[RFC PATCH v2 00/17] Host1x/TegraDRM UAPI

[Dmitry Osipenko]

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!