On Sat, Dec 19, 2020 at 8:55 PM Nicholas Piggin <npiggin@xxxxxxxxx> wrote: > > Time to get this old series out again. Since last time, Bibo found a > couple of the same cases I did (for MIPS only) which I extend to all > archs, and I dropped the "make the pte dirty if the fork parent was > dirty" due to Linus pointing out a dirty PTE costs more to unmap. It > didn't seem to help a great deal anyway on the access-side fortunately. Looks ok to me. I'm surprised it's all that noticeable, but I don't see anything worrisome in the patches. Linus