Subject: patch powerpc-fix-incorrect-setting-of-__have_arch_pte_special.patch added to 2.6.30-stable tree

From: <[email-masked]>
Date: Thu, 01 Oct 2009 15:51:50 -0700

This is a note to let you know that we have just queued up the patch titled

    Subject: powerpc: Fix incorrect setting of __HAVE_ARCH_PTE_SPECIAL

to the 2.6.30-stable tree.  Its filename is

    powerpc-fix-incorrect-setting-of-__have_arch_pte_special.patch

A git repo of this tree can be found at 
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

>>From [email-masked]  Thu Oct  1 15:36:15 2009
From: Weirich, Bernhard <[email-masked]>
Date: Thu, 24 Sep 2009 17:16:53 +1000
Subject: powerpc: Fix incorrect setting of __HAVE_ARCH_PTE_SPECIAL
To: stable <[email-masked]>
Cc: linuxppc-dev list <[email-masked]>, [email-masked], [email-masked]
Message-ID: <1253776613.7103.433.camel@pasglop>

From: Weirich, Bernhard <[email-masked]>

[I'm going to fix upstream differently, by having all CPU types
actually support _PAGE_SPECIAL, but I prefer the simple and obvious
fix for -stable. -- Ben]

The test that decides whether to define __HAVE_ARCH_PTE_SPECIAL on
powerpc is bogus and will end up always defining it, even when
_PAGE_SPECIAL is not supported (in which case it's 0) such as on
8xx or 40x processors.

Signed-off-by: Bernhard Weirich <[email-masked]>
Signed-off-by: Benjamin Herrenschmidt <[email-masked]>
Signed-off-by: Greg Kroah-Hartman <[email-masked]>

---
 arch/powerpc/include/asm/pte-common.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/include/asm/pte-common.h
+++ b/arch/powerpc/include/asm/pte-common.h
@@ -176,7 +176,7 @@ extern unsigned long bad_call_to_PMD_PAG
 #define HAVE_PAGE_AGP
 
 /* Advertise support for _PAGE_SPECIAL */
-#ifdef _PAGE_SPECIAL
+#if _PAGE_SPECIAL != 0
 #define __HAVE_ARCH_PTE_SPECIAL
 #endif

Patches currently in stable-queue which might be from [email-masked] are

queue-2.6.30/powerpc-fix-incorrect-setting-of-__have_arch_pte_special.patch