Hi,

Linus noticed that put_user doesn't to the manual page table lookup that 
is required for cpus without a working WP flag. The solution is simple: 
if CONFIG_X86_WP_WORKS_OK is not set, then the put_user macros must call 
__copy_to_user_ll(). That function contains the required checks.
This is already implemented for __put_user_size(), somehow I overlooked 
__put_user_{1,2,4,8,X}.

What do you think?
Patch against 2.6.11-mm2, test booted with bochs.

--
    Manfred