Re: [PATCH 00/45] hugetlb pagewalk unification

[Jason Gunthorpe]

On Thu, Jul 04, 2024 at 10:30:14AM -0400, Peter Xu wrote:
> Hey, David,
> 
> On Thu, Jul 04, 2024 at 12:44:38PM +0200, David Hildenbrand wrote:
> > There are roughly two categories of page table walkers we have:
> > 
> > 1) We actually only want to walk present folios (to be precise, page
> >    ranges of folios). We should look into moving away from the walk the
> >    page walker API where possible, and have something better that
> >    directly gives us the folio (page ranges). Any PTE batching would be
> >    done internally.

This seems like a good direction for some users as well to me.

If we can reduce the number of places touching the pud/pmd/pte APIs
that is a nice abstraction to reach toward.

It naturally would remove hugepte users too.

Jason