vl: change runstate only if new state is different from current state
commit07a3a482c3d10c2b83e5a3052428db502578179a
authorLi Zhijian <lizhijian@cn.fujitsu.com>
Thu, 14 Apr 2016 03:25:52 +0000 (14 11:25 +0800)
committerMichael Roth <mdroth@linux.vnet.ibm.com>
Thu, 4 Aug 2016 21:01:36 +0000 (4 16:01 -0500)
treed39853b69d6f060caa12cd5507910b0335c7fe99
parent5b6c12e2456ed97452c237343a64b2a01aa7a73a
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>
(cherry picked from commit e92a2d9cb3d8f589c9fe5d2eacc83d8dddea0e16)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
vl.c