diff options
| -rw-r--r-- | arch_init.c | 118 | ||||
| -rw-r--r-- | vl.c | 2 |
2 files changed, 108 insertions, 12 deletions
diff --git a/arch_init.c b/arch_init.c index 109dcefe32..37aad9d17b 100644 --- a/arch_init.c +++ b/arch_init.c @@ -113,20 +113,33 @@ static int ram_save_block(QEMUFile *f) while (addr < total_ram) { if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) { + RAMBlock *block; + ram_addr_t offset; uint8_t *p; cpu_physical_memory_reset_dirty(current_addr, current_addr + TARGET_PAGE_SIZE, MIGRATION_DIRTY_FLAG); - p = qemu_get_ram_ptr(current_addr); + QLIST_FOREACH(block, &ram_list.blocks, next) { + if (current_addr - block->offset < block->length) + break; + } + offset = current_addr - block->offset; + p = block->host + offset; if (is_dup_page(p, *p)) { - qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_COMPRESS); + qemu_put_be64(f, offset | RAM_SAVE_FLAG_COMPRESS); + qemu_put_byte(f, strlen(block->idstr)); + qemu_put_buffer(f, (uint8_t *)block->idstr, + strlen(block->idstr)); qemu_put_byte(f, *p); bytes_sent = 1; } else { - qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_PAGE); + qemu_put_be64(f, offset | RAM_SAVE_FLAG_PAGE); + qemu_put_byte(f, strlen(block->idstr)); + qemu_put_buffer(f, (uint8_t *)block->idstr, + strlen(block->idstr)); qemu_put_buffer(f, p, TARGET_PAGE_SIZE); bytes_sent = TARGET_PAGE_SIZE; } @@ -196,6 +209,7 @@ int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque) } if (stage == 1) { + RAMBlock *block; uint64_t total_ram = ram_bytes_total(); bytes_transferred = 0; @@ -210,6 +224,12 @@ int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque) cpu_physical_memory_set_dirty_tracking(1); qemu_put_be64(f, total_ram | 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); + } } bytes_transferred_last = bytes_transferred; @@ -257,7 +277,7 @@ int ram_load(QEMUFile *f, void *opaque, int version_id) ram_addr_t addr; int flags; - if (version_id != 3) { + if (version_id < 3 || version_id > 4) { return -EINVAL; } @@ -268,23 +288,99 @@ int ram_load(QEMUFile *f, void *opaque, int version_id) addr &= TARGET_PAGE_MASK; if (flags & RAM_SAVE_FLAG_MEM_SIZE) { - if (addr != ram_bytes_total()) { - return -EINVAL; + if (version_id == 3) { + if (addr != ram_bytes_total()) { + return -EINVAL; + } + } else { + /* 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) + return -EINVAL; + break; + } + } + + if (!block) { + if (!qemu_ram_alloc(NULL, id, length)) + return -ENOMEM; + } + + total_ram_bytes -= length; + } } } if (flags & RAM_SAVE_FLAG_COMPRESS) { - uint8_t ch = qemu_get_byte(f); - memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE); + void *host; + uint8_t ch; + + if (version_id == 3) { + host = qemu_get_ram_ptr(addr); + } else { + RAMBlock *block; + char id[256]; + uint8_t len; + + 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))) + break; + } + if (!block) + return -EINVAL; + + host = block->host + addr; + } + ch = qemu_get_byte(f); + memset(host, ch, TARGET_PAGE_SIZE); #ifndef _WIN32 if (ch == 0 && (!kvm_enabled() || kvm_has_sync_mmu())) { - madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE, - MADV_DONTNEED); + madvise(host, TARGET_PAGE_SIZE, MADV_DONTNEED); } #endif } else if (flags & RAM_SAVE_FLAG_PAGE) { - qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE); + void *host; + + if (version_id == 3) { + host = qemu_get_ram_ptr(addr); + } else { + RAMBlock *block; + char id[256]; + uint8_t len; + + 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))) + break; + } + if (!block) + return -EINVAL; + + host = block->host + addr; + } + qemu_get_buffer(f, host, TARGET_PAGE_SIZE); } if (qemu_file_has_error(f)) { return -EIO; @@ -2794,7 +2794,7 @@ int main(int argc, char **argv, char **envp) if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, &machine->use_scsi, 1) != 0) exit(1); - register_savevm_live(NULL, "ram", 0, 3, NULL, ram_save_live, NULL, + register_savevm_live(NULL, "ram", 0, 4, NULL, ram_save_live, NULL, ram_load, NULL); if (nb_numa_nodes > 0) { |