From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Feb 2008 19:54:14 +0000 (+0100)
Subject: x86: CPA, fix alias checks
X-Git-Tag: v2.6.25-rc3~131^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c31c7d4844ea4817692ae16bf70f9c96c05a50eb;p=pandora-kernel.git

x86: CPA, fix alias checks

c_p_a() did not discover all aliases correctly. (such as when called
on vmalloc()-ed areas or ioremap()-ed areas)

Push the alias checks to the lower, physical level and consistently
discover all aliases that might exist: the low direct mappings and
the high linear kernel-text mappings (on 64-bit).

Thanks to Andi Kleen for pointing out that this was buggy.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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