On Mon, Oct 29, 2001 at 03:22:28PM -0800, Linus Torvalds wrote:
> Does it make the accessed bit less reliable? Sure it does. But basically,
> either the page is accessed SO much that it stays in the TLB all the time
> (which is basically not really possible if you page heavily, I suspect),
> or it will age out of the TLB on its own at which point we get the
> accessed bit back.
Think of CPUs with tagged tlbs and lots of entries. Or even a system that
only runs 1 threaded app. Easily triggerable. If people want to optimise
it, great. But go for correctness first, please...
-ben
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This archive was generated by hypermail 2b29 : Wed Oct 31 2001 - 21:00:38 EST