From: "Pavel Dovgaluk" <Pavel.Dovgaluk@ispras.ru>
To: 'Paolo Bonzini' <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, peter.crosthwaite@xilinx.com,
alex.bennee@linaro.org, mark.burton@greensocs.com,
real@ispras.ru, batuzovk@ispras.ru,
maria.klimushenkova@ispras.ru, afaerber@suse.de,
fred.konrad@greensocs.com
Subject: Re: [Qemu-devel] [RFC PATCH v8 08/21] cpu: replay instructions sequence
Date: Mon, 2 Feb 2015 15:42:38 +0300 [thread overview]
Message-ID: <001901d03ee5$ba5d1640$2f1742c0$@Dovgaluk@ispras.ru> (raw)
In-Reply-To: <54CF6FA9.7090600@redhat.com>
> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 02/02/2015 13:28, Pavel Dovgaluk wrote:
> >>> > > cpu->exception_index = EXCP_INTERRUPT;
> >>> > > next_tb = 0;
> >>> > > + qemu_notify_event();
> >> >
> >> > Why is this needed?
> > It is needed to wake up iothread in replay mode.
> > Otherwise it waits for additional time and replay becomes too slow.
>
> What event (something from a timerlist?) is ready, that has not been
> notified to the iothread yet? qemu_notify_event() should never be
> needed in common case. It's probably missing somewhere else.
I think in this case there are no events at all - just reading timers values
that were made while recording.
We have to replay these reads by waking iothread.
Pavel Dovgalyuk
next prev parent reply other threads:[~2015-02-02 12:42 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 8:51 [Qemu-devel] [RFC PATCH v8 00/21] Deterministic replay core Pavel Dovgalyuk
2015-01-22 8:51 ` [Qemu-devel] [RFC PATCH v8 01/21] i386: partial revert of interrupt poll fix Pavel Dovgalyuk
2015-01-22 8:51 ` [Qemu-devel] [RFC PATCH v8 02/21] replay: global variables and function stubs Pavel Dovgalyuk
2015-01-29 9:02 ` Paolo Bonzini
2015-01-29 23:23 ` Eric Blake
2015-01-22 8:51 ` [Qemu-devel] [RFC PATCH v8 03/21] sysemu: system functions for replay Pavel Dovgalyuk
2015-01-29 9:03 ` Paolo Bonzini
2015-01-22 8:51 ` [Qemu-devel] [RFC PATCH v8 04/21] replay: internal functions for replay log Pavel Dovgalyuk
2015-01-29 9:11 ` Paolo Bonzini
2015-01-30 12:56 ` Pavel Dovgaluk
2015-01-30 13:06 ` Paolo Bonzini
2015-01-30 13:11 ` Mark Burton
2015-01-22 8:51 ` [Qemu-devel] [RFC PATCH v8 05/21] replay: introduce mutex to protect the " Pavel Dovgalyuk
2015-01-29 9:12 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 06/21] replay: introduce icount event Pavel Dovgalyuk
2015-01-29 9:14 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 07/21] cpu-exec: allow temporary disabling icount Pavel Dovgalyuk
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 08/21] cpu: replay instructions sequence Pavel Dovgalyuk
2015-01-29 9:32 ` Paolo Bonzini
2015-02-02 12:28 ` Pavel Dovgaluk
2015-02-02 12:38 ` Paolo Bonzini
2015-02-02 12:42 ` Pavel Dovgaluk [this message]
[not found] ` <28583.7738695138$1422880978@news.gmane.org>
2015-02-02 13:18 ` Paolo Bonzini
2015-02-16 12:26 ` Pavel Dovgaluk
[not found] ` <6071.25815372473$1424089600@news.gmane.org>
2015-02-16 12:59 ` Paolo Bonzini
2015-02-16 13:27 ` Pavel Dovgaluk
[not found] ` <8198.56250095672$1424093273@news.gmane.org>
2015-02-16 13:31 ` Paolo Bonzini
2015-02-16 13:37 ` Pavel Dovgaluk
[not found] ` <39577.5216319182$1424093895@news.gmane.org>
2015-02-16 13:53 ` Paolo Bonzini
2015-02-17 8:43 ` Pavel Dovgaluk
2015-02-17 10:58 ` Paolo Bonzini
2015-02-17 11:35 ` Pavel Dovgaluk
2015-02-17 12:21 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 09/21] replay: interrupts and exceptions Pavel Dovgalyuk
2015-01-29 9:44 ` Paolo Bonzini
2015-02-02 13:50 ` Pavel Dovgaluk
[not found] ` <23862.806443549$1422885088@news.gmane.org>
2015-02-02 14:18 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 10/21] replay: asynchronous events infrastructure Pavel Dovgalyuk
2015-01-29 10:06 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 11/21] replay: recording and replaying clock ticks Pavel Dovgalyuk
2015-01-29 10:16 ` Paolo Bonzini
2015-02-03 10:51 ` Pavel Dovgaluk
2015-02-03 11:04 ` Paolo Bonzini
2015-02-03 11:23 ` Pavel Dovgaluk
2015-02-03 11:59 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 12/21] replay: recording and replaying different timers Pavel Dovgalyuk
2015-01-29 10:20 ` Paolo Bonzini
2015-02-03 14:05 ` Pavel Dovgaluk
2015-02-04 15:20 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 13/21] replay: shutdown event Pavel Dovgalyuk
2015-01-29 10:20 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 14/21] replay: checkpoints Pavel Dovgalyuk
2015-01-30 11:05 ` Paolo Bonzini
2015-01-22 8:52 ` [Qemu-devel] [RFC PATCH v8 15/21] aio: replace stack of bottom halves with queue Pavel Dovgalyuk
2015-01-30 10:43 ` Paolo Bonzini
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 16/21] replay: bottom halves Pavel Dovgalyuk
2015-01-30 10:49 ` Paolo Bonzini
2015-02-11 13:03 ` Pavel Dovgaluk
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 17/21] replay: replay aio requests Pavel Dovgalyuk
2015-01-30 11:07 ` Paolo Bonzini
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 18/21] replay: thread pool Pavel Dovgalyuk
2015-01-30 11:13 ` Paolo Bonzini
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 19/21] replay: initialization and deinitialization Pavel Dovgalyuk
2015-01-30 11:02 ` Paolo Bonzini
2015-02-09 12:59 ` Pavel Dovgaluk
2015-02-09 13:01 ` Paolo Bonzini
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 20/21] replay: command line options Pavel Dovgalyuk
2015-01-30 10:54 ` Paolo Bonzini
2015-02-09 12:15 ` Pavel Dovgaluk
2015-02-09 12:26 ` Paolo Bonzini
2015-02-12 9:12 ` Pavel Dovgaluk
2015-02-12 14:12 ` Paolo Bonzini
2015-01-22 8:53 ` [Qemu-devel] [RFC PATCH v8 21/21] replay: recording of the user input Pavel Dovgalyuk
2015-01-30 11:23 ` Paolo Bonzini
2015-02-12 7:43 ` Pavel Dovgaluk
2015-02-12 8:08 ` Pavel Dovgaluk
2015-02-12 14:41 ` Paolo Bonzini
2015-01-28 11:45 ` [Qemu-devel] [RFC PATCH v8 00/21] Deterministic replay core Pavel Dovgaluk
[not found] ` <28048.5671981753$1422445570@news.gmane.org>
2015-01-29 10:21 ` Paolo Bonzini
2015-01-30 11:25 ` Paolo Bonzini
2015-02-02 14:30 ` Paolo Bonzini
2015-02-03 6:47 ` Pavel Dovgaluk
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