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Subject: Re: [CFT] faster athlon/duron memory copy implementation
From: Daniel Egger <degger@fhm.edu>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: linux-kernel@vger.kernel.org, arjanv@redhat.com
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Am Don, 2002-10-24 um 21.28 schrieb Manfred Spraul:

> It seems the via cpu doesn't support prefetchnta. Could you try the=20
> attached version?

egger@tanja:~$ ./via=20
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $=20

copy_page() tests=20
copy_page function 'warm up run'         took 24318 cycles per page
copy_page function '2.4 non MMX'         took 35819 cycles per page
copy_page function '2.4 MMX fallback'    took 35921 cycles per page
copy_page function '2.4 MMX version'     took 24291 cycles per page
Illegal instruction

Unfortunately I have no space for gdb on it right now sow I cannot
easily debug where it crashes.=20

BTW: I did the same thing you did: Remove the calls to the obviously
offending calls to the "fast" versions. I've no idea why the no_prefetch
version doesn't, though...=20

--=20
Servus,
       Daniel

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