On Tue, 6 Aug 2002, Rusty Russell wrote:
>
> I am reading from this that we *should* be explicitly disabling
> preemption in interrupt handlers if we rely on the cpu number not
> changing underneath us, even if it's (a) currently unneccessary, and
> (b) arch-specific code.
But do_irq() already does that.
You mean _exception_ handlers. It's definitely not unnecessary. Exceptions
can very much be preempted.
Linus
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