Per discussion in on the Habana Labs driver submission (https://lore.kernel.org/lkml/20190123000057.31477-1-oded.gabbay@xxxxxxxxx/), there seems to be time to create a separate subsystem for hw accellerators instead of letting them proliferate around the tree (and/or in misc). There's difference in opinion on how stringent the requirements are for a fully open stack for these kind of drivers. I've documented the middle road approach in the first patch (requiring some sort of open low-level userspace for the kernel interaction, and a way to use/test it). Comments and suggestions for better approaches are definitely welcome.
