[3.11.y.z extended stable] Patch "sparc64: Add membar to Niagara2 memcpy code." has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    sparc64: Add membar to Niagara2 memcpy code.

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 2cbfc1c4912f5684bf4c718c87d0d7a66409604f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem at davemloft.net>
Date: Sat, 17 May 2014 11:28:05 -0700
Subject: sparc64: Add membar to Niagara2 memcpy code.

commit 5aa4ecfd0ddb1e6dcd1c886e6c49677550f581aa upstream.

This is the prevent previous stores from overlapping the block stores
done by the memcpy loop.

Based upon a glibc patch by Jose E. Marchesi

Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 arch/sparc/lib/NG2memcpy.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sparc/lib/NG2memcpy.S b/arch/sparc/lib/NG2memcpy.S
index 2c20ad63ddbf..30eee6e8a81b 100644
--- a/arch/sparc/lib/NG2memcpy.S
+++ b/arch/sparc/lib/NG2memcpy.S
@@ -236,6 +236,7 @@ FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
 	 */
 	VISEntryHalf

+	membar		#Sync
 	alignaddr	%o1, %g0, %g0

 	add		%o1, (64 - 1), %o4
--
1.9.1