Re: [Patch v3 0/7] Optimize clear dirty log

Sean Christopherson
2023-03-17T22:58:45Z

On Fri, Feb 10, 2023, Vipin Sharma wrote:
> This patch series has optimized control flow of clearing dirty log and
> improved its performance by ~40% (2% more than v2).
>
> It also got rid of many variants of the handle_changed_spte family of
> functions and converged logic to one handle_changed_spte() function. It
> also remove tdp_mmu_set_spte_no_[acc_track|dirty_log] and various
> booleans for controlling them.
>
> v3:
> - Tried to do better job at writing commit messages.

LOL, that's the spirit!

Did a cursory glance, looks good. I'll do a more thorough pass next week and get
it queued up if all goes well. No need for a v4 at this point, I'll fixup David's
various nits when applying. I'll also add a link in patch 2 to the discussion
about why we determined that bypassing __tdp_mmu_set_spte() is safe; that's critical
information that isn't captured in the changelog.