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SubjectRe: [RFC][PATCH] irq_work
> True, but I really don't like the softirq thing, and I really don't care
> about !APIC machines, I probably couldn't buy one if I wanted to and its
> not like we have good MCE support for them now, so who cares.

In theory you can run a machine with good MCE support in non APIC single
CPU mode. It wouldn't make much sense, but you could do it.

Anyways, I don't think we need a lot of effort to handle this case,
but it would be better to not explicitely break it either.

That's why the timer fallback in the original code was fine, this
basically never happens and even if there is a 5s delay from tickless
that's fine.

-- -- Speaking for myself only.

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