Messages in this thread | | | Date | Fri, 28 Jul 2023 18:13:26 +0200 | Subject | Re: [RFC PATCH v11 10/29] mm: Add AS_UNMOVABLE to mark mapping as completely unmovable | From | Paolo Bonzini <> |
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On 7/28/23 18:02, Vlastimil Babka wrote: >> There's even a comment to that effect later on in the function: > Hmm, well spotted. But it wouldn't be so great if we now had to lock every > inspected page (and not just dirty pages), just to check the AS_ bit. > > But I wonder if this is leftover from previous versions. Are the guest pages > even PageLRU currently? (and should they be, given how they can't be swapped > out or anything?) If not, isolate_migratepages_block will skip them anyway.
No, they're not (migration or even swap-out is not excluded for the future, but for now it's left for future work.
Paolo
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