From 47fbb3be6dfb86d6cf27b68f660115a4e6694c4d Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Sat, 17 May 2014 11:28:05 -0700
Subject: [PATCH] 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@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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