From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu@igor2.repo.hu, QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [PULL 0/3] tcg patch queue
Date: Mon, 2 Nov 2020 08:14:07 -0800 [thread overview]
Message-ID: <dcbeb059-af0e-2a22-8ec1-56bad92abfc4@linaro.org> (raw)
In-Reply-To: <CAFEAcA8GOB1ivDj=JyjJb8Y5gfwSJePrrV1eci823H8FX_74aQ@mail.gmail.com>
On 11/2/20 5:57 AM, Peter Maydell wrote:
> On Tue, 27 Oct 2020 at 16:51, Richard Henderson
> <richard.henderson@linaro.org> wrote:
>> ----------------------------------------------------------------
>> Optimize across branches.
>> Add logging for cpu_io_recompile.
>
> Igor2 reported on IRC that this seems to cause a crash when
> using an hppa guest. This is apparently happening on a proprietary
> disk image, so no reproducible test case, but the logging of
> the tail end of -d in_asm,op is at:
> http://igor2.repo.hu/tmp/in_asm_op.log
>
> QEMU asserts with
> ../tcg/tcg.c:3346: tcg fatal error
>
> The TB in question involves several conditional branches; the
> generated TCG ops look OK to me, and reverting the two commits
> b4cb76e6208cf6b5b and cd0372c515c4732d8b fixes the crash.
> (We didn't test reverting only one of the two commits separately.)
Ok, thanks, I'll look into it.
r~
next prev parent reply other threads:[~2020-11-02 16:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 16:51 [PULL 0/3] tcg patch queue Richard Henderson
2020-10-27 16:51 ` [PULL 1/3] tcg: Do not kill globals at conditional branches Richard Henderson
2020-10-27 16:51 ` [PULL 2/3] tcg/optimize: Flush data at labels not TCG_OPF_BB_END Richard Henderson
2020-10-27 16:51 ` [PULL 3/3] accel/tcg: Add CPU_LOG_EXEC tracing for cpu_io_recompile() Richard Henderson
2020-10-31 9:48 ` [PULL 0/3] tcg patch queue Peter Maydell
2020-11-02 13:57 ` Peter Maydell
2020-11-02 16:14 ` Richard Henderson [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-06-02 15:13 Richard Henderson
2022-06-02 16:41 ` Richard Henderson
2022-02-28 18:09 Richard Henderson
2022-03-01 19:43 ` Peter Maydell
2021-01-04 17:35 Richard Henderson
2021-01-05 21:06 ` Peter Maydell
2020-12-11 1:10 Richard Henderson
2020-12-11 16:55 ` Peter Maydell
2020-02-13 0:23 Richard Henderson
2020-02-13 18:55 ` Peter Maydell
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