Re: [PATCH 0/4]: Respin local_irq_*_nmi() stuff.

From: David Miller
Date: Tue Apr 13 2010 - 04:46:33 EST


From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Tue, 13 Apr 2010 10:37:14 +0200

> Hmm, it also assumes %pil is never anything other than 0,
> PIL_NORMAL_MAX, PIL_NMI, because if:
>
> (%pil & 1) && (%pil != PIL_NMI)
>
> then you'll end up disabling NMIs. Could something like that ever
> happen?

The only values we ever program into the %pil are 0, PIL_NORMAL_MAX
and PIL_NMI

Since PIL_NMI is the largest %pil value and all bits are set in it
(0xf), it doesn't matter what PIL_NORMAL_MAX actually is.

Yes this all deserves a comment, I'll add one, thanks for pointing
that out.
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