>%A A. Tevanian
>%T Architecture-Independent Virtual Memory Management
>	for Parallel and Distributed Environments: The Mach Approach
>%I Department of Computer Science, Carnegie-Mellon University
>%V CMU-CS-88-106
>%D December 1987
>
>Which describes the early Mach VM system from which the BSD system is
>derived.  It will give you an overview of the basic data structures in the
>machine independent and dependent levels.  I have never found an online
>copy so you may have to order a paper copy.

I have seen this paper (or one very similar to it) in the CMU AFS space; I
had printed it off, but I didn't save the original PostScript file.  If you
want, I might be able to root around there and find it again.

--Ken