| /* |
| * 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 "gdbstub.h" |
| #include "hw/smbios.h" |
| #include "exec-memory.h" |
| #include "hw/pcspk.h" |
| #include "qemu/page_cache.h" |
| #include "qemu-config.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, 0, 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()) && |
| getpagesize() <= TARGET_PAGE_SIZE) { |
| 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; |
| } |