projects / thirdparty / kernel / stable-queue.git / blame
| Commit | Line | Data |
|---|---|---|
| c6f854be GKH |
1 | From foo@baz Thu Aug 7 22:33:35 PDT 2014 |
| 2 | From: "David S. Miller" <davem@davemloft.net> | |
| 3 | Date: Sat, 17 May 2014 11:28:05 -0700 | |
| 4 | Subject: sparc64: Add membar to Niagara2 memcpy code. | |
| 5 | ||
| 6 | From: "David S. Miller" <davem@davemloft.net> | |
| 7 | ||
| 8 | [ Upstream commit 5aa4ecfd0ddb1e6dcd1c886e6c49677550f581aa ] | |
| 9 | ||
| 10 | This is the prevent previous stores from overlapping the block stores | |
| 11 | done by the memcpy loop. | |
| 12 | ||
| 13 | Based upon a glibc patch by Jose E. Marchesi | |
| 14 | ||
| 15 | Signed-off-by: David S. Miller <davem@davemloft.net> | |
| 16 | Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| 17 | --- | |
| 18 | arch/sparc/lib/NG2memcpy.S | 1 + | |
| 19 | 1 file changed, 1 insertion(+) | |
| 20 | ||
| 21 | --- a/arch/sparc/lib/NG2memcpy.S | |
| 22 | +++ b/arch/sparc/lib/NG2memcpy.S | |
| 23 | @@ -236,6 +236,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len | |
| 24 | */ | |
| 25 | VISEntryHalf | |
| 26 | ||
| 27 | + membar #Sync | |
| 28 | alignaddr %o1, %g0, %g0 | |
| 29 | ||
| 30 | add %o1, (64 - 1), %o4 |