From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Xenomai <xenomai@xenomai.org>
Subject: Re: [Xenomai] Lacking xsave support in Xenomai
Date: Fri, 25 Jan 2013 19:44:29 +0100 [thread overview]
Message-ID: <5102D28D.2010908@xenomai.org> (raw)
In-Reply-To: <51029170.7070104@siemens.com>
On 01/25/2013 03:06 PM, Jan Kiszka wrote:
> Hi all,
>
> yesterday I pushed a fix to my for-upstream queue that properly disables
> all xsave-dependent CPU features (AVX/AVX2 namely). However, this is no
> real solution for us as it blocks a lot of acceleration potential on
> current Intel CPUs.
>
> Did anyone already look into this in more details? Is it just a matter
> of implementing the necessary context switching bits? Are there known
> pitfalls?
The known pitfalls of FPU support is that we never get it right the
first time. And debugging why it fails is hard.
--
Gilles.
next prev parent reply other threads:[~2013-01-25 18:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-25 14:06 [Xenomai] Lacking xsave support in Xenomai Jan Kiszka
2013-01-25 18:44 ` Gilles Chanteperdrix [this message]
2013-01-25 19:01 ` Jan Kiszka
2013-01-25 19:43 ` Gilles Chanteperdrix
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