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SubjectRe: Recoverable MCA interrupts from NMI handlers? IPMI and RCU?
Corey Minyard wrote:
> If you mean the IPMI driver, it does not tie into any SMI. It
> theoretically could since there's a bit for that in the watchdog timer,
> but there's been no demand and I haven't looked at it. I guess it would
> be better than an NMI.
>
> If it did tie in, it would most likely just panic to get useful
> information out before the watchdog reset the system.

The main reason I could see wanting to use SMI would be as a debugging
tool, since SMI makes the entire state of the system available at a low
level; however, trying to interact with the state of the kernel at this
priority level seems beyond the pale in terms of complexity.

-hpa


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