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    Subject[PATCH 3.11 122/137] sparc64: Add membar to Niagara2 memcpy code.
    Date
    3.11.10.15 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: "David S. Miller" <davem@davemloft.net>

    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@davemloft.net>
    Signed-off-by: Luis Henriques <luis.henriques@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


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