From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Tue, 1 Jul 2008 23:46:37 +0000 (-0700)
Subject: x86/cpa: use an undefined PTE bit for testing CPA
X-Git-Tag: v2.6.27-rc1~1106^2~83
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a654ba7a88d90483d0f0586297ea9075d755fc8;p=pandora-kernel.git

x86/cpa: use an undefined PTE bit for testing CPA

Rather than using _PAGE_GLOBAL - which not all CPUs support - to test
CPA, use one of the reserved-for-software-use PTE flags instead.  This
allows CPA testing to work on CPUs which don't support PGD.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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