From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Date: Wed, 10 Nov 2010 09:05:55 +0000 (+0100)
Subject: [S390] mm: add devmem_is_allowed() for STRICT_DEVMEM checking
X-Git-Tag: v2.6.37-rc3~34^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ec6743bb06510c7b629603ce35713d6ae9273579;p=pandora-kernel.git

[S390] mm: add devmem_is_allowed() for STRICT_DEVMEM checking

Provide the devmem_is_allowed() routine to restrict access to
kernel memory from userspace.
Set the CONFIG_STRICT_DEVMEM config option to switch on checking.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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