From: Kevin Hao <haokexin@gmail.com>
Date: Sat, 11 May 2013 23:26:23 +0000 (+0800)
Subject: powerpc: Use patch_exception to update the debug exception handler
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=565c2f249a0cb549d419f4c92fb8642b404d42b5;p=deliverable%2Flinux.git

powerpc: Use patch_exception to update the debug exception handler

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 4085aaa9478f..5760b9bea936 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -520,9 +520,6 @@ static void __init irqstack_early_init(void)
 #ifdef CONFIG_PPC_BOOK3E
 static void __init exc_lvl_early_init(void)
 {
-	extern unsigned int interrupt_base_book3e;
-	extern unsigned int exc_debug_debug_book3e;
-
 	unsigned int i;
 
 	for_each_possible_cpu(i) {
@@ -535,8 +532,7 @@ static void __init exc_lvl_early_init(void)
 	}
 
 	if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
-		patch_branch(&interrupt_base_book3e + (0x040 / 4) + 1,
-			     (unsigned long)&exc_debug_debug_book3e, 0);
+		patch_exception(0x040, exc_debug_debug_book3e);
 }
 #else
 #define exc_lvl_early_init()