[PATCH 04/10] Fix the qemu crash when guest shutdown in COLO mode

[Zhang Chen]

From: "Rao, Lei" <lei....@intel.com>

In COLO mode, if the startup parameters of QEMU include "no-shutdown",
QEMU will crash when the guest shutdown. The root cause is when the
guest shutdown, the state of VM will switch COLO to SHUTDOWN. When do
checkpoint again, the state will be changed to COLO. But the state
switch is undefined in runstate_transitions_def, we should add it.
This patch fixes the following:
qemu-system-x86_64: invalid runstate transition: 'shutdown' -> 'colo'
Aborted

Signed-off-by: leirao <lei....@intel.com>
Signed-off-by: Zhang Chen <chen.zh...@intel.com>
Reviewed-by: Zhang Chen <chen.zh...@intel.com>
---
 softmmu/vl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/softmmu/vl.c b/softmmu/vl.c
index 5a11a62f78..bafe7c5b70 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -632,6 +632,7 @@ static const RunStateTransition runstate_transitions_def[] 
= {
     { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
     { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
     { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
+    { RUN_STATE_SHUTDOWN, RUN_STATE_COLO },
 
     { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
     { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
-- 
2.17.1