1 /* 2 * QEMU migration capabilities 3 * 4 * Copyright (c) 2012-2023 Red Hat Inc 5 * 6 * Authors: 7 * Orit Wasserman <owasserm@redhat.com> 8 * Juan Quintela <quintela@redhat.com> 9 * 10 * This work is licensed under the terms of the GNU GPL, version 2 or later. 11 * See the COPYING file in the top-level directory. 12 */ 13 14 #ifndef QEMU_MIGRATION_OPTIONS_H 15 #define QEMU_MIGRATION_OPTIONS_H 16 17 /* constants */ 18 19 /* Amount of time to allocate to each "chunk" of bandwidth-throttled 20 * data. */ 21 #define BUFFER_DELAY 100 22 #define XFER_LIMIT_RATIO (1000 / BUFFER_DELAY) 23 24 /* capabilities */ 25 26 bool migrate_auto_converge(void); 27 bool migrate_background_snapshot(void); 28 bool migrate_block(void); 29 bool migrate_colo(void); 30 bool migrate_compress(void); 31 bool migrate_dirty_bitmaps(void); 32 bool migrate_events(void); 33 bool migrate_ignore_shared(void); 34 bool migrate_late_block_activate(void); 35 bool migrate_multifd(void); 36 bool migrate_pause_before_switchover(void); 37 bool migrate_postcopy_blocktime(void); 38 bool migrate_postcopy_preempt(void); 39 bool migrate_postcopy_ram(void); 40 bool migrate_rdma_pin_all(void); 41 bool migrate_release_ram(void); 42 bool migrate_return_path(void); 43 bool migrate_validate_uuid(void); 44 bool migrate_xbzrle(void); 45 bool migrate_zero_blocks(void); 46 bool migrate_zero_copy_send(void); 47 48 /* 49 * pseudo capabilities 50 * 51 * These are functions that are used in a similar way to capabilities 52 * check, but they are not a capability. 53 */ 54 55 bool migrate_postcopy(void); 56 bool migrate_tls(void); 57 58 /* capabilities helpers */ 59 60 bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp); 61 bool migrate_cap_set(int cap, bool value, Error **errp); 62 63 /* parameters */ 64 65 bool migrate_block_incremental(void); 66 uint32_t migrate_checkpoint_delay(void); 67 int migrate_compress_level(void); 68 int migrate_compress_threads(void); 69 int migrate_compress_wait_thread(void); 70 uint8_t migrate_cpu_throttle_increment(void); 71 uint8_t migrate_cpu_throttle_initial(void); 72 bool migrate_cpu_throttle_tailslow(void); 73 int migrate_decompress_threads(void); 74 uint8_t migrate_max_cpu_throttle(void); 75 uint64_t migrate_max_bandwidth(void); 76 int64_t migrate_max_postcopy_bandwidth(void); 77 int migrate_multifd_channels(void); 78 MultiFDCompression migrate_multifd_compression(void); 79 int migrate_multifd_zlib_level(void); 80 int migrate_multifd_zstd_level(void); 81 uint8_t migrate_throttle_trigger_threshold(void); 82 uint64_t migrate_xbzrle_cache_size(void); 83 84 /* parameters helpers */ 85 86 bool migrate_params_check(MigrationParameters *params, Error **errp); 87 88 #endif 89