09.09.2020 11:40, Mikko Perttunen пишет: > On 9/9/20 2:36 AM, Dmitry Osipenko wrote: >> 05.09.2020 13:34, Mikko Perttunen пишет: >>> Hi all, >>> >>> here's a second revision of the Host1x/TegraDRM UAPI proposal, >>> hopefully with most issues from v1 resolved, and also with >>> an implementation. There are still open issues with the >>> implementation: >> Could you please clarify the current status of the DMA heaps. Are we >> still going to use DMA heaps? >> > > Sorry, should have mentioned the status in the cover letter. I sent an > email to dri-devel about how DMA heaps should be used -- I believe the > conclusion was that it's not entirely clear, but dma-bufs should only be > used for buffers shared between engines. So for the time being, we > should still implement GEM for intra-TegraDRM buffers. There seems to be > some planning ongoing to see if the different subsystem allocators can > be unified (see dma-buf heaps talk from linux plumbers conference), but > for now we should go for GEM. Thanks!
