linux-kernel - [PATCH v12 rebased 2/8] start vm after resetting it

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Message-Id: <19fae3171e31ae90c208895d90ad912291936794.1358920534.git.hutao@cn.fujitsu.com>
Date:	Wed, 23 Jan 2013 15:19:23 +0800
From:	Hu Tao <hutao@...fujitsu.com>
To:	kvm list <kvm@...r.kernel.org>, qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Gleb Natapov <gleb@...hat.com>,
	Blue Swirl <blauwirbel@...il.com>,
	Eric Blake <eblake@...hat.com>,
	Andrew Jones <drjones@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Sasha Levin <levinsasha928@...il.com>,
	Luiz Capitulino <lcapitulino@...hat.com>
Cc:	Wen Congyang <wency@...fujitsu.com>
Subject: [PATCH v12 rebased 2/8] start vm after resetting it

From: Wen Congyang <wency@...fujitsu.com>

The guest should run after resetting it, but it does not run if its
old state is RUN_STATE_INTERNAL_ERROR or RUN_STATE_PAUSED.

We don't set runstate to RUN_STATE_PAUSED when resetting the guest,
so the runstate will be changed from RUN_STATE_INTERNAL_ERROR or
RUN_STATE_PAUSED to RUN_STATE_RUNNING(not RUN_STATE_PAUSED).

Signed-off-by: Wen Congyang <wency@...fujitsu.com>
---
 include/block/block.h | 2 ++
 qmp.c                 | 2 +-
 vl.c                  | 7 ++++---
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/include/block/block.h b/include/block/block.h
index ffd1936..5e82ccb 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -366,6 +366,8 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs);
 void bdrv_set_in_use(BlockDriverState *bs, int in_use);
 int bdrv_in_use(BlockDriverState *bs);
 
+void iostatus_bdrv_it(void *opaque, BlockDriverState *bs);
+
 #ifdef CONFIG_LINUX_AIO
 int raw_get_aio_fd(BlockDriverState *bs);
 #else
diff --git a/qmp.c b/qmp.c
index 55b056b..5f1bed1 100644
--- a/qmp.c
+++ b/qmp.c
@@ -130,7 +130,7 @@ SpiceInfo *qmp_query_spice(Error **errp)
 };
 #endif
 
-static void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
+void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
 {
     bdrv_iostatus_reset(bs);
 }
diff --git a/vl.c b/vl.c
index b0bcf1e..1d2edaa 100644
--- a/vl.c
+++ b/vl.c
@@ -534,7 +534,7 @@ static const RunStateTransition runstate_transitions_def[] = {
     { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
     { RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
 
-    { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
+    { RUN_STATE_INTERNAL_ERROR, RUN_STATE_RUNNING },
     { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
 
     { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
@@ -569,7 +569,7 @@ static const RunStateTransition runstate_transitions_def[] = {
 
     { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
 
-    { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
+    { RUN_STATE_SHUTDOWN, RUN_STATE_RUNNING },
     { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
 
     { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
@@ -1951,7 +1951,8 @@ static bool main_loop_should_exit(void)
         resume_all_vcpus();
         if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
             runstate_check(RUN_STATE_SHUTDOWN)) {
-            runstate_set(RUN_STATE_PAUSED);
+            bdrv_iterate(iostatus_bdrv_it, NULL);
+            vm_start();
         }
     }
     if (qemu_wakeup_requested()) {
-- 
1.8.0.1.240.ge8a1f5a

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