Would guess it would be complicated and difficult to update the kernel to support something like that. Not sure Linus would entertain PRs for custom boards that do something like that. Would think it would need to be an industry wide push for that. But just speculation..
Yea, that could probably be an even bigger impediment to trying to implement a separate interrupt processing unit I guess. My grasp of this area is tenuous, didn't even contemplate that. Would a new physical setup be required for something like this? Or would it all be in the cpu architecture?
