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Re: [PATCH v2] replay: notify CPU on event

From: Pavel Dovgalyuk
Subject: Re: [PATCH v2] replay: notify CPU on event
Date: Wed, 24 Feb 2021 11:26:26 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0


On 16.02.2021 12:34, Pavel Dovgalyuk wrote:
This patch enables vCPU notification to wake it up
when new async event comes in replay mode.

The motivation of this patch is the following.
Consider recorded block async event. It is saved into the log
with one of the checkpoints. This checkpoint may be passed in
vCPU loop. In replay mode when this async event is read from
the log, and block thread task is not finished yet, vCPU thread
goes to sleep. That is why this patch adds waking up the vCPU
to process this finished event.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
  replay/replay-events.c |    1 +
  1 file changed, 1 insertion(+)

diff --git a/replay/replay-events.c b/replay/replay-events.c
index a1c6bb934e..92dc800219 100644
--- a/replay/replay-events.c
+++ b/replay/replay-events.c
@@ -126,6 +126,7 @@ void replay_add_event(ReplayAsyncEventKind event_kind,
      QTAILQ_INSERT_TAIL(&events_list, event, events);
+    qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
void replay_bh_schedule_event(QEMUBH *bh)

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