David Woodhouse wrote:

The old 2.6.16 kernel handled memory statically and it was shown in the
device tree. The current kernel deals with the hypervisor and hotplugs
the memory, so we should just ignore anything that's reported in the
device-tree. This enables the current kernel to be booted from 2.6.16
without evil hacks in head_64.S to override the device-tree.

The proper way is to parse out just the command line from the incompatible
DT, and use that with the new DT supplied by the bootwrapper.  I planed
to do that in my bootwrapper, but haven't coded it yet.

-Geoff