From 242a112af62ea73ce507cbe76c2c944c23b6a1e3 Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Fri, 26 Sep 2014 09:23:20 +0200
Subject: [PATCH] s390/setup: correct 4-level kernel page table detection

Fix calculation to decide if a 4-level kernel page table is required.
Git commit c972cc60c23f5a63 "s390/vmalloc: have separate modules area"
added the separate module area which reduces the size of the vmalloc
area but fails to take it into account for the 3 vs 4 level page table
decision.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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