[patch 1/4] Kprobes support for IA64

[Lynch, Rusty]

>From: Keith Owens [mailto:kaos@sgi.com]
>Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> wrote:
>>
>>This patch adds the kdebug die notification mechanism needed by
Kprobes.
>> 	      case 0: /* unknown error (used by GCC for
__builtin_abort()) */
>>+		if (notify_die(DIE_BREAK, "kprobe", regs, break_num,
>TRAP_BRKPT, SIGTRAP)
>>+			       	== NOTIFY_STOP) {
>>+			return;
>>+		}
>> 		die_if_kernel("bugcheck!", regs, break_num);
>> 		sig = SIGILL; code = ILL_ILLOPC;
>> 		break;
>
>Nit pick.  Any break instruction in a B slot will set break_num 0, so
>you cannot tell if the break was inserted by kprobe or by another
>debugger.  Setting the string to "kprobe" is misleading here, change it
>to "break 0".

Good catch.  We'll update the informational string.

    --rusty