[Early RFC 0/6] arch/powerpc: Add 64TB support to ppc64

[Aneesh Kumar K.V]

Hi,

This patchset include preparatory patches for supporting 64TB with ppc64. I haven't
completed the actual patch that bump the USER_ESID bits. I wanted the share the
changes early so that I can get feedback on the approach. The changes itself
contains few FIXME!! which I will be addressing in the later updates.

Thanks,
-aneesh