Re: Athlon fast_copy_page revisited

[Alan Cox]

> schemes in user-space but if I try in kernel space, I get the notorious crash inside
> fast_copy_page.  (If there was some sort of fundamental hardware problem associated with
> prefetch or streaming, wouldn't it also show up in user-space?)  Note: I've yet to try the 

That has been one of the great puzzles. There are patterns that are very
different in kernel space - notably physically linear memory and code running
from a 4Mb tlb.

Alan