Ar Iau, 2006-10-19 am 11:23 -0500, ysgrifennodd mfbaustx:
> So... I know that there is some small-ish amount of kernel stack space
> available per-process, and the kernel uses this area when executing on a
> process's behalf (system call, etc). Let's say I allocate (via an
> automatic/stack-based storage) some smallish structure which I want a
> kernel thread to populate (or interrupt context... some context other than
> my process's context).
>
> If my process gets context swapped, is my kernel-based stack pointer
> always valid?
Have a look how the kernel sleep/wakeup system work. We rely on the
property that the kernel stacks of tasks don't move nor do they get
swapped out.
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