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

5ad0d383 · Roland McGrath <[email protected]> · 2007-01-25 17:19:51 -08:00

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 <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 5ad0d383ddbf0d2fce43b8aac267a6c299fd2dff
Parents: 99abfeaf

Changes

1 files changed · +1 −1

File	Status	Add	Del	Content
include/asm-x86_64/uaccess.h	modified	+1	−1	View file

include/asm-x86_64/uaccess.h

View file

diff --git a/include/asm-x86_64/uaccess.h b/include/asm-x86_64/uaccess.h
index d5dbc87..c0eac51 100644
--- 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)