Hi Mark,
Thanks for getting back to me, yea I'm running my fsb at 100
already....still seems to be the same problem.
I donno, I'm just gonna have to mess around with things till I get it right
;-)
Thanks for the guidance anyways.
Regards
David Wilson
Technical Support Centre
The S.A Internet
0860 100 869
http://www.sai.co.za
-----Original Message-----
From: Mark Hahn [mailto:hahn@coffee.psychology.mcmaster.ca]
Sent: 16 May 2001 01:01
To: David Wilson
Cc: linux-kernel@vger.kernel.org
Subject: Re: FW: I think I've found a serious bug in AMD Athlon
page_alloc.c routines, where do I mail the developer(s) ?
> I think I've found a serious bug in AMD Athlon page_alloc.c routines in
there's nothing athlon-specific there.
> correct on the DFI AK75-EC motherboard, if I set the CPU kernel type to
586
> everything is 100%, if I use "Athlon" kernel type I get:
> kernel BUG at page_alloc.c:73
when you select athlon at compile time, you're mainly
getting Arjan's athlon-specific page-clear and -copy functions
(along with some relatively trivial alignment changes).
these functions are ~3x as fast as the generic ones,
and seem to cause dram/cpu-related oopes on some machines.
in short: faster code pushes the hardware past stability.
there's no reason, so far, to think that there's anything
wrong with the code - Alan had a possible issue with prefetching
and very old Atlons, but the people reporting problems like this
are actually running kt133a and new fsb133 Athlons.
> I've changed RAM, Motherboard etc... still the same.
changed to a non-kt133a board? how about running fsb and/or dram
at 100, rather than 133?
> Also the same system runs linux-2.2.16 100%
2.2 doesn't have the fast page-clear and -copy code afaik.
afaik, there are *no* problems on kt133 machines,
and haven't heard any pain from people who might have
Ali Magic1, AMD 760 or KT266 boards, but they're still rare.
-
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This archive was generated by hypermail 2b29 : Wed May 23 2001 - 21:00:16 EST