diff --git a/[refs] b/[refs]
index 9691d5af19fa..36b3cd696aac 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b5f9b6665b70b4c844bed5452f6a14743eefa57c
+refs/heads/master: 8f4da26e9bf89f54b68d5cc3f3596f45e5f43911
diff --git a/trunk/arch/powerpc/kernel/setup_64.c b/trunk/arch/powerpc/kernel/setup_64.c
index ce6f61c6f871..5a0401fcaebd 100644
--- a/trunk/arch/powerpc/kernel/setup_64.c
+++ b/trunk/arch/powerpc/kernel/setup_64.c
@@ -437,8 +437,8 @@ static void __init irqstack_early_init(void)
 	unsigned int i;
 
 	/*
-	 * interrupt stacks must be under 256MB, we cannot afford to take
-	 * SLB misses on them.
+	 * Interrupt stacks must be in the first segment since we
+	 * cannot afford to take SLB misses on them.
 	 */
 	for_each_possible_cpu(i) {
 		softirq_ctx[i] = (struct thread_info *)