2 files changed, 10 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index c2b9dc4fce5d..22b5d2c459a3 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -368,7 +368,12 @@ interrupt_base:
 
         rlwimi  r11,r13,0,26,31         /* Insert static perms */
 
-        rlwinm  r11,r11,0,20,15         /* Clear U0-U3 */
+        /*
+         * Clear U0-U3 and WL1 IL1I IL1D IL2I IL2D bits which are added
+         * on newer 440 cores like the 440x6 used on AMCC 460EX/460GT (see
+         * include/asm-powerpc/pgtable-ppc32.h for details).
+         */
+        rlwinm  r11,r11,0,20,10
 
         /* find the TLB index that caused the fault.  It has to be here. */
         tlbsx   r10, 0, r10
diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index 21d248486479..70f4c833fa32 100644
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -568,6 +568,10 @@ htab_inval_old_hpte:
         ld      r7,STK_PARM(r9)(r1)     /* ssize */
         ld      r8,STK_PARM(r8)(r1)     /* local */
         bl      .flush_hash_page
+        /* Clear out _PAGE_HPTE_SUB bits in the new linux PTE */
+        lis     r0,_PAGE_HPTE_SUB@h
+        ori     r0,r0,_PAGE_HPTE_SUB@l
+        andc    r30,r30,r0
         b       htab_insert_pte
         
 htab_bail_ok: