17b1e1a22SJuan Quintela /* 27b1e1a22SJuan Quintela * QEMU System Emulator 37b1e1a22SJuan Quintela * 47b1e1a22SJuan Quintela * Copyright (c) 2003-2008 Fabrice Bellard 57b1e1a22SJuan Quintela * Copyright (c) 2011-2015 Red Hat Inc 67b1e1a22SJuan Quintela * 77b1e1a22SJuan Quintela * Authors: 87b1e1a22SJuan Quintela * Juan Quintela <quintela@redhat.com> 97b1e1a22SJuan Quintela * 107b1e1a22SJuan Quintela * Permission is hereby granted, free of charge, to any person obtaining a copy 117b1e1a22SJuan Quintela * of this software and associated documentation files (the "Software"), to deal 127b1e1a22SJuan Quintela * in the Software without restriction, including without limitation the rights 137b1e1a22SJuan Quintela * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 147b1e1a22SJuan Quintela * copies of the Software, and to permit persons to whom the Software is 157b1e1a22SJuan Quintela * furnished to do so, subject to the following conditions: 167b1e1a22SJuan Quintela * 177b1e1a22SJuan Quintela * The above copyright notice and this permission notice shall be included in 187b1e1a22SJuan Quintela * all copies or substantial portions of the Software. 197b1e1a22SJuan Quintela * 207b1e1a22SJuan Quintela * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 217b1e1a22SJuan Quintela * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 227b1e1a22SJuan Quintela * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 237b1e1a22SJuan Quintela * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 247b1e1a22SJuan Quintela * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 257b1e1a22SJuan Quintela * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 267b1e1a22SJuan Quintela * THE SOFTWARE. 277b1e1a22SJuan Quintela */ 287b1e1a22SJuan Quintela 297b1e1a22SJuan Quintela #ifndef QEMU_MIGRATION_RAM_H 307b1e1a22SJuan Quintela #define QEMU_MIGRATION_RAM_H 317b1e1a22SJuan Quintela 329af23989SMarkus Armbruster #include "qapi/qapi-types-migration.h" 337b1e1a22SJuan Quintela #include "exec/cpu-common.h" 3471bb07dbSJuan Quintela #include "io/channel.h" 357b1e1a22SJuan Quintela 369360447dSJuan Quintela extern MigrationStats ram_counters; 379360447dSJuan Quintela extern XBZRLECacheStats xbzrle_counters; 3876e03000SXiao Guangrong extern CompressionStats compression_counters; 399360447dSJuan Quintela 403ded54b1SChuan Zheng bool ramblock_is_ignored(RAMBlock *block); 413ded54b1SChuan Zheng /* Should be holding either ram_list.mutex, or the RCU lock. */ 423ded54b1SChuan Zheng #define RAMBLOCK_FOREACH_NOT_IGNORED(block) \ 433ded54b1SChuan Zheng INTERNAL_RAMBLOCK_FOREACH(block) \ 443ded54b1SChuan Zheng if (ramblock_is_ignored(block)) {} else 453ded54b1SChuan Zheng 463ded54b1SChuan Zheng #define RAMBLOCK_FOREACH_MIGRATABLE(block) \ 473ded54b1SChuan Zheng INTERNAL_RAMBLOCK_FOREACH(block) \ 483ded54b1SChuan Zheng if (!qemu_ram_is_migratable(block)) {} else 493ded54b1SChuan Zheng 508b9407a0SMarkus Armbruster int xbzrle_cache_resize(uint64_t new_size, Error **errp); 517b1e1a22SJuan Quintela uint64_t ram_bytes_remaining(void); 527b1e1a22SJuan Quintela uint64_t ram_bytes_total(void); 5391fe9a8dSRao, Lei void mig_throttle_counter_reset(void); 547b1e1a22SJuan Quintela 557b1e1a22SJuan Quintela uint64_t ram_pagesize_summary(void); 567b1e1a22SJuan Quintela int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len); 577b1e1a22SJuan Quintela void acct_update_position(QEMUFile *f, size_t size, bool zero); 587b1e1a22SJuan Quintela void ram_postcopy_migrated_memory_release(MigrationState *ms); 597b1e1a22SJuan Quintela /* For outgoing discard bitmap */ 60739fcc1bSPeter Xu void ram_postcopy_send_discard_bitmap(MigrationState *ms); 617b1e1a22SJuan Quintela /* For incoming postcopy discard */ 627b1e1a22SJuan Quintela int ram_discard_range(const char *block_name, uint64_t start, size_t length); 637b1e1a22SJuan Quintela int ram_postcopy_incoming_init(MigrationIncomingState *mis); 6436f62f11SPeter Xu int ram_load_postcopy(QEMUFile *f, int channel); 657b1e1a22SJuan Quintela 667b1e1a22SJuan Quintela void ram_handle_compressed(void *host, uint8_t ch, uint64_t size); 67f9494614SAlexey Perevalov 6826a26069SJuan Quintela void ram_transferred_add(uint64_t bytes); 6926a26069SJuan Quintela 70f9494614SAlexey Perevalov int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr); 711cba9f6eSDr. David Alan Gilbert bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset); 72f9494614SAlexey Perevalov void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr); 73f9494614SAlexey Perevalov void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr); 74a335debbSPeter Xu int64_t ramblock_recv_bitmap_send(QEMUFile *file, 75a335debbSPeter Xu const char *block_name); 76a335debbSPeter Xu int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *rb); 779470c5e0SDavid Hildenbrand bool ramblock_page_is_discarded(RAMBlock *rb, ram_addr_t start); 7836f62f11SPeter Xu void postcopy_preempt_shutdown_file(MigrationState *s); 7936f62f11SPeter Xu void *postcopy_preempt_thread(void *opaque); 80f9494614SAlexey Perevalov 8113af18f2SZhang Chen /* ram cache */ 8213af18f2SZhang Chen int colo_init_ram_cache(void); 8324fa16f8SLukas Straub void colo_flush_ram_cache(void); 8413af18f2SZhang Chen void colo_release_ram_cache(void); 850393031aSzhanghailiang void colo_incoming_start_dirty_log(void); 8613af18f2SZhang Chen 876e8c25b4SAndrey Gruzdev /* Background snapshot */ 886e8c25b4SAndrey Gruzdev bool ram_write_tracking_available(void); 896e8c25b4SAndrey Gruzdev bool ram_write_tracking_compatible(void); 90eeccb99cSAndrey Gruzdev void ram_write_tracking_prepare(void); 91278e2f55SAndrey Gruzdev int ram_write_tracking_start(void); 92278e2f55SAndrey Gruzdev void ram_write_tracking_stop(void); 936e8c25b4SAndrey Gruzdev 94d59c40ccSLeonardo Bras void dirty_sync_missed_zero_copy(void); 95d59c40ccSLeonardo Bras 967b1e1a22SJuan Quintela #endif 97