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Juan Quintela7b1e1a22017-04-17 20:26:27 +02001/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2011-2015 Red Hat Inc
6 *
7 * Authors:
8 * Juan Quintela <quintela@redhat.com>
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 * THE SOFTWARE.
27 */
28
29#ifndef QEMU_MIGRATION_RAM_H
30#define QEMU_MIGRATION_RAM_H
31
Markus Armbruster9af23982018-02-11 10:36:01 +010032#include "qapi/qapi-types-migration.h"
Juan Quintela7b1e1a22017-04-17 20:26:27 +020033#include "exec/cpu-common.h"
Juan Quintela71bb07d2018-02-19 19:01:03 +010034#include "io/channel.h"
Juan Quintela7b1e1a22017-04-17 20:26:27 +020035
Juan Quintela93604472017-06-06 19:49:03 +020036extern MigrationStats ram_counters;
37extern XBZRLECacheStats xbzrle_counters;
Xiao Guangrong76e03002018-09-06 15:01:00 +080038extern CompressionStats compression_counters;
Juan Quintela93604472017-06-06 19:49:03 +020039
Juan Quintelac9dede22017-10-06 23:03:55 +020040int xbzrle_cache_resize(int64_t new_size, Error **errp);
Juan Quintela7b1e1a22017-04-17 20:26:27 +020041uint64_t ram_bytes_remaining(void);
Juan Quintela7b1e1a22017-04-17 20:26:27 +020042uint64_t ram_bytes_total(void);
43
Juan Quintela7b1e1a22017-04-17 20:26:27 +020044uint64_t ram_pagesize_summary(void);
Juan Quintela7b1e1a22017-04-17 20:26:27 +020045int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len);
46void acct_update_position(QEMUFile *f, size_t size, bool zero);
Juan Quintela7b1e1a22017-04-17 20:26:27 +020047void ram_debug_dump_bitmap(unsigned long *todump, bool expected,
48 unsigned long pages);
49void ram_postcopy_migrated_memory_release(MigrationState *ms);
50/* For outgoing discard bitmap */
51int ram_postcopy_send_discard_bitmap(MigrationState *ms);
52/* For incoming postcopy discard */
53int ram_discard_range(const char *block_name, uint64_t start, size_t length);
54int ram_postcopy_incoming_init(MigrationIncomingState *mis);
55
56void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
Alexey Perevalovf9494612017-10-05 14:13:20 +030057
58int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr);
Dr. David Alan Gilbert1cba9f62018-03-12 17:21:08 +000059bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset);
Alexey Perevalovf9494612017-10-05 14:13:20 +030060void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr);
61void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr);
Peter Xua335deb2018-05-02 18:47:28 +080062int64_t ramblock_recv_bitmap_send(QEMUFile *file,
63 const char *block_name);
64int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *rb);
Alexey Perevalovf9494612017-10-05 14:13:20 +030065
Zhang Chen13af18f2018-09-03 12:38:48 +080066/* ram cache */
67int colo_init_ram_cache(void);
Lukas Straub24fa16f2020-05-11 13:10:51 +020068void colo_flush_ram_cache(void);
Zhang Chen13af18f2018-09-03 12:38:48 +080069void colo_release_ram_cache(void);
zhanghailiang03930312020-02-24 14:54:10 +080070void colo_incoming_start_dirty_log(void);
Zhang Chen13af18f2018-09-03 12:38:48 +080071
Juan Quintela7b1e1a22017-04-17 20:26:27 +020072#endif