Re: Perhaps a side effect regarding NMI returns
From: Andi Kleen
Date: Tue Nov 29 2011 - 16:29:01 EST
> I'm curious to what remote events can be set by an NMI that wont take
> affect in what the NMI interrupted. I would think that NMIs should be
> treated as if they didn't exist, because they should not be calling
> anything that sets NEED_RESCHED or grabbing locks and such.
Hmm, i thought there were cases where we checked if it was in
kernel mode instead of IPIng, and assume the check is done when
returning.
But cannot come up with a concrete example right now. It may have
been wrong. Or I forgot it :)
You're right anything with interrupts should be fine because
it's just blocked.
-Andi
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