[PATCH] x86_64: fix put_user for 64-bit constant

On x86-64, a put_user call using a 64-bit pointer and a constant value that
is > 0xffffffff will produce code that doesn't assemble.  This patch fixes
the asm construct to use the Z constraint for 32-bit constants.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-x86_64/uaccess.h

@@ -157,7 +157,7 @@ do {									\
 	  case 1: __put_user_asm(x,ptr,retval,"b","b","iq",-EFAULT); break;\
 	  case 2: __put_user_asm(x,ptr,retval,"w","w","ir",-EFAULT); break;\
 	  case 4: __put_user_asm(x,ptr,retval,"l","k","ir",-EFAULT); break;\
-	  case 8: __put_user_asm(x,ptr,retval,"q","","ir",-EFAULT); break;\
+	  case 8: __put_user_asm(x,ptr,retval,"q","","Zr",-EFAULT); break;\
 	  default: __put_user_bad();					\
 	}								\
 } while (0)