OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[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>
This commit is contained in:
Roland McGrath 2007-01-25 17:19:51 -08:00 committed by Linus Torvalds
parent 99abfeafb5
commit 5ad0d383dd
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/asm-x86_64/uaccess.h
View File

@ -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)