[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>

diff --git a/include/asm-x86_64/uaccess.h b/include/asm-x86_64/uaccess.h
index d5dbc87274f8f3e787aae826f0ae96deb508a8c2..c0eac519840b2d1d15a4c0751d20293649bbe9b0 100644 (file)
--- a/include/asm-x86_64/uaccess.h
+++ b/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)