[patch] Cache error recovery
Similar to memory error recovery, when a cache error is consumed
by a user process terminate the user instead of crashing the system.
Signed-off-by: Russ Anderson (rja@xxxxxxx)
---
arch/ia64/kernel/mca_drv.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
Index: test/arch/ia64/kernel/mca_drv.c
===================================================================
--- test.orig/arch/ia64/kernel/mca_drv.c 2006-12-19 10:28:36.000000000 -0600
+++ test/arch/ia64/kernel/mca_drv.c 2006-12-19 10:33:32.393195202 -0600
@@ -602,6 +602,8 @@ recover_from_platform_error(slidx_table_
default:
break;
}
+ } else if (psp->cc && !psp->bc) { /* Cache error */
+ status = recover_from_read_error(slidx, peidx, pbci, sos);
}
return status;
@@ -688,11 +690,11 @@ recover_from_processor_error(int platfor
* The cache check and bus check bits have four possible states
* cc bc
* 0 0 Weird record, not recovered
- * 1 0 Cache error, not recovered
+ * 1 0 Cache error, attempt recovered
* 0 1 I/O error, attempt recovery
* 1 1 Memory error, attempt recovery
*/
- if (psp->bc == 0 || pbci == NULL)
+ if (psp->cc == 0 && (psp->bc == 0 || pbci == NULL))
return fatal_mca("No bus check");
/*
@@ -705,8 +707,6 @@ recover_from_processor_error(int platfor
*/
if (pbci->ib)
return fatal_mca("Internal Bus error");
- if (pbci->cc)
- return fatal_mca("Cache-cache error");
if (pbci->eb && pbci->bsi > 0)
return fatal_mca("External bus check fatal status");
--
Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc rja@xxxxxxx
-
To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|