> So PCI interrupts must always be level triggered? If so, then the kernel 
> should never program the IO APIC to use an edge triggered interrupt on a PCI 
> device. If that's true, then why not force the interrupt type to level 
> triggered for all PCI devices (to work around a potentially broken MP 
> table)?

Its not that simple. Its common to edge trigger some of the built in devices
like IDE controllers.

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