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Subject: Re: Patch to enable K6-2 and K6-3 processor optimizations
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David Bronaugh <dbronaugh@linuxboxen.org>
Cc: linux-kernel@vger.kernel.org
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Date: 09 Aug 2002 11:31:19 +0100
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We can't actually use MMX/FPU instructions in the kernel in the general
case. That would require saving and restoring the user process floating
point state - which is extremely expensive

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