On 05/09/19 20:09, Jerome Glisse wrote: > Not sure i understand, you are saying that the solution i outline above > does not work ? If so then i think you are wrong, in the above solution > the importing process mmap a device file and the resulting vma is then > populated using insert_pfn() and constantly keep synchronize with the > target process through mirroring which means that you never have to look > at the struct page ... you can mirror any kind of memory from the remote > process. If insert_pfn in turn calls MMU notifiers for the target VMA (which would be the KVM MMU notifier), then that would work. Though I guess it would be possible to call MMU notifier update callbacks around the call to insert_pfn. Paolo
