s390/page: use register pair instead of register asm

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index cc98f9b..2d83e2c 100644 (file)
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -55,13 +55,16 @@ static inline void storage_key_init_range(unsigned long start, unsigned long end
  */
 static inline void copy_page(void *to, void *from)
 {
-       register void *reg2 asm ("2") = to;
-       register unsigned long reg3 asm ("3") = 0x1000;
-       register void *reg4 asm ("4") = from;
-       register unsigned long reg5 asm ("5") = 0xb0001000;
+       union register_pair dst, src;
+
+       dst.even = (unsigned long) to;
+       dst.odd  = 0x1000;
+       src.even = (unsigned long) from;
+       src.odd  = 0xb0001000;
+
        asm volatile(
-               "       mvcl    2,4"
-               : "+d" (reg2), "+d" (reg3), "+d" (reg4), "+d" (reg5)
+               "       mvcl    %[dst],%[src]"
+               : [dst] "+&d" (dst.pair), [src] "+&d" (src.pair)
                : : "memory", "cc");
 }