From: Jan Glauber <jang@linux.vnet.ibm.com>
Date: Tue, 15 Mar 2011 16:08:22 +0000 (+0100)
Subject: [S390] Write protect module text and RO data
X-Git-Tag: v2.6.39-rc1~455^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=305b1523250faf9675919def94906775992ce52d;p=pandora-kernel.git

[S390] Write protect module text and RO data

Implement write protection for kernel modules text and read-only
data sections by implementing set_memory_[ro|rw] on s390.
Since s390 has no execute bit in the pte's NX is not supported.

set_memory_[ro|rw] will only work on normal pages and not on
large pages, so in case a large page should be modified bail
out with a warning.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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