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From: Richard Henderson <richard.henderson@linaro.org>
To: "Stefan Weil" <sw@weilnetz.de>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	"Daniel P. Berrangé" <berrange@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Huth <thuth@redhat.com>,
	qemu-devel@nongnu.org
Subject: Re: [PATCH v4 4/4] meson: Warn when TCI is selected but TCG backend is available
Date: Mon, 25 Jan 2021 12:35:10 -1000	[thread overview]
Message-ID: <81c810b4-1bd3-631d-4b5b-7e54a27a5b4c@linaro.org> (raw)
In-Reply-To: <8f1f2dc6-5ad2-7d48-c2f9-9afa1e4d4065@weilnetz.de>

On 1/25/21 11:02 AM, Stefan Weil wrote:
> Am 25.01.21 um 20:02 schrieb Richard Henderson:
> 
>> On 1/25/21 8:58 AM, Stefan Weil wrote:
>>> I have no evidence that TCI is less reliable than TCG, so I would not write
>>> that.
>> It can't pass make check-tcg.
> 
> 
> Where does it fail? Maybe an expected timeout problem which can be solved by
> increasing the timeouts for TCI?
> 
> I have just run a local test of `make check-tcg` with native TCG and with TCI
> and did not see a difference. But I noticed that in both cases many tests show
> "skipped".

You need to enable docker or podman for your development, so that you get all
of the cross-compilers.

Then:

  TEST    fcvt on arm
TODO ../qemu/tcg/tci.c:614: tcg_qemu_tb_exec()
../qemu/tcg/tci.c:614: tcg fatal error
qemu: uncaught target signal 11 (Segmentation fault) - core dumped

  TEST    float_convs on m68k
TODO ../qemu/tcg/tci.c:614: tcg_qemu_tb_exec()
../qemu/tcg/tci.c:614: tcg fatal error
qemu: uncaught target signal 11 (Segmentation fault) - core dumped

which is of course one of the TODO assertions.
It's positively criminal those still exist in the code.


r~


  reply	other threads:[~2021-01-25 22:36 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-25 14:45 [PATCH v4 0/4] meson: Try to clarify TCG / TCI options for new users Philippe Mathieu-Daudé
2021-01-25 14:45 ` [PATCH v4 1/4] configure: Fix --enable-tcg-interpreter Philippe Mathieu-Daudé
2021-01-25 16:36   ` Paolo Bonzini
2021-01-25 17:10   ` Daniel P. Berrangé
2021-01-26 19:46   ` Stefan Weil
2021-01-25 14:45 ` [PATCH v4 2/4] configure: Improve TCI feature description Philippe Mathieu-Daudé
2021-01-25 16:44   ` Daniel P. Berrangé
2021-01-25 14:45 ` [PATCH v4 3/4] meson: Explicit TCG backend used Philippe Mathieu-Daudé
2021-01-25 16:45   ` Daniel P. Berrangé
2021-01-25 14:45 ` [PATCH v4 4/4] meson: Warn when TCI is selected but TCG backend is available Philippe Mathieu-Daudé
2021-01-25 16:46   ` Daniel P. Berrangé
2021-01-25 16:47   ` Daniel P. Berrangé
2021-01-25 17:05     ` Philippe Mathieu-Daudé
2021-01-25 18:58       ` Stefan Weil
2021-01-25 19:02         ` Richard Henderson
2021-01-25 21:02           ` Stefan Weil
2021-01-25 22:35             ` Richard Henderson [this message]
2021-01-26 11:40               ` Stefan Weil
2021-01-26 17:24                 ` Alex Bennée
2021-01-26 19:44                   ` Stefan Weil
2021-01-26 20:07                     ` Paolo Bonzini
2021-01-26 20:10                       ` Stefan Weil
2021-01-26 22:39                     ` Richard Henderson
2021-01-27  6:53                       ` Stefan Weil
2021-01-27 17:19                         ` Richard Henderson
2021-01-27 19:52                         ` Alex Bennée
2021-01-27 20:49                           ` Stefan Weil
2021-01-27 21:47                             ` Alex Bennée
2021-01-28  2:49                               ` Stefan Weil
2021-01-28  6:51                               ` qemu user mode fails to run programs with large VM / built with address sanitizer (was: Re: [PATCH v4 4/4] meson: Warn when TCI is selected but TCG backend is available) Stefan Weil
2021-01-28  8:29                                 ` Richard Henderson
2021-01-27 10:02                   ` [PATCH v4 4/4] meson: Warn when TCI is selected but TCG backend is available Daniel P. Berrangé
2021-01-27 12:34                     ` Alex Bennée
2021-01-26 10:34           ` Daniel P. Berrangé
2021-01-29  8:06 ` [PATCH v4 0/4] meson: Try to clarify TCG / TCI options for new users Paolo Bonzini

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