Messages in this thread |  | | Date | Wed, 19 Sep 2001 19:55:00 +0100 | From | Arjan van de Ven <> | Subject | Re: [PATCH] Athlon bug stomper. Pls apply. |
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Dan Hollis wrote: > > On Wed, 19 Sep 2001, Linus Torvalds wrote: > > It is _probably_ an undocumented performance thing, and clearing that > > bit may slow something down. But it might also change some behaviour, > > and knowing _what_ the behaviour is might be very useful for figuring > > out what it is that triggers the problem. > > AFAIK noone has even tested it yet to see what it does to performance! Eg > it might slow down memory access so that athlon-optimized memcopy is now > slower than non-athlon-optimized memcopy. And if it turns out to be the > case, we might as well just use the non-athlon-optimized memcopy instead > of twiddling undocumented northbridge bits...
Ok but that part is simple:
run
http://www.fenrus.demon.nl/athlon.c
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