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sparc64: Add membar to Niagara2 memcpy code.

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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>
This commit is contained in:
David S. Miller 2014-05-17 11:28:05 -07:00
parent b18eb2d779
commit 5aa4ecfd0d
1 changed files with 1 additions and 0 deletions
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arch/sparc/lib/NG2memcpy.S
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@ -236,6 +236,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
*/
VISEntryHalf
membar #Sync
alignaddr %o1, %g0, %g0
add %o1, (64 - 1), %o4