[PATCH] powerpc: Nicer printing of address at oops
Add nicer printing of faulting address on unresolvable kernel faults.
Makes life a little easier for those who don't know how to decode our
register contents at oops time.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 841d8b6..93d4fbf 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -389,5 +389,22 @@
}
/* kernel has accessed a bad area */
+
+ printk(KERN_ALERT "Unable to handle kernel paging request for ");
+ switch (regs->trap) {
+ case 0x300:
+ case 0x380:
+ printk("data at address 0x%08lx\n", regs->dar);
+ break;
+ case 0x400:
+ case 0x480:
+ printk("instruction fetch\n");
+ break;
+ default:
+ printk("unknown fault\n");
+ }
+ printk(KERN_ALERT "Faulting instruction address: 0x%08lx\n",
+ regs->nip);
+
die("Kernel access of bad area", regs, sig);
}