1 files changed, 4 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a902723fdc69..076d1242507a 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -399,7 +399,8 @@ static inline int __set_dabr(unsigned long dabr, unsigned long dabrx)
 static inline int __set_dabr(unsigned long dabr, unsigned long dabrx)
 {
         mtspr(SPRN_DABR, dabr);
-        mtspr(SPRN_DABRX, dabrx);
+        if (cpu_has_feature(CPU_FTR_DABRX))
+                mtspr(SPRN_DABRX, dabrx);
         return 0;
 }
 #else
@@ -1368,7 +1369,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
 
 #ifdef CONFIG_PPC64
 /* Called with hard IRQs off */
-void __ppc64_runlatch_on(void)
+void notrace __ppc64_runlatch_on(void)
 {
         struct thread_info *ti = current_thread_info();
         unsigned long ctrl;
@@ -1381,7 +1382,7 @@ void __ppc64_runlatch_on(void)
 }
 
 /* Called with hard IRQs off */
-void __ppc64_runlatch_off(void)
+void notrace __ppc64_runlatch_off(void)
 {
         struct thread_info *ti = current_thread_info();
         unsigned long ctrl;