On Wed, Jul 24, 2019 at 11:46:01AM -0400, Andrew F. Davis wrote: > https://patchwork.kernel.org/patch/10863957/ > > It's actually a more simple heap type IMHO, but the logic inside is > incompatible with the system/CMA heaps, if you move any of their code > into the core framework then this heap stops working. Leading to out of > tree hacks on the core to get it back functional. I see the same for the > "complex" heaps with ION.
Well, this mostly is just another allocator (gen_pool). And given that the whole dma-buf infrastucture assumes things are backed by pages we really shouldn't need much more than an alloc and a free callback (and maybe the pgprot to map it) and handle the rest in common code.
