On Tue, Apr 27, 2021 at 1:38 PM Dave Airlie airlied@gmail.com wrote:
On Tue, 27 Apr 2021 at 22:06, Christian König ckoenig.leichtzumerken@gmail.com wrote:
Correct, we wouldn't have synchronization between device with and without user queues any more.
That could only be a problem for A+I Laptops.
Since I think you mentioned you'd only be enabling this on newer chipsets, won't it be a problem for A+A where one A is a generation behind the other?
I'm not really liking where this is going btw, seems like a ill thought out concept, if AMD is really going down the road of designing hw that is currently Linux incompatible, you are going to have to accept a big part of the burden in bringing this support in to more than just amd drivers for upcoming generations of gpu.
In case my previous e-mail sounded too enthusiastic, I'm also pensive about this direction. I'm not sure I'm ready to totally give up on all of Linux WSI just yet. We definitely want to head towards memory fences and direct submission but I'm not convinced that throwing out all of interop is necessary. It's certainly a very big hammer and we should try to figure out something less destructive, if that's possible. (I don't know for sure that it is.)
--Jason