On Tue, Mar 20, 2018 at 06:47:57PM +0100, Christian König wrote: > Am 20.03.2018 um 15:08 schrieb Daniel Vetter: > > [SNIP] > > For the in-driver reservation path (CS) having a slow-path that grabs a > > temporary reference, drops the vram lock and then locks the reservation > > normally (using the acquire context used already for the entire CS) is a > > bit tricky, but totally feasible. Ttm doesn't do that though. > > That is exactly what we do in amdgpu as well, it's just not very efficient > nor reliable to retry getting the right pages for a submission over and over > again. Out of curiosity, where's that code? I did read the ttm eviction code way back, and that one definitely didn't do that. Would be interesting to update my understanding. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
