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aliguoria672b462008-11-11 21:33:36 +00001/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
aliguoria672b462008-11-11 21:33:36 +000024
blueswir1d40cdb12009-03-07 16:52:02 +000025#include "config-host.h"
blueswir1511d2b12009-03-07 15:32:56 +000026#include "qemu-common.h"
27#include "hw/hw.h"
Alex Williamson7685ee62010-06-25 11:09:14 -060028#include "hw/qdev.h"
Paolo Bonzini1422e322012-10-24 08:43:34 +020029#include "net/net.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010030#include "monitor/monitor.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010031#include "sysemu/sysemu.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010032#include "qemu/timer.h"
blueswir1511d2b12009-03-07 15:32:56 +000033#include "audio/audio.h"
Paolo Bonzinicaf71f82012-12-17 18:19:50 +010034#include "migration/migration.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010035#include "qemu/sockets.h"
36#include "qemu/queue.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010037#include "sysemu/cpus.h"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010038#include "exec/memory.h"
Stefano Stabellinia7ae8352012-01-25 12:24:51 +000039#include "qmp-commands.h"
Juan Quintela517a13c2012-05-21 23:46:44 +020040#include "trace.h"
Orit Wasserman28085f72013-03-22 16:47:58 +020041#include "qemu/iov.h"
Wenchao Xiade08c602013-05-25 11:09:43 +080042#include "block/snapshot.h"
Wenchao Xiaf364ec62013-05-25 11:09:44 +080043#include "block/qapi.h"
blueswir1511d2b12009-03-07 15:32:56 +000044
aliguoria672b462008-11-11 21:33:36 +000045#define SELF_ANNOUNCE_ROUNDS 5
aliguoria672b462008-11-11 21:33:36 +000046
Nolan18995b92009-10-15 16:53:55 -070047#ifndef ETH_P_RARP
Stefan Bergerf8778a72010-04-24 08:54:07 -040048#define ETH_P_RARP 0x8035
Nolan18995b92009-10-15 16:53:55 -070049#endif
50#define ARP_HTYPE_ETH 0x0001
51#define ARP_PTYPE_IP 0x0800
52#define ARP_OP_REQUEST_REV 0x3
53
54static int announce_self_create(uint8_t *buf,
Eduardo Habkost5cecf412013-11-28 12:01:12 -020055 uint8_t *mac_addr)
aliguoria672b462008-11-11 21:33:36 +000056{
Nolan18995b92009-10-15 16:53:55 -070057 /* Ethernet header. */
58 memset(buf, 0xff, 6); /* destination MAC addr */
59 memcpy(buf + 6, mac_addr, 6); /* source MAC addr */
60 *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */
aliguoria672b462008-11-11 21:33:36 +000061
Nolan18995b92009-10-15 16:53:55 -070062 /* RARP header. */
63 *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */
64 *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */
65 *(buf + 18) = 6; /* hardware addr length (ethernet) */
66 *(buf + 19) = 4; /* protocol addr length (IPv4) */
67 *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */
68 memcpy(buf + 22, mac_addr, 6); /* source hw addr */
69 memset(buf + 28, 0x00, 4); /* source protocol addr */
70 memcpy(buf + 32, mac_addr, 6); /* target hw addr */
71 memset(buf + 38, 0x00, 4); /* target protocol addr */
aliguoria672b462008-11-11 21:33:36 +000072
Nolan18995b92009-10-15 16:53:55 -070073 /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
74 memset(buf + 42, 0x00, 18);
aliguoria672b462008-11-11 21:33:36 +000075
Nolan18995b92009-10-15 16:53:55 -070076 return 60; /* len (FCS will be added by hardware) */
aliguoria672b462008-11-11 21:33:36 +000077}
78
Mark McLoughlinf401ca22009-11-25 18:49:32 +000079static void qemu_announce_self_iter(NICState *nic, void *opaque)
80{
81 uint8_t buf[60];
82 int len;
83
84 len = announce_self_create(buf, nic->conf->macaddr.a);
85
Jason Wangb356f762013-01-30 19:12:22 +080086 qemu_send_packet_raw(qemu_get_queue(nic), buf, len);
Mark McLoughlinf401ca22009-11-25 18:49:32 +000087}
88
89
Gleb Natapoved8b3302009-05-21 17:17:44 +030090static void qemu_announce_self_once(void *opaque)
aliguoria672b462008-11-11 21:33:36 +000091{
Gleb Natapoved8b3302009-05-21 17:17:44 +030092 static int count = SELF_ANNOUNCE_ROUNDS;
93 QEMUTimer *timer = *(QEMUTimer **)opaque;
aliguoria672b462008-11-11 21:33:36 +000094
Mark McLoughlinf401ca22009-11-25 18:49:32 +000095 qemu_foreach_nic(qemu_announce_self_iter, NULL);
96
Nolan18995b92009-10-15 16:53:55 -070097 if (--count) {
98 /* delay 50ms, 150ms, 250ms, ... */
Alex Blighbc72ad62013-08-21 16:03:08 +010099 timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) +
Nolan18995b92009-10-15 16:53:55 -0700100 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100);
Gleb Natapoved8b3302009-05-21 17:17:44 +0300101 } else {
Eduardo Habkost5cecf412013-11-28 12:01:12 -0200102 timer_del(timer);
103 timer_free(timer);
Gleb Natapoved8b3302009-05-21 17:17:44 +0300104 }
105}
106
107void qemu_announce_self(void)
108{
Eduardo Habkost5cecf412013-11-28 12:01:12 -0200109 static QEMUTimer *timer;
110 timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer);
111 qemu_announce_self_once(&timer);
aliguoria672b462008-11-11 21:33:36 +0000112}
113
114/***********************************************************/
115/* savevm/loadvm support */
116
Kevin Wolf05fcc842013-04-05 21:27:54 +0200117static ssize_t block_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
118 int64_t pos)
119{
120 int ret;
121 QEMUIOVector qiov;
122
123 qemu_iovec_init_external(&qiov, iov, iovcnt);
124 ret = bdrv_writev_vmstate(opaque, &qiov, pos);
125 if (ret < 0) {
126 return ret;
127 }
128
129 return qiov.size;
130}
131
aliguori178e08a2009-04-05 19:10:55 +0000132static int block_put_buffer(void *opaque, const uint8_t *buf,
aliguoria672b462008-11-11 21:33:36 +0000133 int64_t pos, int size)
134{
Christoph Hellwig45566e92009-07-10 23:11:57 +0200135 bdrv_save_vmstate(opaque, buf, pos, size);
aliguoria672b462008-11-11 21:33:36 +0000136 return size;
137}
138
aliguori178e08a2009-04-05 19:10:55 +0000139static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
aliguoria672b462008-11-11 21:33:36 +0000140{
Christoph Hellwig45566e92009-07-10 23:11:57 +0200141 return bdrv_load_vmstate(opaque, buf, pos, size);
aliguoria672b462008-11-11 21:33:36 +0000142}
143
144static int bdrv_fclose(void *opaque)
145{
Paolo Bonziniad492c92012-06-06 00:04:50 +0200146 return bdrv_flush(opaque);
aliguoria672b462008-11-11 21:33:36 +0000147}
148
Paolo Bonzini9229bf32012-08-08 10:15:15 +0200149static const QEMUFileOps bdrv_read_ops = {
150 .get_buffer = block_get_buffer,
151 .close = bdrv_fclose
152};
153
154static const QEMUFileOps bdrv_write_ops = {
Kevin Wolf05fcc842013-04-05 21:27:54 +0200155 .put_buffer = block_put_buffer,
156 .writev_buffer = block_writev_buffer,
157 .close = bdrv_fclose
Paolo Bonzini9229bf32012-08-08 10:15:15 +0200158};
159
Christoph Hellwig45566e92009-07-10 23:11:57 +0200160static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
aliguoria672b462008-11-11 21:33:36 +0000161{
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200162 if (is_writable) {
Paolo Bonzini9229bf32012-08-08 10:15:15 +0200163 return qemu_fopen_ops(bs, &bdrv_write_ops);
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200164 }
Paolo Bonzini9229bf32012-08-08 10:15:15 +0200165 return qemu_fopen_ops(bs, &bdrv_read_ops);
aliguoria672b462008-11-11 21:33:36 +0000166}
167
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200168
Eduardo Habkostbb1a6d82013-11-29 12:26:02 -0200169/* QEMUFile timer support.
170 * Not in qemu-file.c to not add qemu-timer.c as dependency to qemu-file.c
171 */
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200172
Alex Bligh40daca52013-08-21 16:03:02 +0100173void timer_put(QEMUFile *f, QEMUTimer *ts)
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200174{
175 uint64_t expire_time;
176
Alex Blighe93379b2013-08-21 16:02:39 +0100177 expire_time = timer_expire_time_ns(ts);
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200178 qemu_put_be64(f, expire_time);
179}
180
Alex Bligh40daca52013-08-21 16:03:02 +0100181void timer_get(QEMUFile *f, QEMUTimer *ts)
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200182{
183 uint64_t expire_time;
184
185 expire_time = qemu_get_be64(f);
186 if (expire_time != -1) {
Alex Blighbc72ad62013-08-21 16:03:08 +0100187 timer_mod_ns(ts, expire_time);
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200188 } else {
Alex Blighbc72ad62013-08-21 16:03:08 +0100189 timer_del(ts);
Paolo Bonzini2ff68d02011-09-12 16:21:44 +0200190 }
191}
192
193
Eduardo Habkostbb1a6d82013-11-29 12:26:02 -0200194/* VMState timer support.
195 * Not in vmstate.c to not add qemu-timer.c as dependency to vmstate.c
196 */
Juan Quinteladde04632009-08-20 19:42:26 +0200197
198static int get_timer(QEMUFile *f, void *pv, size_t size)
199{
200 QEMUTimer *v = pv;
Alex Bligh40daca52013-08-21 16:03:02 +0100201 timer_get(f, v);
Juan Quinteladde04632009-08-20 19:42:26 +0200202 return 0;
203}
204
Juan Quintela84e2e3e2009-09-29 22:48:20 +0200205static void put_timer(QEMUFile *f, void *pv, size_t size)
Juan Quinteladde04632009-08-20 19:42:26 +0200206{
Juan Quintela84e2e3e2009-09-29 22:48:20 +0200207 QEMUTimer *v = pv;
Alex Bligh40daca52013-08-21 16:03:02 +0100208 timer_put(f, v);
Juan Quinteladde04632009-08-20 19:42:26 +0200209}
210
211const VMStateInfo vmstate_info_timer = {
212 .name = "timer",
213 .get = get_timer,
214 .put = put_timer,
215};
216
Peter Maydell08e99e22012-10-30 07:45:12 +0000217
Alex Williamson7685ee62010-06-25 11:09:14 -0600218typedef struct CompatEntry {
219 char idstr[256];
220 int instance_id;
221} CompatEntry;
222
aliguoria672b462008-11-11 21:33:36 +0000223typedef struct SaveStateEntry {
Blue Swirl72cf2d42009-09-12 07:36:22 +0000224 QTAILQ_ENTRY(SaveStateEntry) entry;
aliguoria672b462008-11-11 21:33:36 +0000225 char idstr[256];
226 int instance_id;
Jan Kiszka4d2ffa02010-05-15 13:32:40 +0200227 int alias_id;
aliguoria672b462008-11-11 21:33:36 +0000228 int version_id;
229 int section_id;
Juan Quintela22ea40f2012-06-26 17:19:10 +0200230 SaveVMHandlers *ops;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200231 const VMStateDescription *vmsd;
aliguoria672b462008-11-11 21:33:36 +0000232 void *opaque;
Alex Williamson7685ee62010-06-25 11:09:14 -0600233 CompatEntry *compat;
Cam Macdonell24312962010-07-26 18:11:00 -0600234 int no_migrate;
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000235 int is_ram;
aliguoria672b462008-11-11 21:33:36 +0000236} SaveStateEntry;
237
lirans@il.ibm.comc163b5c2009-11-02 15:40:58 +0200238
Blue Swirl72cf2d42009-09-12 07:36:22 +0000239static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
240 QTAILQ_HEAD_INITIALIZER(savevm_handlers);
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200241static int global_section_id;
aliguoria672b462008-11-11 21:33:36 +0000242
Juan Quintela8718e992009-09-01 02:12:31 +0200243static int calculate_new_instance_id(const char *idstr)
244{
245 SaveStateEntry *se;
246 int instance_id = 0;
247
Blue Swirl72cf2d42009-09-12 07:36:22 +0000248 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Juan Quintela8718e992009-09-01 02:12:31 +0200249 if (strcmp(idstr, se->idstr) == 0
250 && instance_id <= se->instance_id) {
251 instance_id = se->instance_id + 1;
252 }
253 }
254 return instance_id;
255}
256
Alex Williamson7685ee62010-06-25 11:09:14 -0600257static int calculate_compat_instance_id(const char *idstr)
258{
259 SaveStateEntry *se;
260 int instance_id = 0;
261
262 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200263 if (!se->compat) {
Alex Williamson7685ee62010-06-25 11:09:14 -0600264 continue;
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200265 }
Alex Williamson7685ee62010-06-25 11:09:14 -0600266
267 if (strcmp(idstr, se->compat->idstr) == 0
268 && instance_id <= se->compat->instance_id) {
269 instance_id = se->compat->instance_id + 1;
270 }
271 }
272 return instance_id;
273}
274
aliguoria672b462008-11-11 21:33:36 +0000275/* TODO: Individual devices generally have very little idea about the rest
276 of the system, so instance_id should be removed/replaced.
277 Meanwhile pass -1 as instance_id if you do not already have a clearly
278 distinguishing id for all instances of your device class. */
Alex Williamson0be71e32010-06-25 11:09:07 -0600279int register_savevm_live(DeviceState *dev,
280 const char *idstr,
aliguoria672b462008-11-11 21:33:36 +0000281 int instance_id,
282 int version_id,
Juan Quintela7908c782012-06-26 18:46:10 +0200283 SaveVMHandlers *ops,
aliguoria672b462008-11-11 21:33:36 +0000284 void *opaque)
285{
Juan Quintela8718e992009-09-01 02:12:31 +0200286 SaveStateEntry *se;
aliguoria672b462008-11-11 21:33:36 +0000287
Anthony Liguori7267c092011-08-20 22:09:37 -0500288 se = g_malloc0(sizeof(SaveStateEntry));
aliguoria672b462008-11-11 21:33:36 +0000289 se->version_id = version_id;
290 se->section_id = global_section_id++;
Juan Quintela7908c782012-06-26 18:46:10 +0200291 se->ops = ops;
aliguoria672b462008-11-11 21:33:36 +0000292 se->opaque = opaque;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200293 se->vmsd = NULL;
Cam Macdonell24312962010-07-26 18:11:00 -0600294 se->no_migrate = 0;
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000295 /* if this is a live_savem then set is_ram */
Juan Quintela16310a32012-06-28 15:31:37 +0200296 if (ops->save_live_setup != NULL) {
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000297 se->is_ram = 1;
298 }
aliguoria672b462008-11-11 21:33:36 +0000299
Anthony Liguori09e5ab62012-02-03 12:28:43 -0600300 if (dev) {
301 char *id = qdev_get_dev_path(dev);
Alex Williamson7685ee62010-06-25 11:09:14 -0600302 if (id) {
303 pstrcpy(se->idstr, sizeof(se->idstr), id);
304 pstrcat(se->idstr, sizeof(se->idstr), "/");
Anthony Liguori7267c092011-08-20 22:09:37 -0500305 g_free(id);
Alex Williamson7685ee62010-06-25 11:09:14 -0600306
Anthony Liguori7267c092011-08-20 22:09:37 -0500307 se->compat = g_malloc0(sizeof(CompatEntry));
Alex Williamson7685ee62010-06-25 11:09:14 -0600308 pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
309 se->compat->instance_id = instance_id == -1 ?
310 calculate_compat_instance_id(idstr) : instance_id;
311 instance_id = -1;
312 }
313 }
314 pstrcat(se->idstr, sizeof(se->idstr), idstr);
315
Juan Quintela8718e992009-09-01 02:12:31 +0200316 if (instance_id == -1) {
Alex Williamson7685ee62010-06-25 11:09:14 -0600317 se->instance_id = calculate_new_instance_id(se->idstr);
Juan Quintela8718e992009-09-01 02:12:31 +0200318 } else {
319 se->instance_id = instance_id;
aliguoria672b462008-11-11 21:33:36 +0000320 }
Alex Williamson7685ee62010-06-25 11:09:14 -0600321 assert(!se->compat || se->instance_id == 0);
Juan Quintela8718e992009-09-01 02:12:31 +0200322 /* add at the end of list */
Blue Swirl72cf2d42009-09-12 07:36:22 +0000323 QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
aliguoria672b462008-11-11 21:33:36 +0000324 return 0;
325}
326
Alex Williamson0be71e32010-06-25 11:09:07 -0600327int register_savevm(DeviceState *dev,
328 const char *idstr,
aliguoria672b462008-11-11 21:33:36 +0000329 int instance_id,
330 int version_id,
331 SaveStateHandler *save_state,
332 LoadStateHandler *load_state,
333 void *opaque)
334{
Juan Quintela7908c782012-06-26 18:46:10 +0200335 SaveVMHandlers *ops = g_malloc0(sizeof(SaveVMHandlers));
336 ops->save_state = save_state;
337 ops->load_state = load_state;
Alex Williamson0be71e32010-06-25 11:09:07 -0600338 return register_savevm_live(dev, idstr, instance_id, version_id,
Juan Quintela7908c782012-06-26 18:46:10 +0200339 ops, opaque);
aliguoria672b462008-11-11 21:33:36 +0000340}
341
Alex Williamson0be71e32010-06-25 11:09:07 -0600342void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque)
aliguori41bd13a2009-04-17 17:10:59 +0000343{
Juan Quintela8718e992009-09-01 02:12:31 +0200344 SaveStateEntry *se, *new_se;
Alex Williamson7685ee62010-06-25 11:09:14 -0600345 char id[256] = "";
346
Anthony Liguori09e5ab62012-02-03 12:28:43 -0600347 if (dev) {
348 char *path = qdev_get_dev_path(dev);
Alex Williamson7685ee62010-06-25 11:09:14 -0600349 if (path) {
350 pstrcpy(id, sizeof(id), path);
351 pstrcat(id, sizeof(id), "/");
Anthony Liguori7267c092011-08-20 22:09:37 -0500352 g_free(path);
Alex Williamson7685ee62010-06-25 11:09:14 -0600353 }
354 }
355 pstrcat(id, sizeof(id), idstr);
aliguori41bd13a2009-04-17 17:10:59 +0000356
Blue Swirl72cf2d42009-09-12 07:36:22 +0000357 QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
Alex Williamson7685ee62010-06-25 11:09:14 -0600358 if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) {
Blue Swirl72cf2d42009-09-12 07:36:22 +0000359 QTAILQ_REMOVE(&savevm_handlers, se, entry);
Alex Williamson69e58af2010-07-21 08:35:31 -0600360 if (se->compat) {
Anthony Liguori7267c092011-08-20 22:09:37 -0500361 g_free(se->compat);
Alex Williamson69e58af2010-07-21 08:35:31 -0600362 }
Juan Quintela22ea40f2012-06-26 17:19:10 +0200363 g_free(se->ops);
Anthony Liguori7267c092011-08-20 22:09:37 -0500364 g_free(se);
aliguori41bd13a2009-04-17 17:10:59 +0000365 }
aliguori41bd13a2009-04-17 17:10:59 +0000366 }
367}
368
Alex Williamson0be71e32010-06-25 11:09:07 -0600369int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
Jan Kiszka4d2ffa02010-05-15 13:32:40 +0200370 const VMStateDescription *vmsd,
371 void *opaque, int alias_id,
372 int required_for_version)
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200373{
Juan Quintela8718e992009-09-01 02:12:31 +0200374 SaveStateEntry *se;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200375
Jan Kiszka4d2ffa02010-05-15 13:32:40 +0200376 /* If this triggers, alias support can be dropped for the vmsd. */
377 assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
378
Anthony Liguori7267c092011-08-20 22:09:37 -0500379 se = g_malloc0(sizeof(SaveStateEntry));
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200380 se->version_id = vmsd->version_id;
381 se->section_id = global_section_id++;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200382 se->opaque = opaque;
383 se->vmsd = vmsd;
Jan Kiszka4d2ffa02010-05-15 13:32:40 +0200384 se->alias_id = alias_id;
Gerd Hoffmann2837c8e2011-07-08 10:44:35 +0200385 se->no_migrate = vmsd->unmigratable;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200386
Anthony Liguori09e5ab62012-02-03 12:28:43 -0600387 if (dev) {
388 char *id = qdev_get_dev_path(dev);
Alex Williamson7685ee62010-06-25 11:09:14 -0600389 if (id) {
390 pstrcpy(se->idstr, sizeof(se->idstr), id);
391 pstrcat(se->idstr, sizeof(se->idstr), "/");
Anthony Liguori7267c092011-08-20 22:09:37 -0500392 g_free(id);
Alex Williamson7685ee62010-06-25 11:09:14 -0600393
Anthony Liguori7267c092011-08-20 22:09:37 -0500394 se->compat = g_malloc0(sizeof(CompatEntry));
Alex Williamson7685ee62010-06-25 11:09:14 -0600395 pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
396 se->compat->instance_id = instance_id == -1 ?
397 calculate_compat_instance_id(vmsd->name) : instance_id;
398 instance_id = -1;
399 }
400 }
401 pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
402
Juan Quintela8718e992009-09-01 02:12:31 +0200403 if (instance_id == -1) {
Alex Williamson7685ee62010-06-25 11:09:14 -0600404 se->instance_id = calculate_new_instance_id(se->idstr);
Juan Quintela8718e992009-09-01 02:12:31 +0200405 } else {
406 se->instance_id = instance_id;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200407 }
Alex Williamson7685ee62010-06-25 11:09:14 -0600408 assert(!se->compat || se->instance_id == 0);
Juan Quintela8718e992009-09-01 02:12:31 +0200409 /* add at the end of list */
Blue Swirl72cf2d42009-09-12 07:36:22 +0000410 QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry);
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200411 return 0;
412}
413
Alex Williamson0be71e32010-06-25 11:09:07 -0600414void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
415 void *opaque)
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200416{
Juan Quintela1eb75382009-09-10 03:04:29 +0200417 SaveStateEntry *se, *new_se;
418
Blue Swirl72cf2d42009-09-12 07:36:22 +0000419 QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) {
Juan Quintela1eb75382009-09-10 03:04:29 +0200420 if (se->vmsd == vmsd && se->opaque == opaque) {
Blue Swirl72cf2d42009-09-12 07:36:22 +0000421 QTAILQ_REMOVE(&savevm_handlers, se, entry);
Alex Williamson69e58af2010-07-21 08:35:31 -0600422 if (se->compat) {
Anthony Liguori7267c092011-08-20 22:09:37 -0500423 g_free(se->compat);
Alex Williamson69e58af2010-07-21 08:35:31 -0600424 }
Anthony Liguori7267c092011-08-20 22:09:37 -0500425 g_free(se);
Juan Quintela1eb75382009-09-10 03:04:29 +0200426 }
427 }
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200428}
429
Juan Quintela4082be42009-08-20 19:42:24 +0200430static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id)
431{
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200432 if (!se->vmsd) { /* Old style */
Juan Quintela22ea40f2012-06-26 17:19:10 +0200433 return se->ops->load_state(f, se->opaque, version_id);
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200434 }
435 return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
Juan Quintela4082be42009-08-20 19:42:24 +0200436}
437
Alex Williamsondc912122011-01-11 14:39:43 -0700438static void vmstate_save(QEMUFile *f, SaveStateEntry *se)
Juan Quintela4082be42009-08-20 19:42:24 +0200439{
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200440 if (!se->vmsd) { /* Old style */
Juan Quintela22ea40f2012-06-26 17:19:10 +0200441 se->ops->save_state(f, se->opaque);
Alex Williamsondc912122011-01-11 14:39:43 -0700442 return;
Juan Quintela9ed7d6a2009-08-20 19:42:25 +0200443 }
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200444 vmstate_save_state(f, se->vmsd, se->opaque);
Juan Quintela4082be42009-08-20 19:42:24 +0200445}
446
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200447bool qemu_savevm_state_blocked(Error **errp)
Alex Williamsondc912122011-01-11 14:39:43 -0700448{
449 SaveStateEntry *se;
450
451 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
452 if (se->no_migrate) {
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200453 error_set(errp, QERR_MIGRATION_NOT_SUPPORTED, se->idstr);
Alex Williamsondc912122011-01-11 14:39:43 -0700454 return true;
455 }
456 }
457 return false;
458}
459
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100460void qemu_savevm_state_begin(QEMUFile *f,
461 const MigrationParams *params)
aliguoria672b462008-11-11 21:33:36 +0000462{
463 SaveStateEntry *se;
Juan Quintela39346382011-09-22 11:02:14 +0200464 int ret;
aliguoria672b462008-11-11 21:33:36 +0000465
lirans@il.ibm.comc163b5c2009-11-02 15:40:58 +0200466 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Juan Quintela22ea40f2012-06-26 17:19:10 +0200467 if (!se->ops || !se->ops->set_params) {
lirans@il.ibm.comc163b5c2009-11-02 15:40:58 +0200468 continue;
Isaku Yamahata6607ae22012-06-19 18:43:09 +0300469 }
Juan Quintela22ea40f2012-06-26 17:19:10 +0200470 se->ops->set_params(params, se->opaque);
lirans@il.ibm.comc163b5c2009-11-02 15:40:58 +0200471 }
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200472
aliguoria672b462008-11-11 21:33:36 +0000473 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
474 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
475
Blue Swirl72cf2d42009-09-12 07:36:22 +0000476 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
aliguoria672b462008-11-11 21:33:36 +0000477 int len;
478
Juan Quintelad1315aa2012-06-28 15:11:57 +0200479 if (!se->ops || !se->ops->save_live_setup) {
aliguoria672b462008-11-11 21:33:36 +0000480 continue;
Juan Quintela22ea40f2012-06-26 17:19:10 +0200481 }
Juan Quintela6bd68782012-06-27 10:59:15 +0200482 if (se->ops && se->ops->is_active) {
483 if (!se->ops->is_active(se->opaque)) {
484 continue;
485 }
486 }
aliguoria672b462008-11-11 21:33:36 +0000487 /* Section type */
488 qemu_put_byte(f, QEMU_VM_SECTION_START);
489 qemu_put_be32(f, se->section_id);
490
491 /* ID string */
492 len = strlen(se->idstr);
493 qemu_put_byte(f, len);
494 qemu_put_buffer(f, (uint8_t *)se->idstr, len);
495
496 qemu_put_be32(f, se->instance_id);
497 qemu_put_be32(f, se->version_id);
498
Juan Quintelad1315aa2012-06-28 15:11:57 +0200499 ret = se->ops->save_live_setup(f, se->opaque);
Juan Quintela29757252011-10-19 15:22:18 +0200500 if (ret < 0) {
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100501 qemu_file_set_error(f, ret);
502 break;
Juan Quintela29757252011-10-19 15:22:18 +0200503 }
aliguoria672b462008-11-11 21:33:36 +0000504 }
aliguoria672b462008-11-11 21:33:36 +0000505}
506
Juan Quintela39346382011-09-22 11:02:14 +0200507/*
Dong Xu Wang07f35072011-11-22 18:06:26 +0800508 * this function has three return values:
Juan Quintela39346382011-09-22 11:02:14 +0200509 * negative: there was one error, and we have -errno.
510 * 0 : We haven't finished, caller have to go again
511 * 1 : We have finished, we can go to complete phase
512 */
Luiz Capitulino539de122011-12-05 14:06:56 -0200513int qemu_savevm_state_iterate(QEMUFile *f)
aliguoria672b462008-11-11 21:33:36 +0000514{
515 SaveStateEntry *se;
516 int ret = 1;
517
Blue Swirl72cf2d42009-09-12 07:36:22 +0000518 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Juan Quintela16310a32012-06-28 15:31:37 +0200519 if (!se->ops || !se->ops->save_live_iterate) {
aliguoria672b462008-11-11 21:33:36 +0000520 continue;
Juan Quintela22ea40f2012-06-26 17:19:10 +0200521 }
Juan Quintela6bd68782012-06-27 10:59:15 +0200522 if (se->ops && se->ops->is_active) {
523 if (!se->ops->is_active(se->opaque)) {
524 continue;
525 }
526 }
Juan Quintelaaac844e2012-05-22 00:38:26 +0200527 if (qemu_file_rate_limit(f)) {
528 return 0;
529 }
Juan Quintela517a13c2012-05-21 23:46:44 +0200530 trace_savevm_section_start();
aliguoria672b462008-11-11 21:33:36 +0000531 /* Section type */
532 qemu_put_byte(f, QEMU_VM_SECTION_PART);
533 qemu_put_be32(f, se->section_id);
534
Juan Quintela16310a32012-06-28 15:31:37 +0200535 ret = se->ops->save_live_iterate(f, se->opaque);
Juan Quintela517a13c2012-05-21 23:46:44 +0200536 trace_savevm_section_end(se->section_id);
537
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100538 if (ret < 0) {
539 qemu_file_set_error(f, ret);
540 }
Juan Quintela29757252011-10-19 15:22:18 +0200541 if (ret <= 0) {
Jan Kiszka90697be2009-12-01 15:19:55 +0100542 /* Do not proceed to the next vmstate before this one reported
543 completion of the current stage. This serializes the migration
544 and reduces the probability that a faster changing state is
545 synchronized over and over again. */
546 break;
547 }
aliguoria672b462008-11-11 21:33:36 +0000548 }
Juan Quintela39346382011-09-22 11:02:14 +0200549 return ret;
aliguoria672b462008-11-11 21:33:36 +0000550}
551
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100552void qemu_savevm_state_complete(QEMUFile *f)
aliguoria672b462008-11-11 21:33:36 +0000553{
554 SaveStateEntry *se;
Juan Quintela29757252011-10-19 15:22:18 +0200555 int ret;
aliguoria672b462008-11-11 21:33:36 +0000556
Jan Kiszkaea375f92010-03-01 19:10:30 +0100557 cpu_synchronize_all_states();
558
Blue Swirl72cf2d42009-09-12 07:36:22 +0000559 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Juan Quintela16310a32012-06-28 15:31:37 +0200560 if (!se->ops || !se->ops->save_live_complete) {
aliguoria672b462008-11-11 21:33:36 +0000561 continue;
Juan Quintela22ea40f2012-06-26 17:19:10 +0200562 }
Juan Quintela6bd68782012-06-27 10:59:15 +0200563 if (se->ops && se->ops->is_active) {
564 if (!se->ops->is_active(se->opaque)) {
565 continue;
566 }
567 }
Juan Quintela517a13c2012-05-21 23:46:44 +0200568 trace_savevm_section_start();
aliguoria672b462008-11-11 21:33:36 +0000569 /* Section type */
570 qemu_put_byte(f, QEMU_VM_SECTION_END);
571 qemu_put_be32(f, se->section_id);
572
Juan Quintela16310a32012-06-28 15:31:37 +0200573 ret = se->ops->save_live_complete(f, se->opaque);
Juan Quintela517a13c2012-05-21 23:46:44 +0200574 trace_savevm_section_end(se->section_id);
Juan Quintela29757252011-10-19 15:22:18 +0200575 if (ret < 0) {
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100576 qemu_file_set_error(f, ret);
577 return;
Juan Quintela29757252011-10-19 15:22:18 +0200578 }
aliguoria672b462008-11-11 21:33:36 +0000579 }
580
Blue Swirl72cf2d42009-09-12 07:36:22 +0000581 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
aliguoria672b462008-11-11 21:33:36 +0000582 int len;
583
Juan Quintela22ea40f2012-06-26 17:19:10 +0200584 if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
Eduardo Habkost5cecf412013-11-28 12:01:12 -0200585 continue;
Juan Quintela22ea40f2012-06-26 17:19:10 +0200586 }
Juan Quintela517a13c2012-05-21 23:46:44 +0200587 trace_savevm_section_start();
aliguoria672b462008-11-11 21:33:36 +0000588 /* Section type */
589 qemu_put_byte(f, QEMU_VM_SECTION_FULL);
590 qemu_put_be32(f, se->section_id);
591
592 /* ID string */
593 len = strlen(se->idstr);
594 qemu_put_byte(f, len);
595 qemu_put_buffer(f, (uint8_t *)se->idstr, len);
596
597 qemu_put_be32(f, se->instance_id);
598 qemu_put_be32(f, se->version_id);
599
Alex Williamsondc912122011-01-11 14:39:43 -0700600 vmstate_save(f, se);
Juan Quintela517a13c2012-05-21 23:46:44 +0200601 trace_savevm_section_end(se->section_id);
aliguoria672b462008-11-11 21:33:36 +0000602 }
603
604 qemu_put_byte(f, QEMU_VM_EOF);
Paolo Bonziniedaae612013-02-22 17:36:29 +0100605 qemu_fflush(f);
aliguoria672b462008-11-11 21:33:36 +0000606}
607
Juan Quintelae4ed1542012-09-21 11:18:18 +0200608uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size)
609{
610 SaveStateEntry *se;
611 uint64_t ret = 0;
612
613 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
614 if (!se->ops || !se->ops->save_live_pending) {
615 continue;
616 }
617 if (se->ops && se->ops->is_active) {
618 if (!se->ops->is_active(se->opaque)) {
619 continue;
620 }
621 }
622 ret += se->ops->save_live_pending(f, se->opaque, max_size);
623 }
624 return ret;
625}
626
Juan Quintela65227732013-01-14 14:14:42 +0100627void qemu_savevm_state_cancel(void)
Jan Kiszka4ec7fcc2009-11-30 18:21:21 +0100628{
629 SaveStateEntry *se;
630
631 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
Juan Quintela9b5bfab2012-06-26 19:26:41 +0200632 if (se->ops && se->ops->cancel) {
633 se->ops->cancel(se->opaque);
Jan Kiszka4ec7fcc2009-11-30 18:21:21 +0100634 }
635 }
636}
637
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200638static int qemu_savevm_state(QEMUFile *f)
aliguoria672b462008-11-11 21:33:36 +0000639{
aliguoria672b462008-11-11 21:33:36 +0000640 int ret;
Isaku Yamahata6607ae22012-06-19 18:43:09 +0300641 MigrationParams params = {
642 .blk = 0,
643 .shared = 0
644 };
aliguoria672b462008-11-11 21:33:36 +0000645
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200646 if (qemu_savevm_state_blocked(NULL)) {
Paolo Bonzini04943eb2013-02-22 17:36:10 +0100647 return -EINVAL;
Alex Williamsondc912122011-01-11 14:39:43 -0700648 }
649
Paolo Bonzini9b095032013-02-22 17:36:28 +0100650 qemu_mutex_unlock_iothread();
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100651 qemu_savevm_state_begin(f, &params);
Paolo Bonzini9b095032013-02-22 17:36:28 +0100652 qemu_mutex_lock_iothread();
653
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100654 while (qemu_file_get_error(f) == 0) {
655 if (qemu_savevm_state_iterate(f) > 0) {
656 break;
657 }
658 }
aliguoria672b462008-11-11 21:33:36 +0000659
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100660 ret = qemu_file_get_error(f);
Juan Quintela39346382011-09-22 11:02:14 +0200661 if (ret == 0) {
Paolo Bonzini47c8c172013-02-22 17:36:13 +0100662 qemu_savevm_state_complete(f);
Juan Quintela624b9cc2011-10-05 01:02:52 +0200663 ret = qemu_file_get_error(f);
Juan Quintela39346382011-09-22 11:02:14 +0200664 }
Paolo Bonzini04943eb2013-02-22 17:36:10 +0100665 if (ret != 0) {
666 qemu_savevm_state_cancel();
667 }
aliguoria672b462008-11-11 21:33:36 +0000668 return ret;
669}
670
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000671static int qemu_save_device_state(QEMUFile *f)
672{
673 SaveStateEntry *se;
674
675 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
676 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
677
678 cpu_synchronize_all_states();
679
680 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
681 int len;
682
683 if (se->is_ram) {
684 continue;
685 }
Juan Quintela22ea40f2012-06-26 17:19:10 +0200686 if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000687 continue;
688 }
689
690 /* Section type */
691 qemu_put_byte(f, QEMU_VM_SECTION_FULL);
692 qemu_put_be32(f, se->section_id);
693
694 /* ID string */
695 len = strlen(se->idstr);
696 qemu_put_byte(f, len);
697 qemu_put_buffer(f, (uint8_t *)se->idstr, len);
698
699 qemu_put_be32(f, se->instance_id);
700 qemu_put_be32(f, se->version_id);
701
702 vmstate_save(f, se);
703 }
704
705 qemu_put_byte(f, QEMU_VM_EOF);
706
707 return qemu_file_get_error(f);
708}
709
aliguoria672b462008-11-11 21:33:36 +0000710static SaveStateEntry *find_se(const char *idstr, int instance_id)
711{
712 SaveStateEntry *se;
713
Blue Swirl72cf2d42009-09-12 07:36:22 +0000714 QTAILQ_FOREACH(se, &savevm_handlers, entry) {
aliguoria672b462008-11-11 21:33:36 +0000715 if (!strcmp(se->idstr, idstr) &&
Jan Kiszka4d2ffa02010-05-15 13:32:40 +0200716 (instance_id == se->instance_id ||
717 instance_id == se->alias_id))
aliguoria672b462008-11-11 21:33:36 +0000718 return se;
Alex Williamson7685ee62010-06-25 11:09:14 -0600719 /* Migrating from an older version? */
720 if (strstr(se->idstr, idstr) && se->compat) {
721 if (!strcmp(se->compat->idstr, idstr) &&
722 (instance_id == se->compat->instance_id ||
723 instance_id == se->alias_id))
724 return se;
725 }
aliguoria672b462008-11-11 21:33:36 +0000726 }
727 return NULL;
728}
729
730typedef struct LoadStateEntry {
Blue Swirl72cf2d42009-09-12 07:36:22 +0000731 QLIST_ENTRY(LoadStateEntry) entry;
aliguoria672b462008-11-11 21:33:36 +0000732 SaveStateEntry *se;
733 int section_id;
734 int version_id;
aliguoria672b462008-11-11 21:33:36 +0000735} LoadStateEntry;
736
aliguoria672b462008-11-11 21:33:36 +0000737int qemu_loadvm_state(QEMUFile *f)
738{
Blue Swirl72cf2d42009-09-12 07:36:22 +0000739 QLIST_HEAD(, LoadStateEntry) loadvm_handlers =
740 QLIST_HEAD_INITIALIZER(loadvm_handlers);
Juan Quintelaf4dbb8d2009-09-01 02:12:33 +0200741 LoadStateEntry *le, *new_le;
aliguoria672b462008-11-11 21:33:36 +0000742 uint8_t section_type;
743 unsigned int v;
744 int ret;
745
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200746 if (qemu_savevm_state_blocked(NULL)) {
Alex Williamsondc912122011-01-11 14:39:43 -0700747 return -EINVAL;
748 }
749
aliguoria672b462008-11-11 21:33:36 +0000750 v = qemu_get_be32(f);
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200751 if (v != QEMU_VM_FILE_MAGIC) {
aliguoria672b462008-11-11 21:33:36 +0000752 return -EINVAL;
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200753 }
aliguoria672b462008-11-11 21:33:36 +0000754
755 v = qemu_get_be32(f);
Juan Quintelabbfe1402009-09-10 03:04:24 +0200756 if (v == QEMU_VM_FILE_VERSION_COMPAT) {
757 fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
758 return -ENOTSUP;
759 }
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200760 if (v != QEMU_VM_FILE_VERSION) {
aliguoria672b462008-11-11 21:33:36 +0000761 return -ENOTSUP;
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200762 }
aliguoria672b462008-11-11 21:33:36 +0000763
764 while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
765 uint32_t instance_id, version_id, section_id;
aliguoria672b462008-11-11 21:33:36 +0000766 SaveStateEntry *se;
767 char idstr[257];
768 int len;
769
770 switch (section_type) {
771 case QEMU_VM_SECTION_START:
772 case QEMU_VM_SECTION_FULL:
773 /* Read section start */
774 section_id = qemu_get_be32(f);
775 len = qemu_get_byte(f);
776 qemu_get_buffer(f, (uint8_t *)idstr, len);
777 idstr[len] = 0;
778 instance_id = qemu_get_be32(f);
779 version_id = qemu_get_be32(f);
780
781 /* Find savevm section */
782 se = find_se(idstr, instance_id);
783 if (se == NULL) {
784 fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
785 ret = -EINVAL;
786 goto out;
787 }
788
789 /* Validate version */
790 if (version_id > se->version_id) {
791 fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
792 version_id, idstr, se->version_id);
793 ret = -EINVAL;
794 goto out;
795 }
796
797 /* Add entry */
Anthony Liguori7267c092011-08-20 22:09:37 -0500798 le = g_malloc0(sizeof(*le));
aliguoria672b462008-11-11 21:33:36 +0000799
800 le->se = se;
801 le->section_id = section_id;
802 le->version_id = version_id;
Blue Swirl72cf2d42009-09-12 07:36:22 +0000803 QLIST_INSERT_HEAD(&loadvm_handlers, le, entry);
aliguoria672b462008-11-11 21:33:36 +0000804
Juan Quintela4082be42009-08-20 19:42:24 +0200805 ret = vmstate_load(f, le->se, le->version_id);
Juan Quintelab5a22e42009-08-20 19:42:23 +0200806 if (ret < 0) {
807 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
808 instance_id, idstr);
809 goto out;
810 }
aliguoria672b462008-11-11 21:33:36 +0000811 break;
812 case QEMU_VM_SECTION_PART:
813 case QEMU_VM_SECTION_END:
814 section_id = qemu_get_be32(f);
815
Blue Swirl72cf2d42009-09-12 07:36:22 +0000816 QLIST_FOREACH(le, &loadvm_handlers, entry) {
Juan Quintelaf4dbb8d2009-09-01 02:12:33 +0200817 if (le->section_id == section_id) {
818 break;
819 }
820 }
aliguoria672b462008-11-11 21:33:36 +0000821 if (le == NULL) {
822 fprintf(stderr, "Unknown savevm section %d\n", section_id);
823 ret = -EINVAL;
824 goto out;
825 }
826
Juan Quintela4082be42009-08-20 19:42:24 +0200827 ret = vmstate_load(f, le->se, le->version_id);
Juan Quintelab5a22e42009-08-20 19:42:23 +0200828 if (ret < 0) {
829 fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
830 section_id);
831 goto out;
832 }
aliguoria672b462008-11-11 21:33:36 +0000833 break;
834 default:
835 fprintf(stderr, "Unknown savevm section type %d\n", section_type);
836 ret = -EINVAL;
837 goto out;
838 }
839 }
840
Jan Kiszkaea375f92010-03-01 19:10:30 +0100841 cpu_synchronize_all_post_init();
842
aliguoria672b462008-11-11 21:33:36 +0000843 ret = 0;
844
845out:
Blue Swirl72cf2d42009-09-12 07:36:22 +0000846 QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) {
847 QLIST_REMOVE(le, entry);
Anthony Liguori7267c092011-08-20 22:09:37 -0500848 g_free(le);
aliguoria672b462008-11-11 21:33:36 +0000849 }
850
Juan Quintela42802d42011-10-05 01:14:46 +0200851 if (ret == 0) {
852 ret = qemu_file_get_error(f);
Juan Quintela624b9cc2011-10-05 01:02:52 +0200853 }
aliguoria672b462008-11-11 21:33:36 +0000854
855 return ret;
856}
857
Stefan Hajnoczi29d78272013-05-25 11:09:42 +0800858static BlockDriverState *find_vmstate_bs(void)
859{
860 BlockDriverState *bs = NULL;
861 while ((bs = bdrv_next(bs))) {
862 if (bdrv_can_snapshot(bs)) {
863 return bs;
864 }
865 }
866 return NULL;
867}
868
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100869/*
870 * Deletes snapshots of a given name in all opened images.
871 */
872static int del_existing_snapshots(Monitor *mon, const char *name)
873{
874 BlockDriverState *bs;
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100875 QEMUSnapshotInfo sn1, *snapshot = &sn1;
Wenchao Xiaa89d89d2013-09-11 14:04:33 +0800876 Error *err = NULL;
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100877
Markus Armbrusterdbc13592010-06-02 18:55:21 +0200878 bs = NULL;
879 while ((bs = bdrv_next(bs))) {
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100880 if (bdrv_can_snapshot(bs) &&
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200881 bdrv_snapshot_find(bs, snapshot, name) >= 0) {
Wenchao Xiaa89d89d2013-09-11 14:04:33 +0800882 bdrv_snapshot_delete_by_id_or_name(bs, name, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100883 if (err) {
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100884 monitor_printf(mon,
Wenchao Xiaa89d89d2013-09-11 14:04:33 +0800885 "Error while deleting snapshot on device '%s':"
886 " %s\n",
887 bdrv_get_device_name(bs),
888 error_get_pretty(err));
889 error_free(err);
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100890 return -1;
891 }
892 }
893 }
894
895 return 0;
896}
897
Luiz Capitulinod54908a2009-08-28 15:27:13 -0300898void do_savevm(Monitor *mon, const QDict *qdict)
aliguoria672b462008-11-11 21:33:36 +0000899{
900 BlockDriverState *bs, *bs1;
901 QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1;
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100902 int ret;
aliguoria672b462008-11-11 21:33:36 +0000903 QEMUFile *f;
904 int saved_vm_running;
Kevin Wolfc2c9a462011-11-16 11:35:54 +0100905 uint64_t vm_state_size;
Stefan Weil68b891e2013-01-07 22:20:27 +0100906 qemu_timeval tv;
Miguel Di Ciurcio Filho7d631a12010-08-04 14:55:49 -0300907 struct tm tm;
Luiz Capitulinod54908a2009-08-28 15:27:13 -0300908 const char *name = qdict_get_try_str(qdict, "name");
aliguoria672b462008-11-11 21:33:36 +0000909
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -0300910 /* Verify if there is a device that doesn't support snapshots and is writable */
Markus Armbrusterdbc13592010-06-02 18:55:21 +0200911 bs = NULL;
912 while ((bs = bdrv_next(bs))) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -0300913
Markus Armbruster07b70bf2011-08-03 15:08:11 +0200914 if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -0300915 continue;
916 }
917
918 if (!bdrv_can_snapshot(bs)) {
919 monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
920 bdrv_get_device_name(bs));
921 return;
922 }
923 }
924
Stefan Hajnoczi29d78272013-05-25 11:09:42 +0800925 bs = find_vmstate_bs();
aliguoria672b462008-11-11 21:33:36 +0000926 if (!bs) {
aliguori376253e2009-03-05 23:01:23 +0000927 monitor_printf(mon, "No block device can accept snapshots\n");
aliguoria672b462008-11-11 21:33:36 +0000928 return;
929 }
aliguoria672b462008-11-11 21:33:36 +0000930
Luiz Capitulino13548692011-07-29 15:36:43 -0300931 saved_vm_running = runstate_is_running();
Luiz Capitulino0461d5a2011-09-30 14:45:27 -0300932 vm_stop(RUN_STATE_SAVE_VM);
aliguoria672b462008-11-11 21:33:36 +0000933
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100934 memset(sn, 0, sizeof(*sn));
aliguoria672b462008-11-11 21:33:36 +0000935
936 /* fill auxiliary fields */
Stefan Weil68b891e2013-01-07 22:20:27 +0100937 qemu_gettimeofday(&tv);
aliguoria672b462008-11-11 21:33:36 +0000938 sn->date_sec = tv.tv_sec;
939 sn->date_nsec = tv.tv_usec * 1000;
Alex Blighbc72ad62013-08-21 16:03:08 +0100940 sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
aliguoria672b462008-11-11 21:33:36 +0000941
Miguel Di Ciurcio Filho7d631a12010-08-04 14:55:49 -0300942 if (name) {
943 ret = bdrv_snapshot_find(bs, old_sn, name);
944 if (ret >= 0) {
945 pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
946 pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
947 } else {
948 pstrcpy(sn->name, sizeof(sn->name), name);
949 }
950 } else {
Blue Swirld7d9b522010-09-09 19:13:04 +0000951 /* cast below needed for OpenBSD where tv_sec is still 'long' */
952 localtime_r((const time_t *)&tv.tv_sec, &tm);
Miguel Di Ciurcio Filho7d631a12010-08-04 14:55:49 -0300953 strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm);
Miguel Di Ciurcio Filho7d631a12010-08-04 14:55:49 -0300954 }
955
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100956 /* Delete old snapshots of the same name */
Marcelo Tosattif139a412010-01-20 14:26:34 -0200957 if (name && del_existing_snapshots(mon, name) < 0) {
Kevin Wolfcb499fb2009-11-03 17:34:37 +0100958 goto the_end;
959 }
960
aliguoria672b462008-11-11 21:33:36 +0000961 /* save the VM state */
Christoph Hellwig45566e92009-07-10 23:11:57 +0200962 f = qemu_fopen_bdrv(bs, 1);
aliguoria672b462008-11-11 21:33:36 +0000963 if (!f) {
aliguori376253e2009-03-05 23:01:23 +0000964 monitor_printf(mon, "Could not open VM state file\n");
aliguoria672b462008-11-11 21:33:36 +0000965 goto the_end;
966 }
Luiz Capitulinoe1c37d02011-12-05 14:48:01 -0200967 ret = qemu_savevm_state(f);
aliguori2d22b182008-12-11 21:06:49 +0000968 vm_state_size = qemu_ftell(f);
aliguoria672b462008-11-11 21:33:36 +0000969 qemu_fclose(f);
970 if (ret < 0) {
aliguori376253e2009-03-05 23:01:23 +0000971 monitor_printf(mon, "Error %d while writing VM\n", ret);
aliguoria672b462008-11-11 21:33:36 +0000972 goto the_end;
973 }
974
975 /* create the snapshots */
976
Markus Armbrusterdbc13592010-06-02 18:55:21 +0200977 bs1 = NULL;
978 while ((bs1 = bdrv_next(bs1))) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -0300979 if (bdrv_can_snapshot(bs1)) {
aliguori2d22b182008-12-11 21:06:49 +0000980 /* Write VM state size only to the image that contains the state */
981 sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
aliguoria672b462008-11-11 21:33:36 +0000982 ret = bdrv_snapshot_create(bs1, sn);
983 if (ret < 0) {
aliguori376253e2009-03-05 23:01:23 +0000984 monitor_printf(mon, "Error while creating snapshot on '%s'\n",
985 bdrv_get_device_name(bs1));
aliguoria672b462008-11-11 21:33:36 +0000986 }
987 }
988 }
989
990 the_end:
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200991 if (saved_vm_running) {
aliguoria672b462008-11-11 21:33:36 +0000992 vm_start();
Eduardo Habkost38ff78d2013-11-28 12:01:13 -0200993 }
aliguoria672b462008-11-11 21:33:36 +0000994}
995
Stefano Stabellinia7ae8352012-01-25 12:24:51 +0000996void qmp_xen_save_devices_state(const char *filename, Error **errp)
997{
998 QEMUFile *f;
999 int saved_vm_running;
1000 int ret;
1001
1002 saved_vm_running = runstate_is_running();
1003 vm_stop(RUN_STATE_SAVE_VM);
1004
1005 f = qemu_fopen(filename, "wb");
1006 if (!f) {
Luiz Capitulino1befce92013-06-07 14:36:58 -04001007 error_setg_file_open(errp, errno, filename);
Stefano Stabellinia7ae8352012-01-25 12:24:51 +00001008 goto the_end;
1009 }
1010 ret = qemu_save_device_state(f);
1011 qemu_fclose(f);
1012 if (ret < 0) {
1013 error_set(errp, QERR_IO_ERROR);
1014 }
1015
1016 the_end:
Eduardo Habkost38ff78d2013-11-28 12:01:13 -02001017 if (saved_vm_running) {
Stefano Stabellinia7ae8352012-01-25 12:24:51 +00001018 vm_start();
Eduardo Habkost38ff78d2013-11-28 12:01:13 -02001019 }
Stefano Stabellinia7ae8352012-01-25 12:24:51 +00001020}
1021
Markus Armbruster03cd4652010-02-17 16:24:10 +01001022int load_vmstate(const char *name)
aliguoria672b462008-11-11 21:33:36 +00001023{
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001024 BlockDriverState *bs, *bs_vm_state;
aliguori2d22b182008-12-11 21:06:49 +00001025 QEMUSnapshotInfo sn;
aliguoria672b462008-11-11 21:33:36 +00001026 QEMUFile *f;
Gerd Hoffmann751c6a12009-07-22 16:42:57 +02001027 int ret;
aliguoria672b462008-11-11 21:33:36 +00001028
Stefan Hajnoczi29d78272013-05-25 11:09:42 +08001029 bs_vm_state = find_vmstate_bs();
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001030 if (!bs_vm_state) {
1031 error_report("No block device supports snapshots");
1032 return -ENOTSUP;
1033 }
1034
1035 /* Don't even try to load empty VM states */
1036 ret = bdrv_snapshot_find(bs_vm_state, &sn, name);
1037 if (ret < 0) {
1038 return ret;
1039 } else if (sn.vm_state_size == 0) {
Kevin Wolfe11480d2011-03-01 10:48:12 +01001040 error_report("This is a disk-only snapshot. Revert to it offline "
1041 "using qemu-img.");
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001042 return -EINVAL;
1043 }
1044
1045 /* Verify if there is any device that doesn't support snapshots and is
1046 writable and check if the requested snapshot is available too. */
Markus Armbrusterdbc13592010-06-02 18:55:21 +02001047 bs = NULL;
1048 while ((bs = bdrv_next(bs))) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -03001049
Markus Armbruster07b70bf2011-08-03 15:08:11 +02001050 if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -03001051 continue;
1052 }
1053
1054 if (!bdrv_can_snapshot(bs)) {
1055 error_report("Device '%s' is writable but does not support snapshots.",
1056 bdrv_get_device_name(bs));
1057 return -ENOTSUP;
1058 }
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -03001059
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001060 ret = bdrv_snapshot_find(bs, &sn, name);
1061 if (ret < 0) {
1062 error_report("Device '%s' does not have the requested snapshot '%s'",
1063 bdrv_get_device_name(bs), name);
1064 return ret;
1065 }
aliguoria672b462008-11-11 21:33:36 +00001066 }
1067
1068 /* Flush all IO requests so they don't interfere with the new state. */
Stefan Hajnoczi922453b2011-11-30 12:23:43 +00001069 bdrv_drain_all();
aliguoria672b462008-11-11 21:33:36 +00001070
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001071 bs = NULL;
1072 while ((bs = bdrv_next(bs))) {
1073 if (bdrv_can_snapshot(bs)) {
1074 ret = bdrv_snapshot_goto(bs, name);
aliguoria672b462008-11-11 21:33:36 +00001075 if (ret < 0) {
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001076 error_report("Error %d while activating snapshot '%s' on '%s'",
1077 ret, name, bdrv_get_device_name(bs));
1078 return ret;
aliguoria672b462008-11-11 21:33:36 +00001079 }
1080 }
1081 }
1082
aliguoria672b462008-11-11 21:33:36 +00001083 /* restore the VM state */
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001084 f = qemu_fopen_bdrv(bs_vm_state, 0);
aliguoria672b462008-11-11 21:33:36 +00001085 if (!f) {
Markus Armbruster1ecda022010-02-18 17:25:24 +01001086 error_report("Could not open VM state file");
Juan Quintela05f24012009-08-20 19:42:22 +02001087 return -EINVAL;
aliguoria672b462008-11-11 21:33:36 +00001088 }
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001089
Jan Kiszka5a8a49d2011-06-14 18:29:45 +02001090 qemu_system_reset(VMRESET_SILENT);
aliguoria672b462008-11-11 21:33:36 +00001091 ret = qemu_loadvm_state(f);
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001092
aliguoria672b462008-11-11 21:33:36 +00001093 qemu_fclose(f);
1094 if (ret < 0) {
Markus Armbruster1ecda022010-02-18 17:25:24 +01001095 error_report("Error %d while loading VM state", ret);
Juan Quintela05f24012009-08-20 19:42:22 +02001096 return ret;
aliguoria672b462008-11-11 21:33:36 +00001097 }
Miguel Di Ciurcio Filhof0aa7a82010-07-19 15:25:01 -03001098
Juan Quintela05f24012009-08-20 19:42:22 +02001099 return 0;
Juan Quintela7b630342009-08-20 19:42:20 +02001100}
1101
Luiz Capitulinod54908a2009-08-28 15:27:13 -03001102void do_delvm(Monitor *mon, const QDict *qdict)
aliguoria672b462008-11-11 21:33:36 +00001103{
1104 BlockDriverState *bs, *bs1;
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08001105 Error *err = NULL;
Luiz Capitulinod54908a2009-08-28 15:27:13 -03001106 const char *name = qdict_get_str(qdict, "name");
aliguoria672b462008-11-11 21:33:36 +00001107
Stefan Hajnoczi29d78272013-05-25 11:09:42 +08001108 bs = find_vmstate_bs();
aliguoria672b462008-11-11 21:33:36 +00001109 if (!bs) {
aliguori376253e2009-03-05 23:01:23 +00001110 monitor_printf(mon, "No block device supports snapshots\n");
aliguoria672b462008-11-11 21:33:36 +00001111 return;
1112 }
1113
Markus Armbrusterdbc13592010-06-02 18:55:21 +02001114 bs1 = NULL;
1115 while ((bs1 = bdrv_next(bs1))) {
Miguel Di Ciurcio Filhofeeee5a2010-06-08 10:40:55 -03001116 if (bdrv_can_snapshot(bs1)) {
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08001117 bdrv_snapshot_delete_by_id_or_name(bs, name, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001118 if (err) {
Wenchao Xiaa89d89d2013-09-11 14:04:33 +08001119 monitor_printf(mon,
1120 "Error while deleting snapshot on device '%s':"
1121 " %s\n",
1122 bdrv_get_device_name(bs),
1123 error_get_pretty(err));
1124 error_free(err);
aliguoria672b462008-11-11 21:33:36 +00001125 }
1126 }
1127 }
1128}
1129
Wenchao Xia84f2d0e2013-01-14 14:06:25 +08001130void do_info_snapshots(Monitor *mon, const QDict *qdict)
aliguoria672b462008-11-11 21:33:36 +00001131{
1132 BlockDriverState *bs, *bs1;
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001133 QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s;
1134 int nb_sns, i, ret, available;
1135 int total;
1136 int *available_snapshots;
aliguoria672b462008-11-11 21:33:36 +00001137
Stefan Hajnoczi29d78272013-05-25 11:09:42 +08001138 bs = find_vmstate_bs();
aliguoria672b462008-11-11 21:33:36 +00001139 if (!bs) {
aliguori376253e2009-03-05 23:01:23 +00001140 monitor_printf(mon, "No available block device supports snapshots\n");
aliguoria672b462008-11-11 21:33:36 +00001141 return;
1142 }
aliguoria672b462008-11-11 21:33:36 +00001143
1144 nb_sns = bdrv_snapshot_list(bs, &sn_tab);
1145 if (nb_sns < 0) {
aliguori376253e2009-03-05 23:01:23 +00001146 monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
aliguoria672b462008-11-11 21:33:36 +00001147 return;
1148 }
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001149
1150 if (nb_sns == 0) {
1151 monitor_printf(mon, "There is no snapshot available.\n");
1152 return;
aliguoria672b462008-11-11 21:33:36 +00001153 }
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001154
Anthony Liguori7267c092011-08-20 22:09:37 -05001155 available_snapshots = g_malloc0(sizeof(int) * nb_sns);
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001156 total = 0;
1157 for (i = 0; i < nb_sns; i++) {
1158 sn = &sn_tab[i];
1159 available = 1;
1160 bs1 = NULL;
1161
1162 while ((bs1 = bdrv_next(bs1))) {
1163 if (bdrv_can_snapshot(bs1) && bs1 != bs) {
1164 ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str);
1165 if (ret < 0) {
1166 available = 0;
1167 break;
1168 }
1169 }
1170 }
1171
1172 if (available) {
1173 available_snapshots[total] = i;
1174 total++;
1175 }
1176 }
1177
1178 if (total > 0) {
Wenchao Xia5b917042013-05-25 11:09:45 +08001179 bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL);
1180 monitor_printf(mon, "\n");
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001181 for (i = 0; i < total; i++) {
1182 sn = &sn_tab[available_snapshots[i]];
Wenchao Xia5b917042013-05-25 11:09:45 +08001183 bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn);
1184 monitor_printf(mon, "\n");
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001185 }
1186 } else {
1187 monitor_printf(mon, "There is no suitable snapshot available\n");
1188 }
1189
Anthony Liguori7267c092011-08-20 22:09:37 -05001190 g_free(sn_tab);
1191 g_free(available_snapshots);
Miguel Di Ciurcio Filhof9209912010-08-04 14:55:48 -03001192
aliguoria672b462008-11-11 21:33:36 +00001193}
Avi Kivityc5705a72011-12-20 15:59:12 +02001194
1195void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)
1196{
Avi Kivity1ddde082012-01-08 13:18:19 +02001197 qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK,
Avi Kivityc5705a72011-12-20 15:59:12 +02001198 memory_region_name(mr), dev);
1199}
1200
1201void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
1202{
1203 /* Nothing do to while the implementation is in RAMBlock */
1204}
1205
1206void vmstate_register_ram_global(MemoryRegion *mr)
1207{
1208 vmstate_register_ram(mr, NULL);
1209}