Re: [PATCH] - Add IOAPIC NMI support on x86_64

Andi Kleen
2007-06-18T23:48:40Z

John Keller <jpk@sgi.com> writes:

> Add support for IOAPIC NMI interrupts on x86_64.
>
> Changes include the following:
>
> - Obtain the NMI IOAPIC info via an ACPI NMI SRC structure that is
> part of the MADT, and program the IOAPIC redirection register.
> The NMI SRC struct will contain the GSI of the NMI interrupt.
>
> - Setup irq_desc[] and irq_2_pin[] entries for the NMI interrupt irq,
> which will be used by the generic mask/unmask routines. This will
> allow a driver to enable/disable the NMI interrupt via
> enable/disable_irq().

What's the motivation for this patch?

-Andi