From: David Gibson <david@gibson.dropbear.id.au>
Date: Mon, 6 Mar 2006 01:51:29 +0000 (+1100)
Subject: [PATCH] powerpc: Better pmd_bad() and pud_bad() checks
X-Git-Tag: v2.6.17-rc1~1117^2~28^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f6be7b77ceaea01a35b37fab26f4ea3b01efe14;p=pandora-kernel.git

[PATCH] powerpc: Better pmd_bad() and pud_bad() checks

At present, the powerpc pmd_bad() and pud_bad() macros return false
unless the given pmd or pud is zero.  This patch makes these tests
more thorough, checking if the given pmd or pud looks like a plausible
pte page or pmd page pointer respectively.  This can result in helpful
error messages when messing with the pagetable code.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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