[POWERPC] Make setjmp/longjmp code usable outside of xmon

This makes the setjmp/longjmp code used by xmon, generically available
to other code.  It also removes the requirement for debugger hooks to
be only called on 0x300 (data storage) exception.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 10dda224a361..7b2510799266 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -167,10 +167,8 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
         if (notify_page_fault(regs))
                 return 0;
 
-        if (trap == 0x300) {
-                if (debugger_fault_handler(regs))
-                        return 0;
-        }
+        if (unlikely(debugger_fault_handler(regs)))
+                return 0;
 
         /* On a kernel SLB miss we can only check for a valid exception entry */
         if (!user_mode(regs) && (address >= TASK_SIZE))