From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 16 Jul 2013 11:25:49 +0000 (+0200)
Subject: s390/bpf,jit: address randomize and write protect jit code
X-Git-Tag: v3.11-rc2~11^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aa2d2c73c21f22ce4c643128b671aa7e7bbff54f;p=pandora-kernel.git

s390/bpf,jit: address randomize and write protect jit code

This is the s390 variant of 314beb9b "x86: bpf_jit_comp: secure bpf
jit against spraying attacks".
With this change the whole jit code and literal pool will be write
protected after creation. In addition the start address of the jit
code won't be always on a page boundary anymore.

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