So nearly everything has been reviewed, thanks mostly to Ben and Jesse. Both Ben and Paulo have tested the patches, and a smattering of bug reporters have also unbeknownst to them also provided testing feedback. It has been running on all of my machines for several months. The stolen handling is a prerequisite for fastboot. The big changes since last time are that a few patches have been reworked to hopefully make Ben happier, notably 03/16: Fix detection of base of stolen memory 05/16: Delay allocation of stolen space for FBC and there was the realisation that there was one mmu-notifier that was called outside of the mm locks which we could use to sleep on GPU activity before page tables were modified. Hence, provided the mmu-notifier is present, we can do userptr safely for normal users. -Chris
