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

[Kamal Mostafa]

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-3.13.y-queue branch of the 3.13.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-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.7.

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

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 62e9de3aa86fa48ea5d518a5894b629d84a42509 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.

[ Upstream commit 5aa4ecfd0ddb1e6dcd1c886e6c49677550f581aa ]

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: Kamal Mostafa <kamal 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 2c20ad6..30eee6e 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