On Fri, Feb 07, 2003 at 10:29:16AM +0100, Vivien Chappelier wrote:
> On Thu, 6 Feb 2003, Jun Sun wrote:
>
> > Actually the following hunks are not right. ST_OFF
> > should be applied against the task_struct, which is a0,
> > not thread_info (t3).
>
> In 2.4 yes, not in 2.5.
>
You are right. I got misled. I thought task struct has 2 page
size and thread_info is allocated from slab. It should be reverse.
> include/linux/sched.h:469
> > union thread_union {
> > struct thread_info thread_info;
> > unsigned long stack[INIT_THREAD_SIZE/sizeof(long)];
> > };
>
> That means the top of the stack is actually at (task->thread_info +
> KERNEL_STACK_SIZE) in 2.5. See for example arch/mips64/kernel/ptrace.c:107
>
> > Also see my next email before you rush into trying :-)
>
> Ok, I'll look at it later.
>
It turns I made a rather stupid comment there as well. See it there. :-)
Jun
