On Thu, 15 Feb 2007, Ingo Molnar wrote:
> +ENTRY(async_thread_helper)
> + CFI_STARTPROC
> + /*
> + * Allocate space on the stack for pt-regs.
> + * sizeof(struct pt_regs) == 64, and we've got 8 bytes on the
> + * kernel stack already:
> + */
> + subl $64-8, %esp
> + CFI_ADJUST_CFA_OFFSET 64
Maybe a comment here would help in explaining why we do need space for the
extra pt_regs (on top of the one already allocated in do_fork()) ;)
It's not immediately clear that ret_from_fork and syscall_exit will issue
two nested RESTORE_REGS.
- Davide
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