5-level pagetable patches break ppc64le

From: Anton Blanchard
Date: Mon Mar 13 2017 - 06:06:22 EST


My ppc64le boot tests stopped working as of commit c2febafc6773 ("mm:
convert generic code to 5-level paging")

We hang part way during boot, just before bringing up the network. I
haven't had a chance to narrow it down yet.