From: Nick Piggin <npiggin@suse.de>
Date: Tue, 8 Jul 2008 09:31:06 +0000 (+0200)
Subject: [S390] protect _PAGE_SPECIAL bit against mprotect
X-Git-Tag: v2.6.26~47^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=138c9021ca68d6f8a6fac3418995fee102a3cc22;p=pandora-kernel.git

[S390] protect _PAGE_SPECIAL bit against mprotect

Stop mprotect's pte_modify from wiping out the s390 pte_special bit, which
caused oops thereafter when vm_normal_page thought X's abnormal was normal.

Debugged-by: Ryan Hope <rmh3093@gmail.com>
Debugged-by: Zan Lynx <zlynx@acm.org>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

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