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Diffstat (limited to 'savevm.c')
-rw-r--r--savevm.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/savevm.c b/savevm.c
index 962175ac34..12fb20954f 100644
--- a/savevm.c
+++ b/savevm.c
@@ -84,6 +84,7 @@
#include "qemu-timer.h"
#include "cpus.h"
#include "memory.h"
+#include "qmp-commands.h"
#define SELF_ANNOUNCE_ROUNDS 5
@@ -1177,6 +1178,7 @@ typedef struct SaveStateEntry {
void *opaque;
CompatEntry *compat;
int no_migrate;
+ int is_ram;
} SaveStateEntry;
@@ -1241,6 +1243,10 @@ int register_savevm_live(DeviceState *dev,
se->opaque = opaque;
se->vmsd = NULL;
se->no_migrate = 0;
+ /* if this is a live_savem then set is_ram */
+ if (save_live_state != NULL) {
+ se->is_ram = 1;
+ }
if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
char *id = dev->parent_bus->info->get_dev_path(dev);
@@ -1728,6 +1734,45 @@ out:
return ret;
}
+static int qemu_save_device_state(QEMUFile *f)
+{
+ SaveStateEntry *se;
+
+ qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
+ qemu_put_be32(f, QEMU_VM_FILE_VERSION);
+
+ cpu_synchronize_all_states();
+
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
+ int len;
+
+ if (se->is_ram) {
+ continue;
+ }
+ if (se->save_state == NULL && se->vmsd == NULL) {
+ continue;
+ }
+
+ /* Section type */
+ qemu_put_byte(f, QEMU_VM_SECTION_FULL);
+ qemu_put_be32(f, se->section_id);
+
+ /* ID string */
+ len = strlen(se->idstr);
+ qemu_put_byte(f, len);
+ qemu_put_buffer(f, (uint8_t *)se->idstr, len);
+
+ qemu_put_be32(f, se->instance_id);
+ qemu_put_be32(f, se->version_id);
+
+ vmstate_save(f, se);
+ }
+
+ qemu_put_byte(f, QEMU_VM_EOF);
+
+ return qemu_file_get_error(f);
+}
+
static SaveStateEntry *find_se(const char *idstr, int instance_id)
{
SaveStateEntry *se;
@@ -2109,6 +2154,32 @@ void do_savevm(Monitor *mon, const QDict *qdict)
vm_start();
}
+void qmp_xen_save_devices_state(const char *filename, Error **errp)
+{
+ QEMUFile *f;
+ int saved_vm_running;
+ int ret;
+
+ saved_vm_running = runstate_is_running();
+ vm_stop(RUN_STATE_SAVE_VM);
+
+ f = qemu_fopen(filename, "wb");
+ if (!f) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, filename);
+ goto the_end;
+ }
+ ret = qemu_save_device_state(f);
+ qemu_fclose(f);
+ if (ret < 0) {
+ error_set(errp, QERR_IO_ERROR);
+ }
+
+ the_end:
+ if (saved_vm_running)
+ vm_start();
+ return;
+}
+
int load_vmstate(const char *name)
{
BlockDriverState *bs, *bs_vm_state;