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

[Andi Kleen]

John Keller <jpk@xxxxxxx> 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
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