The Mosberger/Eranian book is the definitive reference to the IA64 Linux implementation. The notes here are to supplement that book, and to abstract information from it.
There are also generic linux notes and documentation:
http://www.csn.ul.ie/~mel/projects/vm/guide/ is a guide to th 2.4 VM
http://www.hpl.hp.com/research/linux/kernel/o1.php are some notes on the O(1) scheduler implementation
Jonathan Corbet of LWN writes:
As some of you may be aware, I've been creating a series of articles on porting device drivers (and other kernel code) to the 2.5 kernel. That series is now (more or less) complete. It's also freely available at this point - no subscription gates to worry about. So I wanted to be sure people knew that this resource is there: