Here's a first crack at the missing fs/proc/kcore.c
part of relocating the kernel.

Not as pretty as I'd hoped ... just having your kernel
at a lower address than your modules isn't sufficient
to fit with what the code currently does (which is to
assume that your kernel is in the 1-1 area above
PAGE_OFFSET).

Perhaps it might be cleaner to add the kernel to the
vmlist (as somebody suggested before)?  That would get
rid of almost all the changes except one ... we'd still
need to set KCORE_BASE to the start address of region 5,
so any suggestions on how to do that in a cleaner way
than #ifdef CONFIG_IA64 gratefully accepted.

-Tony