On Fri, Nov 17, 2023 at 07:47:00AM +0800, Barry Song wrote: > This has been discussed. Steven, Ryan and I all don't think this is a good > option. in case we have a large folio with 16 basepages, as do_swap_page > can only map one base page for each page fault, that means we have > to restore 16(tags we restore in each page fault) * 16(the times of page faults) > for this large folio. That doesn't seem all that hard to fix? Call set_ptes() instead of set_pte_at(). The biggest thing, I guess, is making sure that all the PTEs you're going to set up are still pte_none().
