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Date: Sun, 30 Jul 2006 21:30:43 +0300
From: Avi Kivity <avi@argo.co.il>
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To: Andi Kleen <ak@suse.de>
CC: Jiri Slaby <jirislaby@gmail.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: FP in kernelspace
References: <200607302015.33684.ak@suse.de>
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Andi Kleen wrote:
>
> >
> > Cannot work on x86-64, even disregarding fp exceptions, because
> > kernel_fpu_begin() doesn't save the sse state which is used by fp math.
> >
> > No?
>
> It does - FXSAVE saves everything.
>

I see.  Thanks for clearing it up.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.