The following series of patches implement a basic framework
for hypervisor-assisted dump. The very first patch provides 
documentation explaining what this is  :-) . Yes, its supposed
to be an improvement over kdump.

The patches mostly work; a list of open issues / todo list
is included in the documentation.  It also appears that 
the not-yet-released firmware versions this was tested 
on are still, ahem, incomplete; this work is also pending.

-- Linas & Manish