Modify Data storage exception code to first lookout for a DABR match before
recognising a kprobe or xmon exception.
Signed-off-by: K.Prasad <pra...@linux.vnet.ibm.com>
---
arch/powerpc/mm/fault.c | 14 -
Index: linux-2.6-tip.hbkpt/arch/powerpc/mm/fault.c
===================================================================
--- linux-2.6-tip.hbkpt.orig/arch/powerpc/mm/fault.c 2009-05-14
00:17:24.000000000 +0530
+++ linux-2.6-tip.hbkpt/arch/powerpc/mm/fault.c 2009-05-14 00:58:05.000000000
+0530
@@ -137,6 +137,12 @@
error_code &= 0x48200000;
else
is_write = error_code & DSISR_ISSTORE;
+
+ if (error_code & DSISR_DABRMATCH) {
+ /* DABR match */
+ do_dabr(regs, address, error_code);
+ return 0;
+ }
#else
is_write = error_code & ESR_DST;
#endif /* CONFIG_4xx || CONFIG_BOOKE */
@@ -151,14 +157,6 @@
if (!user_mode(regs) && (address >= TASK_SIZE))
return SIGSEGV;
-#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
- if (error_code & DSISR_DABRMATCH) {
- /* DABR match */
- do_dabr(regs, address, error_code);
- return 0;
- }
-#endif /* !(CONFIG_4xx || CONFIG_BOOKE)*/
-
if (in_atomic() || mm == NULL) {
if (!user_mode(regs))
return SIGSEGV;
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