2 files changed, 10 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index b4bcf5a930fa..ebaedafc8e67 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -1518,6 +1518,15 @@ _GLOBAL(pmac_secondary_start)
         /* turn on 64-bit mode */
         bl      .enable_64b_mode
 
+        li      r0,0
+        mfspr   r3,SPRN_HID4
+        rldimi  r3,r0,40,23     /* clear bit 23 (rm_ci) */
+        sync
+        mtspr   SPRN_HID4,r3
+        isync
+        sync
+        slbia
+
         /* get TOC pointer (real address) */
         bl      .relative_toc
 
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 6b0711c15eca..bd8817b00fa4 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -53,7 +53,7 @@
 #include <asm/pmac_low_i2c.h>
 #include <asm/pmac_pfunc.h>
 
-#define DEBUG
+#undef DEBUG
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)