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SubjectRe: [PATCH 2.4.23-pre8] Remove broken prefetching in free_one_pgd()
Hi!

> > > This code will prefetch from beyond the end of the page table
> > > being cleared ... which is clearly a bad thing if the page table
> > > in question is allocated from the last page of memory (or precedes
> > > a hole on a discontig mem system).
> > Prefetching random addresses should be safe...
>
> It isn't on some CPUs. Early athlons go bang when you prefetch
> past the end of RAM into unmapped memory for eg.

Well, broken HW :-(, but andi's patch should fix up for that.

Pavel

--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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