[Qemu-devel] [PATCH] timer/aspeed: fix vmstate version id

["Cédric Le Goater" <clg@kaod.org>]

commit 1d3e65aa7ac5 ("hw/timer: Add value matching support to
aspeed_timer") increased the vmstate version of the timers array but
doing so, it broke migration. To fix, we also need to change the
vmstate version of the aspeed timer controller model.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---

 To test on a 'palmetto-bmc' board, download the latest built OpenBMC
 flash image :

   wget https://openpower.xyz/job/openbmc-build/distro=ubuntu,target=palmetto/lastSuccessfulBuild/artifact/deploy/images/palmetto/flash-palmetto

 start two instances of QEMU with :

   qemu-system-arm -m 512 -M palmetto-bmc -drive file=./flash-palmetto,format=raw,if=mtd -serial mon:stdio -nographic -nodefaults

 and :
 
   qemu-system-arm -m 512 -M palmetto-bmc -drive file=./flash-palmetto,format=raw,if=mtd -serial mon:stdio -nographic -nodefaults -incoming tcp::1234

 then, run migrate from the monitor:
 
   (qemu) migrate tcp:localhost:1234

 hw/timer/aspeed_timer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/timer/aspeed_timer.c b/hw/timer/aspeed_timer.c
index 50acbf530a3a..7df19bd9df91 100644
--- a/hw/timer/aspeed_timer.c
+++ b/hw/timer/aspeed_timer.c
@@ -498,8 +498,8 @@ static const VMStateDescription vmstate_aspeed_timer = {
 
 static const VMStateDescription vmstate_aspeed_timer_state = {
     .name = "aspeed.timerctrl",
-    .version_id = 1,
-    .minimum_version_id = 1,
+    .version_id = 2,
+    .minimum_version_id = 2,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32(ctrl, AspeedTimerCtrlState),
         VMSTATE_UINT32(ctrl2, AspeedTimerCtrlState),
-- 
2.13.6