There's a whole different coprocessor tied to the GPU for the rendering (AGX), though the generic RTKit/mailbox stuff is the same as it is for DCP. That will la

There's a whole different coprocessor tied to the GPU for the rendering (AGX), though the generic RTKit/mailbox stuff is the same as it is for DCP. That will largely involve command submission, memory management, and (a relatively big unknown) GPU preemption. In principle, the GPU kernel side should be quite a bit simpler than DCP, since display management is quite a bit hairier than (relatively) simpler GPU operations; most of the complexity of the GPU is in the userspace side. But we won't know until we get there.