Re: [PATCH] Prevent nested interrupts when the IRQ stack is near overflowing v2

Andi Kleen
2010-03-25T18:27:10Z

> I think the patch as posted solves a real problem, but also perpetuates a bad
> situation.
>
> At minimum we should print a (one-time) warning that some badness occured.
> That would push us either in the direction of improving drivers, or towards
> improving the generic code.

What should a driver do to prevent that? I don't see what it could do
short of castrating itself (like refusing to use multiple ports)
As Linus says the driver doesn't know if setting IRQF_DISABLED is safe.

-Andi
--
ak@linux.intel.com -- Speaking for myself only.