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Date: Fri, 6 Apr 2007 22:17:49 +0200
From: Ed Schouten <ed@fxq.nl>
To: Nikolas Britton <nikolas.britton@gmail.com>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: Do we need this junk?
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* Nikolas Britton <nikolas.britton@gmail.com> wrote:
> The legacy bits don't upset me, what upsets me is sacrificing
> performance so we can  support a minority of legacy systems. IIRC? we
> could recode the Kernel for SSE2 math if the processor was guaranteed
> to have that SSE2. SSE2 adds 214 new instructions to the existing x86
> instruction set.

But SSE2 isn't even used in kernel space, not even on AMD64. As far as I
can see, the only exception I can see is pagezero. Just take a look at
src/sys/conf/kern.mk. If it's not even possible to use SSE2 in
kernelspace on amd64, why would it be possible to do so on i386?

--=20
 Ed Schouten <ed@fxq.nl>
 WWW: http://g-rave.nl/

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