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replay: flush rr queue before loading the vmstate

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Non-empty record/replay queue prevents saving and loading the VM state,
because it includes pending bottom halves and block coroutines.
But when the new VM state is loaded, we don't have to preserve the consistency
of the current state anymore. Therefore this patch just flushes the queue
allowing the coroutines to finish and removes checking for empty rr queue
for load_snapshot function.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <160174521762.12451.15752448887893855757.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2020-10-03 20:13:37 +03:00 • committed by Paolo Bonzini
parent f6baed3d14
commit f9a9fb6516
4 changed files with 12 additions and 8 deletions
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2
include/sysemu/replay.h
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@ -149,6 +149,8 @@ void replay_disable_events(void);
void replay_enable_events(void);
/*! Returns true when saving events is enabled */
bool replay_events_enabled(void);
/* Flushes events queue */
void replay_flush_events(void);
/*! Adds bottom half event to the queue */
void replay_bh_schedule_event(QEMUBH *bh);
/* Adds oneshot bottom half event to the queue */