split do_loadvm() into do_loadvm() and load_vmstate()

do_loadvm() is now called from the monitor.
load_vmstate() is called by do_loadvm() and when -loadvm command line is used.
Command line don't have to play games with vmstop()/vmstart()

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

3 files changed, 15 insertions, 10 deletions

diff --git a/savevm.c b/savevm.c
index 4575653..95947a9 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1174,14 +1174,13 @@ void do_savevm(Monitor *mon, const char *name)
         vm_start();
 }
 
-void do_loadvm(Monitor *mon, const char *name)
+void load_vmstate(Monitor *mon, const char *name)
 {
     DriveInfo *dinfo;
     BlockDriverState *bs, *bs1;
     QEMUSnapshotInfo sn;
     QEMUFile *f;
     int ret;
-    int saved_vm_running;
 
     bs = get_bs_snapshots();
     if (!bs) {
@@ -1192,9 +1191,6 @@ void do_loadvm(Monitor *mon, const char *name)
     /* Flush all IO requests so they don't interfere with the new state.  */
     qemu_aio_flush();
 
-    saved_vm_running = vm_running;
-    vm_stop(0);
-
     TAILQ_FOREACH(dinfo, &drives, next) {
         bs1 = dinfo->bdrv;
         if (bdrv_has_snapshot(bs1)) {
@@ -1220,7 +1216,7 @@ void do_loadvm(Monitor *mon, const char *name)
                 }
                 /* fatal on snapshot block device */
                 if (bs == bs1)
-                    goto the_end;
+                    return;
             }
         }
     }
@@ -1228,20 +1224,28 @@ void do_loadvm(Monitor *mon, const char *name)
     /* Don't even try to load empty VM states */
     ret = bdrv_snapshot_find(bs, &sn, name);
     if ((ret >= 0) && (sn.vm_state_size == 0))
-        goto the_end;
+        return;
 
     /* restore the VM state */
     f = qemu_fopen_bdrv(bs, 0);
     if (!f) {
         monitor_printf(mon, "Could not open VM state file\n");
-        goto the_end;
+        return;
     }
     ret = qemu_loadvm_state(f);
     qemu_fclose(f);
     if (ret < 0) {
         monitor_printf(mon, "Error %d while loading VM state\n", ret);
     }
- the_end:
+}
+
+void do_loadvm(Monitor *mon, const char *name)
+{
+    int saved_vm_running  = vm_running;
+
+    vm_stop(0);
+
+    load_vmstate(mon, name);
     if (saved_vm_running)
         vm_start();
 }
diff --git a/sysemu.h b/sysemu.h
index 1df0872..b2fc92e 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -52,6 +52,7 @@ void qemu_system_reset(void);
 
 void do_savevm(Monitor *mon, const char *name);
 void do_loadvm(Monitor *mon, const char *name);
+void load_vmstate(Monitor *mon, const char *name);
 void do_delvm(Monitor *mon, const char *name);
 void do_info_snapshots(Monitor *mon);
 
diff --git a/vl.c b/vl.c
index 3a247ae..95ed511 100644
--- a/vl.c
+++ b/vl.c
@@ -6031,7 +6031,7 @@ int main(int argc, char **argv, char **envp)
     }
 
     if (loadvm)
-        do_loadvm(cur_mon, loadvm);
+        load_vmstate(cur_mon, loadvm);
 
     if (incoming) {
         qemu_start_incoming_migration(incoming);