On Thu, 24 Mar 2005, David Mosberger wrote:
> That's definitely the case. See my earlier post on this topic:
>
> http://www.gelato.unsw.edu.au/linux-ia64/0409/11012.html
>
> Unfortunately, nobody reported any results for larger machines and/or
> more interesting workloads, so the patch is in limbo at this time.
> Clearly, if the CPU that's clearing the page is likely to use that
> same page soon after, it'd be useful to use temporal stores.
So it would be useful to have
clear_page -> Temporal. Only zaps one page
and
clear_pages -> Zaps arbitrary order of page non-temporal
Rework the clear_pages patch to do just that? Maybe rename clear_pages
clear_pages_nt?
prep_zero_page would use a temporal clear for an order 0 page but a
nontemporal clear for higher order pages.
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