powerpc/mm: Remove pte_val usage for the second half of pgtable_t

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/book3s/64/hash-64k.h

@@ -61,6 +61,7 @@
 static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
 {
 	real_pte_t rpte;
+	unsigned long *hidxp;
 
 	rpte.pte = pte;
 	rpte.hidx = 0;
@@ -70,7 +71,8 @@ static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
 		 * check. The store side ordering is done in __hash_page_4K
 		 */
 		smp_rmb();
-		rpte.hidx = pte_val(*((ptep) + PTRS_PER_PTE));
+		hidxp = (unsigned long *)(ptep + PTRS_PER_PTE);
+		rpte.hidx = *hidxp;
 	}
 	return rpte;
 }

arch/powerpc/mm/hash64_64k.c

@@ -218,7 +218,6 @@ repeat:
 	 * nobody is undating hidx.
 	 */
 	hidxp = (unsigned long *)(ptep + PTRS_PER_PTE);
-	/* __real_pte use pte_val() any idea why ? FIXME!! */
 	rpte.hidx &= ~(0xfUL << (subpg_index << 2));
 	*hidxp = rpte.hidx  | (slot << (subpg_index << 2));
 	new_pte = mark_subptegroup_valid(new_pte, subpg_index);