6 May
2013
6 May
'13
10:45 p.m.
One that appears the same as a GEM object created by userspace. i.e. mmap works.
Oh, we have an mmap interface in the dma_buf thing for that, and iirc Rob Clark even bothered to implement the gem->dma_buf mmap forwarding somewhere. And iirc android's ion-on-dma_buf stuff is even using the mmap interface stuff.
fwiw, what I did was dma_buf -> gem mmap fwding, ie. implement mmap for the dmabuf object by fwd'ing it to my normal gem mmap code. Might be the opposite of what you are looking for here. Although I suppose the reverse could work to, I hadn't really thought about it yet.
Yeah thats the opposite, I want to implement my GEM mmap ioctls using dma-buf mmaps :)
Dave.