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From: Jeffrey Walton <noloader@gmail.com>
To: kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Is it possible to disable NEON to cause a trap with NEON code?
Date: Fri, 12 Feb 2021 06:17:27 -0500	[thread overview]
Message-ID: <CAH8yC8n2DAdF+g5h_cP7Wj_U15w_rKg6GrwmkyYCn1uX+NuUaA@mail.gmail.com> (raw)

Hi Everyone,

I'm trying to setup a test case on ARM A-32. I want to ensure a NEON
code path is properly guarded at runtime.

I'd like to disable NEON at boot time so that a SIGILL is raised for
NEON instructions. If I get a SIGILL, it tells me there's some NEON in
non-guarded paths.

Is it possible to disable NEON at boot time?

Thanks in advance.

Jeff

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                 reply	other threads:[~2021-02-12 11:18 UTC|newest]

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