Ok, no problem, that makes sense. Prefetching pages which are only
physically contiguous could be counterproductive, and you'd need to know
where that boundary is. Would it make sense to add a page size parameter to
the prefetcher? It would be a little less automatic, but would avoid the
prefetcher
Hi Gabe,
I agree with Isaac, some prefetchers use the page size to avoid crossing
page boundaries. These are prefetchers operate on the PA space and have
no access to the TLB to avoid the extra complexity or because they are
far from the core (e.g., L3 prefetcher).
Some other prefetchers operate
Hi,
I'm not using Ruby, so just talking about classic.
Before the code included support for the TLBs, the prefetchers used the
page size to detect page-crossing prefetches in order to discard them.
Now it uses that to decide if it can do a direct prefetch or it needs to
check the TLB for a tr
Actually that's not *quite* the end for isa_traits.hh since the system
class uses the PageBytes and PageShift internally to allocate physical
memory. It's still very close though.
Gabe
On Mon, Sep 7, 2020 at 1:06 AM Gabe Black wrote:
> Hi folks. I've *almost* eliminated use of the getPageBytes
