Progress: * QEMU-623 [Nested Virtualization Emulation] - Progress on debugging: fixed last week's bugs, and can now get the outer kernel to boot a middle kernel which boots an inner kernel. Unfortunately the inner kernel boot hangs during init of the PF_NETLINK subsystem, when it hits a prefetch abort due to a permissions check failure in the stage 2... - tidied up a lot of the bugfix fixup patches I had in my patchstack and merged them into the correct patches; they would be quite close to ready to send out if not for the bug I'm chasing down.

-- PMM