From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 14 Nov 2011 10:19:00 +0000 (+0100)
Subject: [S390] fix pgste update logic
X-Git-Tag: v3.2-rc3~49^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09b538833b85521d937a06faf61e6a3273253cc0;p=pandora-kernel.git

[S390] fix pgste update logic

The pgste_update_all / pgste_update_young and pgste_set_pte need to
check if the pte entry contains a valid page address before the storage
key can be accessed. In addition pgste_set_pte needs to set the access
key and fetch protection bit of the new pte entry, not the old entry.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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