On Tue, Oct 01, 2019 at 09:21:46AM -0700, Alexander Duyck wrote: > I thought what Michal was asking for was what was the benefit of using the > boundary pointer. I added a bit up above and to the description for patch > 3 as on a 32G VM it adds up to about a 18% difference without factoring in > the page faulting and zeroing logic that occurs when we actually do the > madvise. Something maybe worth adding to the log: one disadvantage of the tight integration with the mm core is that only a single reporting device is supported. It's not obvious that more than one is useful though. -- MST
