On 2017-08-31 03:00 PM, Jerome Glisse wrote: > I was not saying you should not use mmu_notifier. For achieving B you need > mmu_notifier. Note that if you do like ODP/KVM then you do not need to > pin page. I would like that. I've thought about it before. The one problem I couldn't figure out is, where to set the accessed and dirty bits for the pages. Now we do it when we unpin. If we don't pin the pages in the first place, we don't have a good place for this. Our hardware doesn't give us notifications or accessed/dirty bits, so we have to assume the worst case that the pages are continuously accessed/dirty. I'd appreciate any advice how to handle that. (Sorry, I realize this is going a bit off topic.) A pointer to a document or source code would be great. :) Thanks, Felix
