Messages in this thread | | | Date | Fri, 9 Jun 2023 11:07:55 +0200 | From | Paolo Bonzini <> | Subject | Re: [PATCH mm-unstable v2 00/10] mm/kvm: locklessly clear the accessed bit |
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On 5/27/23 01:44, Yu Zhao wrote: > TLDR > ==== > This patchset adds a fast path to clear the accessed bit without > taking kvm->mmu_lock. It can significantly improve the performance of > guests when the host is under heavy memory pressure. > > ChromeOS has been using a similar approach [1] since mid 2021 and it > was proven successful on tens of millions devices. > > This v2 addressed previous requests [2] on refactoring code, removing > inaccurate/redundant texts, etc. > > [1]https://crrev.com/c/2987928 > [2]https://lore.kernel.org/r/20230217041230.2417228-1-yuzhao@google.com/
From the KVM point of view the patches look good (though I wouldn't mind if Nicholas took a look at the ppc part). Jason's comment on the MMU notifier side are promising as well. Can you send v3 with Oliver's comments addressed?
Thanks,
Paolo
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