> On Mon, 13 Jul 1998, Linus Torvalds wrote:
>
> >Oh, having separate interrupt stacks _works_, and on some architectures it
>
> I hacked irq.c and now seems to work on Linux too ;-).
[...]
This does not seem to handle nested interrupts correctly. A nested IRQ
will overwrite its own stack. Also I think per-IRQ stacks are overkill,
a per-CPU interrupt stack is enough. You can make this stack bigger if you
worry about nested interrupts.
This would also have the benefit of increased cache locality.
-Andi
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