Re: APIC error on CPUx

[Andi Kleen]

> "noapic" is a perfectly reasonable thing to use if you don't
> have a lot of interrupt sources and there is no more sharing
> in PIC mode than IOAPIC mode.

It makes interrupt handling much slower. The PIC accesses can be > 50% 
of the interrupt handling cost.

Of course that tends to hide some bugs.

-Andi
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