I was just mulling this over yesterday with the story about USB tablet driver regression. Running drivers as user processes would essentially give the kernel a

I was just mulling this over yesterday with the story about USB tablet driver regression. Running drivers as user processes would essentially give the kernel a stable ABI. But then we'd see a proliferation of closed-source drivers - there wouldn't be motivation to upstream hardware support anymore. Is that a hidden goal behind this fast IPC thingy?