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Message-ID: <lsq.1410438733.407810982@decadent.org.uk>
Date: Thu, 11 Sep 2014 13:32:13 +0100
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org, "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.2 114/131] sparc64: Add membar to Niagara2 memcpy code.
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@...emloft.net>
[ 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@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
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 0aed756..e993fc8 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
--
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