Messages in this thread |  | | | Date | Thu, 18 Jun 2009 12:14:40 -0700 | | From | Jeremy Fitzhardinge <> | | Subject | Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC |
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On 06/18/09 09:08, Len Brown wrote: >> In principle, the local APIC and the I/O APIC are distinct (but related) >> components, which can be independently present. >> > > bzzzzt, but thanks for playing:-) >
Perhaps I should have expressed that a bit more clearly: you could, if mad, build a machine with I/O APICs and some other mechanism for delivering the interrupts to CPUs. In practice, I doubt anyone ever has, or ever would.
The only actual exception I know of is Xen's replacement of the physical local APIC with a paravirtualized interrupt interface.
J
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