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SubjectRe: Subtle MM bug
On Fri, Jan 12, 2001 at 09:11:43PM +0000, Russell King wrote:
> Eric W. Biederman writes:
> > Hmm. I would think that increasing the logical page size in the kernel
> > would be the trivial way to handle virtual aliases. (i.e.) with a large
> > enough page size you can't actually have a virtual alias.
> There are types of caches out there that no matter how large the page size,
> you will always have alias issues. These are ones where the cache lines
> are indexed independent of virtual address (and therefore can have funny
> cache line replacement algorithms).
> And yes, you guessed which processor has it. ;)

I recently spoke with some CPU architecture researcher at some university
about cache architectures; I suspect in the near future we'll see more
funny cache indexing and replacment algorithems ...


"Embrace, Enhance, Eliminate" - it worked for the pope, it'll work for Bill.
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