Darn, that's two good ones you given me to review in one day. Officially on my backlog. People interested in kernel-less OS's might also want to look at Tiara and its successor SAFE:
That is a trip. LISP machines were doing tagged memory and GC before most of them. Knight agreeing that SAFE is great work is a sign Im on right track. :)
SAFE is not my work. I was evangelizing many of the same principles, working similar things, and generally try to draw mainstream attention the The Right Thing (eg SAFE) when it manifests for a given problem/domain. High assurance security & systems path has been quite a trip, though. Thanks. :)
Tiara http://dspace.mit.edu/bitstream/handle/1721.1/37589/MIT-CSAI...
SAFE http://www.crash-safe.org/assets/ieee-hst-2013-paper.pdf