Hi,

Here's an updated version of the patch, which builds against Avi's
current tree. Please note this is a bit of a work in progress version
as I am trying to eliminate the need for the vcpu -> env linear
conversion, but I wanted to send out something before heading off for
the weekend.

Hollis if you have time to check this out for PPC, I would much
appreciate it.

Cheers,
Jes