Yep, user space. It will be restarted. (Note that I may lie to you about /, it's somewhat special and I don't remember details). Edit: oh, and when it crashes

Yep, user space. It will be restarted. (Note that I may lie to you about /, it's somewhat special and I don't remember details). Edit: oh, and when it crashes it will get handled by crash server (you guessed it, user-space program) which can kill/suspend/coredump it. You can choose even by env variable!