From: "Pavel Dovgalyuk" <dovgaluk@ispras.ru>
To: 'Peter Maydell' <peter.maydell@linaro.org>,
richard.henderson@linaro.org, cota@braap.org
Cc: "'Ciro Santilli'" <ciro.santilli@gmail.com>,
"'Pavel Dovgalyuk'" <Pavel.Dovgaluk@ispras.ru>,
"'QEMU Developers'" <qemu-devel@nongnu.org>,
"'Kevin Wolf'" <kwolf@redhat.com>,
war2jordan@live.com, "'Igor R'" <boost.lists@gmail.com>,
"'Juan Quintela'" <quintela@redhat.com>,
"'Jason Wang'" <jasowang@redhat.com>,
"'Michael S. Tsirkin'" <mst@redhat.com>,
"'Aleksandr Bezzubikov'" <zuban32s@gmail.com>,
maria.klimushenkova@ispras.ru,
"'Gerd Hoffmann'" <kraxel@redhat.com>,
"'Thomas Dullien'" <thomas.dullien@googlemail.com>,
"'Paolo Bonzini'" <pbonzini@redhat.com>,
"'Alex Bennée'" <alex.bennee@linaro.org>
Subject: Re: [Qemu-devel] [RFC PATCH v6 00/20] replay additions
Date: Wed, 14 Feb 2018 15:39:01 +0300 [thread overview]
Message-ID: <000d01d3a590$caa17950$5fe46bf0$@ru> (raw)
In-Reply-To: <CAFEAcA9yO_4FX0J6hsdAmV7TwZd5kp9J-B2EPwm_KZxDO25bGQ@mail.gmail.com>
> From: Peter Maydell [mailto:peter.maydell@linaro.org]
> On 13 February 2018 at 10:26, Pavel Dovgalyuk <dovgaluk@ispras.ru> wrote:
> > Then I added SCSI adapter with the option –device lsi,id=scsi0 and QEMU
> > failed with the following error:
> >
> > qemu: fatal: IO on conditional branch instruction
>
> > Seems, that your kernel is incomatible with QEMU, which ARM emulation is not
> > good enough.
>
> It seems fairly unlikely to me that the Linux driver for this
> SCSI adaptor is using weirdo self-modifying code of the kind
> that would trip up that cpu_abort(). I would suggest a bit
> more investigation into what's actually happening...
Peter, I bisected this bug and figured out the following.
icount in ARM was broken by the following commit: 9b990ee5a3cc6aa38f81266fb0c6ef37a36c45b9 tcg: Add CPUState cflags_next_tb
This commit breaks execution of Ciro's kernel with enabled icount.
I haven't yet figured out why this happens.
Pavel Dovgalyuk
next prev parent reply other threads:[~2018-02-14 12:39 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-07 12:03 [Qemu-devel] [RFC PATCH v6 00/20] replay additions Pavel Dovgalyuk
2018-02-07 12:03 ` [Qemu-devel] [RFC PATCH v6 01/20] cpu-exec: fix exception_index handling Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 02/20] block: implement bdrv_snapshot_goto for blkreplay Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 03/20] blkreplay: create temporary overlay for underlaying devices Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 04/20] replay: disable default snapshot for record/replay Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 05/20] replay: fix processing async events Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 06/20] replay: fixed replay_enable_events Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 07/20] replay: fix save/load vm for non-empty queue Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 08/20] replay: added replay log format description Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 09/20] replay: save prior value of the host clock Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 10/20] replay/replay.c: bump REPLAY_VERSION again Pavel Dovgalyuk
2018-02-07 12:04 ` [Qemu-devel] [RFC PATCH v6 11/20] replay/replay-internal.c: track holding of replay_lock Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 12/20] replay: make locking visible outside replay code Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 13/20] replay: push replay_mutex_lock up the call tree Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 14/20] replay: don't destroy mutex at exit Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 15/20] replay: check return values of fwrite Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 16/20] replay: avoid recursive call of checkpoints Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 17/20] scripts/replay-dump.py: replay log dumper Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 18/20] replay: don't process async events when warping the clock Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 19/20] replay: save vmstate of the asynchronous events Pavel Dovgalyuk
2018-02-07 12:05 ` [Qemu-devel] [RFC PATCH v6 20/20] replay: don't drain/flush bdrv queue while RR is working Pavel Dovgalyuk
2018-02-07 12:15 ` [Qemu-devel] [RFC PATCH v6 00/20] replay additions Ciro Santilli
2018-02-07 12:38 ` Pavel Dovgalyuk
2018-02-08 7:35 ` Ciro Santilli
2018-02-10 0:09 ` Ciro Santilli
2018-02-12 5:47 ` Pavel Dovgalyuk
2018-02-13 5:58 ` Ciro Santilli
2018-02-13 6:50 ` Pavel Dovgalyuk
2018-02-13 9:07 ` Ciro Santilli
2018-02-13 9:58 ` Pavel Dovgalyuk
2018-02-13 10:26 ` Pavel Dovgalyuk
2018-02-13 10:49 ` Peter Maydell
2018-02-13 10:52 ` Pavel Dovgalyuk
2018-02-13 11:37 ` Ciro Santilli
2018-02-13 12:13 ` Pavel Dovgalyuk
2018-02-14 12:39 ` Pavel Dovgalyuk [this message]
2018-02-19 8:02 ` Pavel Dovgalyuk
2018-02-19 11:15 ` Ciro Santilli
2018-02-20 9:46 ` Pavel Dovgalyuk
2018-02-20 23:59 ` Ciro Santilli
2018-02-21 6:41 ` Pavel Dovgalyuk
2018-02-21 22:40 ` Ciro Santilli
2018-02-22 7:06 ` Pavel Dovgalyuk
2018-02-22 7:10 ` Pavel Dovgalyuk
2018-02-22 17:52 ` Ciro Santilli
2018-02-12 6:53 ` Pavel Dovgalyuk
2018-02-14 6:21 ` Ciro Santilli
2018-02-14 9:20 ` Pavel Dovgalyuk
2018-02-07 13:38 ` no-reply
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