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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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4
replay/replay-events.c
View file

@ -77,6 +77,10 @@ bool replay_has_events(void)
void replay_flush_events(void)
{
if (replay_mode == REPLAY_MODE_NONE) {
return;
}
g_assert(replay_mutex_locked());
while (!QTAILQ_EMPTY(&events_list)) {

2
replay/replay-internal.h
View file

@ -149,8 +149,6 @@ void replay_read_next_clock(unsigned int kind);
void replay_init_events(void);
/*! Clears internal data structures for events handling */
void replay_finish_events(void);
/*! Flushes events queue */
void replay_flush_events(void);
/*! Returns true if there are any unsaved events in the queue */
bool replay_has_events(void);
/*! Saves events from queue into the file */