xref: /openbmc/qemu/migration/savevm.h (revision ed75658a)
1 /*
2  * QEMU save vm functions
3  *
4  * Copyright (c) 2003-2008 Fabrice Bellard
5  * Copyright (c) 2009-2017 Red Hat Inc
6  *
7  * Authors:
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 MIGRATION_SAVEVM_H
15 #define MIGRATION_SAVEVM_H
16 
17 #define QEMU_VM_FILE_MAGIC           0x5145564d
18 #define QEMU_VM_FILE_VERSION_COMPAT  0x00000002
19 #define QEMU_VM_FILE_VERSION         0x00000003
20 
21 #define QEMU_VM_EOF                  0x00
22 #define QEMU_VM_SECTION_START        0x01
23 #define QEMU_VM_SECTION_PART         0x02
24 #define QEMU_VM_SECTION_END          0x03
25 #define QEMU_VM_SECTION_FULL         0x04
26 #define QEMU_VM_SUBSECTION           0x05
27 #define QEMU_VM_VMDESCRIPTION        0x06
28 #define QEMU_VM_CONFIGURATION        0x07
29 #define QEMU_VM_COMMAND              0x08
30 #define QEMU_VM_SECTION_FOOTER       0x7e
31 
32 bool qemu_savevm_state_blocked(Error **errp);
33 void qemu_savevm_non_migratable_list(strList **reasons);
34 int qemu_savevm_state_prepare(Error **errp);
35 void qemu_savevm_state_setup(QEMUFile *f);
36 bool qemu_savevm_state_guest_unplug_pending(void);
37 int qemu_savevm_state_resume_prepare(MigrationState *s);
38 void qemu_savevm_state_header(QEMUFile *f);
39 int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
40 void qemu_savevm_state_cleanup(void);
41 void qemu_savevm_state_complete_postcopy(QEMUFile *f);
42 int qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only,
43                                        bool inactivate_disks);
44 void qemu_savevm_state_pending_exact(uint64_t *must_precopy,
45                                      uint64_t *can_postcopy);
46 void qemu_savevm_state_pending_estimate(uint64_t *must_precopy,
47                                         uint64_t *can_postcopy);
48 void qemu_savevm_send_ping(QEMUFile *f, uint32_t value);
49 void qemu_savevm_send_open_return_path(QEMUFile *f);
50 int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len);
51 void qemu_savevm_send_postcopy_advise(QEMUFile *f);
52 void qemu_savevm_send_postcopy_listen(QEMUFile *f);
53 void qemu_savevm_send_postcopy_run(QEMUFile *f);
54 void qemu_savevm_send_postcopy_resume(QEMUFile *f);
55 void qemu_savevm_send_recv_bitmap(QEMUFile *f, char *block_name);
56 
57 void qemu_savevm_send_postcopy_ram_discard(QEMUFile *f, const char *name,
58                                            uint16_t len,
59                                            uint64_t *start_list,
60                                            uint64_t *length_list);
61 void qemu_savevm_send_colo_enable(QEMUFile *f);
62 void qemu_savevm_live_state(QEMUFile *f);
63 int qemu_save_device_state(QEMUFile *f);
64 
65 int qemu_loadvm_state(QEMUFile *f);
66 void qemu_loadvm_state_cleanup(void);
67 int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis);
68 int qemu_load_device_state(QEMUFile *f);
69 int qemu_loadvm_approve_switchover(void);
70 int qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
71         bool in_postcopy, bool inactivate_disks);
72 
73 #endif
74