You'd think I was an expert, given that I gave that segment of the talk, but I haven't yet dived that deep into Genera's internals. As I understand it though,

You'd think I was an expert, given that I gave that segment of the talk, but I haven't yet dived that deep into Genera's internals. As I understand it though, you don't have the concept of page faults at the image level; IIRC, Genera doesn't have any form of virtual memory, or if it does, it's all in microcode. Task switches are, iirc, handled in the image, but in the same way that it's done in Smalltalk: there's a function in the "kernel" to decide what task to switch to next, but the actual context switch is handled in microcode. Also, there's no such thing as privilege separation; everything's running in a single address space and namespacing is handled using Common Lisp's package system.