Messages in this thread | | | Date | Thu, 13 Apr 2017 09:34:11 -0700 | From | Matthew Wilcox <> | Subject | Re: [RFC] Re: Costless huge virtual memory? /dev/same, /dev/null? |
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On Thu, Apr 13, 2017 at 06:29:46PM +0200, Samuel Thibault wrote: > (Ideally we'd be able to take the MAP_HUGETLB mmap flag into account to > map a single huge page repeatedly, even lowering the populating cost, > but AIUI of the current hugepage support it would be far from easy)
You could implement ->map_pages instead of (or as well as) ->fault, which would lower your costs if that is a concern. I think the eventual intent is that map_pages would be able to populate a PMD or even a PUD.
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