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-rw-r--r--include/sysemu/sysemu.h2
-rw-r--r--migration/migration.c2
-rw-r--r--migration/savevm.c13
3 files changed, 13 insertions, 4 deletions
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 76a0b36497..05d1982bda 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -109,7 +109,7 @@ bool qemu_savevm_state_blocked(Error **errp);
void qemu_savevm_state_begin(QEMUFile *f,
const MigrationParams *params);
void qemu_savevm_state_header(QEMUFile *f);
-int qemu_savevm_state_iterate(QEMUFile *f);
+int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
void qemu_savevm_state_cleanup(void);
void qemu_savevm_state_complete_postcopy(QEMUFile *f);
void qemu_savevm_state_complete_precopy(QEMUFile *f);
diff --git a/migration/migration.c b/migration/migration.c
index 7d64cd3240..38d64ea58b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1628,7 +1628,7 @@ static void *migration_thread(void *opaque)
continue;
}
/* Just another iteration step */
- qemu_savevm_state_iterate(s->file);
+ qemu_savevm_state_iterate(s->file, entered_postcopy);
} else {
trace_migration_thread_low_pending(pending_size);
migration_completion(s, current_active_state,
diff --git a/migration/savevm.c b/migration/savevm.c
index a7210a22b4..308b7d1812 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -931,7 +931,7 @@ void qemu_savevm_state_begin(QEMUFile *f,
* 0 : We haven't finished, caller have to go again
* 1 : We have finished, we can go to complete phase
*/
-int qemu_savevm_state_iterate(QEMUFile *f)
+int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy)
{
SaveStateEntry *se;
int ret = 1;
@@ -946,6 +946,15 @@ int qemu_savevm_state_iterate(QEMUFile *f)
continue;
}
}
+ /*
+ * In the postcopy phase, any device that doesn't know how to
+ * do postcopy should have saved it's state in the _complete
+ * call that's already run, it might get confused if we call
+ * iterate afterwards.
+ */
+ if (postcopy && !se->ops->save_live_complete_postcopy) {
+ continue;
+ }
if (qemu_file_rate_limit(f)) {
return 0;
}
@@ -1160,7 +1169,7 @@ static int qemu_savevm_state(QEMUFile *f, Error **errp)
qemu_mutex_lock_iothread();
while (qemu_file_get_error(f) == 0) {
- if (qemu_savevm_state_iterate(f) > 0) {
+ if (qemu_savevm_state_iterate(f, false) > 0) {
break;
}
}