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authorDavid S. Miller <davem@davemloft.net>2005-08-29 15:46:22 -0400
committerDavid S. Miller <davem@davemloft.net>2005-08-29 15:46:22 -0400
commit4f07118f656c179740cad35b827032e2e29b1210 (patch)
tree7ddeb17346fe25ae75aa5373659c053afb9ef5f5 /arch/sparc64/kernel/process.c
parent442464a50077ff00454ff8d7628cbe1b8eacc034 (diff)
[SPARC64]: More fully work around Spitfire Errata 51.
It appears that a memory barrier soon after a mispredicted branch, not just in the delay slot, can cause the hang condition of this cpu errata. So move them out-of-line, and explicitly put them into a "branch always, predict taken" delay slot which should fully kill this problem. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/process.c')
-rw-r--r--arch/sparc64/kernel/process.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 07424b075938..66255434128a 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -103,7 +103,7 @@ void cpu_idle(void)
103 * other cpus see our increasing idleness for the buddy 103 * other cpus see our increasing idleness for the buddy
104 * redistribution algorithm. -DaveM 104 * redistribution algorithm. -DaveM
105 */ 105 */
106 membar("#StoreStore | #StoreLoad"); 106 membar_storeload_storestore();
107 } 107 }
108} 108}
109 109