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Subject: Re: [2.4.20] e1000 as module gives unresolved symbol _mmx_memcpy
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jurgen Kramer <gtm.kramer@inter.nl.net>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Fri, 2003-01-10 at 15:10, Jurgen Kramer wrote:
> a) a kernel build for a VIA C3 doesn't use MMX, userspace programs can
> still use it

Basically true. It might be instructive to do more benching on this with
the C3 and MMX especially if the new cores add full prefetch stuff

> b) Both kernel and userspace can't use MMX any more

MMX is designed to need no OS support. SSE/SSE2 do need OS helpers but
not MMX.

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