From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 16 Jul 2008 20:54:21 +0000 (-0500)
Subject: powerpc: Fixes for CONFIG_PTE_64BIT for SMP support
X-Git-Tag: v2.6.28-rc1~569^2~47^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bf2b5cdc5fe5e3136ceeecc85141765023ded6e;p=pandora-kernel.git

powerpc: Fixes for CONFIG_PTE_64BIT for SMP support

There are some minor issues with support 64-bit PTEs on a 32-bit processor
when dealing with SMP.

* We need to order the stores in set_pte_at to make sure the flag word
  is set second.
* Change pte_clear to use pte_update so only the flag word is cleared
* Added a WARN_ON to set_pte_at to ensure the pte isn't present for
  the 64-bit pte/SMP case (to ensure our assumption of this fact).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
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