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[PATCH] replay: fix replay of the interrupts
From: |
Pavel Dovgalyuk |
Subject: |
[PATCH] replay: fix replay of the interrupts |
Date: |
Tue, 19 Jan 2021 15:39:53 +0300 |
User-agent: |
StGit/0.23 |
Sometimes interrupt event comes at the same time with
the virtual timers. In this case replay tries to proceed
the timers, because deadline for them is zero.
This patch allows processing interrupts and exceptions
by entering the vCPU execution loop, when deadline is zero,
but checkpoint associated with virtual timers is not ready
to be replayed.
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
---
accel/tcg/tcg-cpus-icount.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/accel/tcg/tcg-cpus-icount.c b/accel/tcg/tcg-cpus-icount.c
index 9f45432275..a6d2bb8a88 100644
--- a/accel/tcg/tcg-cpus-icount.c
+++ b/accel/tcg/tcg-cpus-icount.c
@@ -81,7 +81,13 @@ void icount_handle_deadline(void)
int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL,
QEMU_TIMER_ATTR_ALL);
- if (deadline == 0) {
+ /*
+ * Instructions, interrupts, and exceptions are processed in cpu-exec.
+ * Don't interrupt cpu thread, when these events are waiting
+ * (i.e., there is no checkpoint)
+ */
+ if (deadline == 0
+ && (replay_mode == REPLAY_MODE_RECORD || replay_has_checkpoint())) {
icount_notify_aio_contexts();
}
}
- [PATCH] replay: fix replay of the interrupts,
Pavel Dovgalyuk <=
- Re: [PATCH] replay: fix replay of the interrupts, Philippe Mathieu-Daudé, 2021/01/22
- Re: [PATCH] replay: fix replay of the interrupts, Paolo Bonzini, 2021/01/23
- Re: [PATCH] replay: fix replay of the interrupts, Pavel Dovgalyuk, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Paolo Bonzini, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Alex Bennée, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Claudio Fontana, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Claudio Fontana, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Alex Bennée, 2021/01/25
- Re: [PATCH] replay: fix replay of the interrupts, Claudio Fontana, 2021/01/25