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    SubjectRe: [PATCH UPDATE] deflate stack usage in lib/inflate.c
    Jeremy Fitzhardinge wrote:
    > 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.
    >

    Yeah, the do_IRQ thing is misleading because it makes you think the
    interrupt caused an overflow when all it did was detect a
    near-overflow condition. (The number printed is the amount of space
    left.)
    -
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