diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index ad253b959030..e935edd6b72b 100644
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -331,7 +331,7 @@ htab_pte_insert_failure:
  *****************************************************************************/
 
 /* _hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
- *		 pte_t *ptep, unsigned long trap, int local)
+ *		 pte_t *ptep, unsigned long trap, int local, int ssize)
  */
 
 /*
@@ -557,7 +557,8 @@ htab_inval_old_hpte:
 	mr	r4,r31			/* PTE.pte */
 	li	r5,0			/* PTE.hidx */
 	li	r6,MMU_PAGE_64K		/* psize */
-	ld	r7,STK_PARM(r8)(r1)	/* local */
+	ld	r7,STK_PARM(r9)(r1)	/* ssize */
+	ld	r8,STK_PARM(r8)(r1)	/* local */
 	bl	.flush_hash_page
 	b	htab_insert_pte
 	
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index c78dc912411f..c5a603fdb22d 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -791,8 +791,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 	}
 	if (user_region) {
 		if (psize != get_paca()->context.user_psize) {
-			get_paca()->context.user_psize =
-				mm->context.user_psize;
+			get_paca()->context = mm->context;
 			slb_flush_and_rebolt();
 		}
 	} else if (get_paca()->vmalloc_sllp !=
@@ -885,6 +884,9 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 	local_irq_restore(flags);
 }
 
+/* WARNING: This is called from hash_low_64.S, if you change this prototype,
+ *          do not forget to update the assembly call site !
+ */
 void flush_hash_page(unsigned long va, real_pte_t pte, int psize, int ssize,
 		     int local)
 {