vl: change runstate only if new state is different from current state
commite92a2d9cb3d8f589c9fe5d2eacc83d8dddea0e16
authorLi Zhijian <lizhijian@cn.fujitsu.com>
Thu, 14 Apr 2016 03:25:52 +0000 (14 11:25 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Mon, 23 May 2016 14:53:44 +0000 (23 16:53 +0200)
tree7c9d9244d055029de7b8b3bd6dae9a269960daff
parented1263c363c970a7ad5226b8f41dbbf0c92c1e17
vl: change runstate only if new state is different from current state

Previously, qemu will abort at following scenario:
(qemu) stop
(qemu) system_reset
(qemu) system_reset
(qemu) 2016-04-13T20:54:38.979158Z qemu-system-x86_64: invalid runstate transition: 'prelaunch' -> 'prelaunch'

Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1460604352-18630-1-git-send-email-lizhijian@cn.fujitsu.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
vl.c