Hi :) this patch series implements protected payloads on top of the mach messaging system. It preserves the semantics for programs not using this functionality.
This is the kernel part of my work that will (hopefully) speed up the Hurd. For a detailed sketch see: id:20131128235647.1092.90...@thinkbox.jade-hamburg.de or http://marc.info/?l=debian-hurd&m=138568308704140&w=2 I believe that the kernel part is feature complete. I had this patch series in the gnumach packages in hurd-ci since January 18th. I have not noticed any problems that I'd attribute to this series, hence I strongly believe that this does in fact preserve the current semantics for existing programs. I did not change the implementation since I posted it in the mail thread mentioned above, I just added documentation. Cheers, Justus
