From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Fri, 25 Jul 2014 12:23:29 +0000 (+0200)
Subject: KVM: s390/mm: Fix page table locking vs. split pmd lock
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~136^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55e4283c3eb1d850893f645dd695c9c75d5fa1fc;p=pandora-kernel.git

KVM: s390/mm: Fix page table locking vs. split pmd lock

commit ec66ad66a0de87866be347b5ecc83bd46427f53b (s390/mm: enable
split page table lock for PMD level) activated the split pmd lock
for s390. Turns out that we missed one place: We also have to take
the pmd lock instead of the page table lock when we reallocate the
page tables (==> changing entries in the PMD) during sie enablement.

Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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