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replay: fix save/load vm for non-empty queue

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This patch does not allows saving/loading vmstate when
replay events queue is not empty. There is no reliable
way to save events queue, because it describes internal
coroutine state. Therefore saving and loading operations
should be deferred to another record/replay step.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20180227095214.1060.32939.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
This commit is contained in:
Pavel Dovgalyuk 2018-02-27 12:52:14 +03:00 • committed by Paolo Bonzini
parent 1652e0c30f
commit 377b21ccea
3 changed files with 22 additions and 0 deletions
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3
include/sysemu/replay.h
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@ -166,5 +166,8 @@ void replay_audio_in(int *recorded, void *samples, int *wpos, int size);
/*! Called at the start of execution.
Loads or saves initial vmstate depending on execution mode. */
void replay_vmstate_init(void);
/*! Called to ensure that replay state is consistent and VM snapshot
can be created */
bool replay_can_snapshot(void);
#endif