VECTYPE val = SPLAT(page);
- int i;
- for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
- if (!ALL_EQ(val, p[i])) {
- return 0;
- }
- }
- return 1;
- }
- /* 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,
- };
- 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);
- }
- /* accounting for migration statistics */
- typedef struct AccountingInfo {
- uint64_t dup_pages;
- uint64_t norm_pages;
- uint64_t iterations;
- uint64_t xbzrle_bytes;
- uint64_t xbzrle_pages;
- uint64_t xbzrle_cache_miss;
- uint64_t xbzrle_overflows;
- } 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;
- }
- 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;
- }
- static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
- int cont, int flag)
- {
- qemu_put_be64(f, offset | cont | flag);
- if (!cont) {
- qemu_put_byte(f, strlen(block->idstr));
- qemu_put_buffer(f, (uint8_t *)block->idstr,
- strlen(block->idstr));
- }
- }
- #define ENCODING_FLAG_XBZRLE 0x1
- static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
- ram_addr_t current_addr, RAMBlock *block,
- ram_addr_t offset, int cont, bool last_stage)
- {
- int encoded_len = 0, bytes_sent = -1;
- uint8_t *prev_cached_page;
- if (!cache_is_cached(XBZRLE.cache, current_addr)) {
- if (!last_stage) {
- cache_insert(XBZRLE.cache, current_addr,
- g_memdup(current_data, TARGET_PAGE_SIZE));
- }
- acct_info.xbzrle_cache_miss++;
- 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");
- acct_info.xbzrle_overflows++;
- /* 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 */
- if (!last_stage) {
- memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);
- }
- /* Send XBZRLE based compressed page */
- save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
- qemu_put_byte(f, ENCODING_FLAG_XBZRLE);
- qemu_put_be16(f, encoded_len);
- qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len);
- bytes_sent = encoded_len + 1 + 2;
- acct_info.xbzrle_pages++;
- acct_info.xbzrle_bytes += bytes_sent;
- return bytes_sent;
- }
- static RAMBlock *last_block;
- static ram_addr_t last_offset;
- static unsigned long *migration_bitmap;
- static uint64_t migration_dirty_pages;
- static inline bool migration_bitmap_test_and_reset_dirty(MemoryRegion *mr,
- ram_addr_t offset)
- {
- bool ret;
- int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS;
- ret = test_and_clear_bit(nr, migration_bitmap);
- if (ret) {
- migration_dirty_pages--;
- }
- return ret;
- }
- static inline bool migration_bitmap_set_dirty(MemoryRegion *mr,
- ram_addr_t offset)
- {
- bool ret;
- int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS;
- ret = test_and_set_bit(nr, migration_bitmap);
- if (!ret) {
- migration_dirty_pages++;
- }
- return ret;
- }
- static void migration_bitmap_sync(void)
- {
- RAMBlock *block;
- ram_addr_t addr;
- uint64_t num_dirty_pages_init = migration_dirty_pages;
- 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);
- }
- trace_migration_bitmap_sync_start();
- memory_global_sync_dirty_bitmap(get_system_memory());
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
- if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
- DIRTY_MEMORY_MIGRATION)) {
- migration_bitmap_set_dirty(block->mr, addr);
- }
- }
- memory_region_reset_dirty(block->mr, 0, block->length,
- DIRTY_MEMORY_MIGRATION);
- }
- trace_migration_bitmap_sync_end(migration_dirty_pages
- - num_dirty_pages_init);
- 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;
- }
- }
- /*
- * ram_save_block: Writes a page of memory to the stream f
- *
- * Returns: 0: if the page hasn't changed
- * -1: if there are no more dirty pages
- * n: the amount of bytes written in other case
- */
- static int ram_save_block(QEMUFile *f, bool last_stage)
- {
- RAMBlock *block = last_block;
- ram_addr_t offset = last_offset;
- int bytes_sent = -1;
- MemoryRegion *mr;
- ram_addr_t current_addr;
- if (!block)
- block = QLIST_FIRST(&ram_list.blocks);
- do {
- mr = block->mr;
- if (migration_bitmap_test_and_reset_dirty(mr, offset)) {
- uint8_t *p;
- int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
- p = memory_region_get_ram_ptr(mr) + offset;
- if (is_dup_page(p)) {
- acct_info.dup_pages++;
- save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS);
- qemu_put_byte(f, *p);
- bytes_sent = 1;
- } else if (migrate_use_xbzrle()) {
- current_addr = block->offset + offset;
- bytes_sent = save_xbzrle_page(f, p, current_addr, block,
- offset, cont, last_stage);
- if (!last_stage) {
- p = get_cached_data(XBZRLE.cache, current_addr);
- }
- }
- /* either we didn't send yet (we may have had XBZRLE overflow) */
- if (bytes_sent == -1) {
- save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
- qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
- bytes_sent = TARGET_PAGE_SIZE;
- acct_info.norm_pages++;
- }
- /* if page is unmodified, continue to the next */
- if (bytes_sent != 0) {
- break;
- }
- }
- offset += TARGET_PAGE_SIZE;
- if (offset >= block->length) {
- offset = 0;
- block = QLIST_NEXT(block, next);
- if (!block)
- block = QLIST_FIRST(&ram_list.blocks);
- }
- } while (block != last_block || offset != last_offset);
- last_block = block;
- last_offset = offset;
- return bytes_sent;
- }
- static uint64_t bytes_transferred;
- static ram_addr_t ram_save_remaining(void)
- {
- return migration_dirty_pages;
- }
- 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)
- {
- RAMBlock *block;
- uint64_t total = 0;
- QLIST_FOREACH(block, &ram_list.blocks, next)
- total += block->length;
- return total;
- }
- static int block_compar(const void *a, const void *b)
- {
- RAMBlock * const *ablock = a;
- RAMBlock * const *bblock = b;
- return strcmp((*ablock)->idstr, (*bblock)->idstr);
- }
- static void sort_ram_list(void)
- {
- RAMBlock *block, *nblock, **blocks;
- int n;
- n = 0;
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- ++n;
- }
- blocks = g_malloc(n * sizeof *blocks);
- n = 0;
- QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
- blocks[n++] = block;
- QLIST_REMOVE(block, next);
- }
- qsort(blocks, n, sizeof *blocks, block_compar);
- while (--n >= 0) {
- QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
- }
- g_free(blocks);
- }
- static void migration_end(void)
- {
- memory_global_dirty_log_stop();
- if (migrate_use_xbzrle()) {
- 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;
- }
- }
- static void ram_migration_cancel(void *opaque)
- {
- migration_end();
- }
- static void reset_ram_globals(void)
- {
- last_block = NULL;
- last_offset = 0;
- sort_ram_list();
- }
- #define MAX_WAIT 50 /* ms, half buffered_file limit */
- static int ram_save_setup(QEMUFile *f, void *opaque)
- {
- RAMBlock *block;
- int64_t ram_pages = last_ram_offset() >> TARGET_PAGE_BITS;
- migration_bitmap = bitmap_new(ram_pages);
- bitmap_set(migration_bitmap, 1, ram_pages);
- migration_dirty_pages = ram_pages;
- bytes_transferred = 0;
- reset_ram_globals();
- 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);
- acct_clear();
- }
- memory_global_dirty_log_start();
- migration_bitmap_sync();
- qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- qemu_put_byte(f, strlen(block->idstr));
- qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
- qemu_put_be64(f, block->length);
- }
- qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
- return 0;
- }
- static int ram_save_iterate(QEMUFile *f, void *opaque)
- {
- uint64_t bytes_transferred_last;
- double bwidth = 0;
- int ret;
- int i;
- uint64_t expected_downtime;
- MigrationState *s = migrate_get_current();
- bytes_transferred_last = bytes_transferred;
- bwidth = qemu_get_clock_ns(rt_clock);
- i = 0;
- while ((ret = qemu_file_rate_limit(f)) == 0) {
- int bytes_sent;
- bytes_sent = ram_save_block(f, false);
- /* no more blocks to sent */
- if (bytes_sent < 0) {
- break;
- }
- bytes_transferred += bytes_sent;
- acct_info.iterations++;
- /* 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) {
- uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000;
- if (t1 > MAX_WAIT) {
- DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n",
- t1, i);
- break;
- }
- }
- i++;
- }
- if (ret < 0) {
- return ret;
- }
- bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
- bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
- /* if we haven't transferred anything this round, force
- * expected_downtime to a very high value, but without
- * crashing */
- if (bwidth == 0) {
- bwidth = 0.000001;
- }
- qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
- expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
- DPRINTF("ram_save_live: expected(%" PRIu64 ") <= max(" PRIu64 ")?\n",
- expected_downtime, migrate_max_downtime());
- if (expected_downtime <= migrate_max_downtime()) {
- migration_bitmap_sync();
- expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
- s->expected_downtime = expected_downtime / 1000000; /* ns -> ms */
- return expected_downtime <= migrate_max_downtime();
- }
- return 0;
- }
- static int ram_save_complete(QEMUFile *f, void *opaque)
- {
- migration_bitmap_sync();
- /* try transferring iterative blocks of memory */
- /* flush all remaining blocks regardless of rate limiting */
- while (true) {
- int bytes_sent;
- bytes_sent = ram_save_block(f, true);
- /* no more blocks to sent */
- if (bytes_sent < 0) {
- break;
- }
- bytes_transferred += bytes_sent;
- }
- memory_global_dirty_log_stop();
- qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
- g_free(migration_bitmap);
- migration_bitmap = NULL;
- return 0;
- }
- 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;
- }
- 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;
- }
- return memory_region_get_ram_ptr(block->mr) + offset;
- }
- len = qemu_get_byte(f);
- qemu_get_buffer(f, (uint8_t *)id, len);
- id[len] = 0;
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- if (!strncmp(id, block->idstr, sizeof(id)))
- return memory_region_get_ram_ptr(block->mr) + offset;
- }
- fprintf(stderr, "Can't find block %s!\n", id);
- return NULL;
- }
- static int ram_load(QEMUFile *f, void *opaque, int version_id)
- {
- ram_addr_t addr;
- int flags, ret = 0;
- int error;
- static uint64_t seq_iter;
- seq_iter++;
- if (version_id < 4 || version_id > 4) {
- return -EINVAL;
- }
- do {
- addr = qemu_get_be64(f);
- flags = addr & ~TARGET_PAGE_MASK;
- addr &= TARGET_PAGE_MASK;
- if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
- if (version_id == 4) {
- /* 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);
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- if (!strncmp(id, block->idstr, sizeof(id))) {
- if (block->length != length) {
- ret = -EINVAL;
- goto done;
- }
- break;
- }
- }
- if (!block) {
- fprintf(stderr, "Unknown ramblock \"%s\", cannot "
- "accept migration\n", id);
- ret = -EINVAL;
- goto done;
- }
- total_ram_bytes -= length;
- }
- }
- }
- if (flags & RAM_SAVE_FLAG_COMPRESS) {
- void *host;
- uint8_t ch;
- host = host_from_stream_offset(f, addr, flags);
- if (!host) {
- return -EINVAL;
- }
- ch = qemu_get_byte(f);
- memset(host, ch, TARGET_PAGE_SIZE);
- #ifndef _WIN32
- if (ch == 0 &&
- (!kvm_enabled() || kvm_has_sync_mmu())) {
- qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
- }
- #endif
- } else if (flags & RAM_SAVE_FLAG_PAGE) {
- void *host;
- host = host_from_stream_offset(f, addr, flags);
- if (!host) {
- return -EINVAL;
- }
- qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
- } 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;
- }
- }
- error = qemu_file_get_error(f);
- if (error) {
- ret = error;
- goto done;
- }
- } while (!(flags & RAM_SAVE_FLAG_EOS));
- done:
- DPRINTF("Completed load of VM with exit code %d seq iteration "
- "%" PRIu64 "\n", ret, seq_iter);
- return ret;
- }
- SaveVMHandlers savevm_ram_handlers = {
- .save_live_setup = ram_save_setup,
- .save_live_iterate = ram_save_iterate,
- .save_live_complete = ram_save_complete,
- .load_state = ram_load,
- .cancel = ram_migration_cancel,
- };
- #ifdef HAS_AUDIO
- struct soundhw {
- const char *name;
- const char *descr;
- int enabled;
- int isa;
- union {
- int (*init_isa) (ISABus *bus);
- int (*init_pci) (PCIBus *bus);
- } init;
- };
- static struct soundhw soundhw[] = {
- #ifdef HAS_AUDIO_CHOICE
- #ifdef CONFIG_PCSPK
- {
- "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
- #ifdef CONFIG_HDA
- {
- "hda",
- "Intel HD Audio",
- 0,
- 0,
- { .init_pci = intel_hda_and_codec_init }
- },
- #endif
- #endif /* HAS_AUDIO_CHOICE */
- { NULL, NULL, 0, 0, { NULL } }
- };
- void select_soundhw(const char *optarg)
- {
- struct soundhw *c;
- if (is_help_option(optarg)) {
- show_valid_cards:
- #ifdef HAS_AUDIO_CHOICE
- 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");
- #else
- printf("Machine has no user-selectable audio hardware "
- "(it may or may not have always-present audio hardware).\n");
- #endif
- exit(!is_help_option(optarg));
- }
- 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;
- }
- }
- }
- void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
- {
- struct soundhw *c;
- for (c = soundhw; c->name; ++c) {
- if (c->enabled) {
- if (c->isa) {
- if (isa_bus) {
- c->init.init_isa(isa_bus);
- }
- } else {
- if (pci_bus) {
- c->init.init_pci(pci_bus);
- }
- }
- }
- }
- }
- #else
- void select_soundhw(const char *optarg)
- {
- }
- void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
- {
- }
- #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
- }
- int tcg_available(void)
- {
- return 1;
- }
- 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
- }
- TargetInfo *qmp_query_target(Error **errp)
- {
- TargetInfo *info = g_malloc0(sizeof(*info));
- info->arch = TARGET_TYPE;
- return info;
- }
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