On Tue, Jul 6, 2021 at 5:49 PM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > On Tue, Jul 6, 2021 at 5:25 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote: > > I'm not sure about this all or nothing approach. AFAIK DRM has the > > worst problems with out of tree drivers right now. > > Well I guess someone could stand up a drivers/totally-not-gpu and just > let the flood in. Even duplicated drivers and everything included, > because the vendor drivers are better. Worth a shot, we've practically > started this already, I'm just not going to help with the cleanup. tbh I think at this point someone should just do that. Ideally with some boundary like please don't use dma-fence or dma-buf and stuff like that so drivers/gpu doesn't ever have to deal with the fallout. But way too many people think that somehow you magically get the other 90% of an open accel stack if you're just friendly enough and merge the kernel driver, so we really should just that experiment in upstream and watch it pan out in reality. Minimally it would be some great entertainment :-) Also on your claim that drivers/gpu is a non-upstream disaster: I've also learned that that for drivers/rdma there's the upstream driver, and then there's the out-of-tree hackjob the vendor actually supports. So seems to be about the same level of screwed up, if you ask the vendor they tell you the upstream driver isn't a thing they care about and it's just done for a bit of goodwill. Except if you have enormous amounts of volume, then suddenly it's an option ... Minus the fw issue for nvidia, upstream does support all the gpus you can buy right now and that can run on linux with some vendor driver (aka excluding apple M1 and ofc upcoming products from most vendors). drivers/accel otoh is mostly out-of-tree, because aside from Greg mergin habanalabs no one is bold enough anymore to just merge them all. There's lots of those going around that would be ready for picking. And they've been continously submitted to upstream over the years, even before the entire habanalabs thing. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
