From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 19 Jun 2013 07:16:54 +0000 (+0200)
Subject: s390/mem_detect: fix memory hole handling
X-Git-Tag: v3.10~22^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35b03aec919c952e67b0b093638e0d79b468f9bc;p=pandora-kernel.git

s390/mem_detect: fix memory hole handling

With git commit 996b4a7d "s390/mem_detect: remove artificial kdump
memory types" the memory detection code got simplified.
As a side effect the array that describes memory chunks may now
contain empty (zeroed) entries.
All call sites can handle this except for

drivers/s390/char/zcore.c::zcore_memmap_open

which has a really odd user space interface. The easiest fix is to
change the memory hole handling code, so that no empty entries exist
before the last valid entry is reached.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

Reading git-diff-tree failed