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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: <1042211459.2706.9.camel@paragon.slim>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [2.4.20] e1000 as module gives unresolved symbol _mmx_memcpy [rescued]
Date: Fri, 10 Jan 2003 19:38:18 +0100	[thread overview]
Message-ID: <200301101838.h0AIcI505736@mail.intergenia.de> (raw)

> 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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                 reply	other threads:[~2003-01-10 18:39 UTC|newest]

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