From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 4 Feb 2008 15:48:05 +0000 (+0100)
Subject: x86: use the pfn from the page when change its attributes
X-Git-Tag: v2.6.25-rc1~1057^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=626c2c9d065da0cbd9997e112501487958fde690;p=pandora-kernel.git

x86: use the pfn from the page when change its attributes

When changing the attributes of a pte, we should use the PFN from the
existing PTE rather than going through hoops calculating what we think
it might have been; this is both fragile and totally unneeded. It also
makes it more hairy to call any of these functions on non-direct maps
for no good reason whatsover.

With this change, __change_page_attr() no longer takes a pfn as argument,
which simplifies all the callers.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@tglx.de>
---

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