Andi Kleen wrote:
>> (This was under Xen, but there's no reason it couldn't happen on bare
>> hardware.)
>>
>
> Hmm, does Xen perhaps not use interrupt stacks?
Looks like that's all done in do_IRQ, so it should be independent of
whether its Xen or not. And the stack overflow check is performed on
the main stack, before switching to the interrupt stack.
J
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