From: "Rémi Denis-Courmont" <remi@remlab.net>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH] checkasm: disable unaligned access emulation
Date: Wed, 05 Jun 2024 22:46:30 +0300
Message-ID: <5784687.DvuYhMxLoT@basile.remlab.net> (raw)
In-Reply-To: <20240601080355.8136-1-remi@remlab.net>
Le lauantaina 1. kesäkuuta 2024, 11.03.55 EEST Rémi Denis-Courmont a écrit :
> The OS may silently fix (emulate) unaligned hardware access exceptions.
> This is extremely slow and code should be fixed not to rely on unaligned
> access on affected hardware. Accordingly this requests that the OS
> disable emulation and instead throw Bus error, which will be caught by
> checkasm's signal handler.
>
> This has no effects if the hardware supports unaligned access in
> hardware, since no exceptions are generated. prctl() will fail safe in
> that case.
Will push soon.
--
雷米‧德尼-库尔蒙
http://www.remlab.net/
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prev parent reply other threads:[~2024-06-05 19:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-01 8:03 Rémi Denis-Courmont
2024-06-05 19:46 ` Rémi Denis-Courmont [this message]
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