Documentation and ideas for related work

[Paul Boddie]

Hello,

Since there have been some messages about documentation, I thought I might ask 
about architectural documentation for the Hurd. I have taken a look at a few 
of the resources mentioned on this page:

https://www.gnu.org/software/hurd/hurd/documentation.html

Previously, I tried to get some kind of discussion going on the l4-hurd 
mailing list about architectural topics, with regard to developing Hurd-like 
components on the L4 Runtime Environment:

http://lists.gnu.org/archive/html/l4-hurd/2019-03/msg00000.html

But it appears that there is not much appetite for discussion on that list any 
more:

http://lists.gnu.org/archive/html/l4-hurd/2019-03/msg00001.html

What interests me most at the moment is how filesystem content is paged into 
processes, whether there is some kind of sharing of accessed pages between 
processes (some kind of page cache, maybe), and how such things are organised.

I did find some messages about paging and some thoughts on L4-related work 
from seventeen years ago:

http://lists.gnu.org/archive/html/l4-hurd/2002-06/msg00001.html
http://lists.gnu.org/archive/html/l4-hurd/2002-06/msg00007.html

But it seems to me that if there is some documentation about the architecture 
of the Hurd that covers such things and others, it might be useful for me to 
take a look.

Thanks for any help!

Paul