Messages in this thread | | | Date | Thu, 27 May 2004 16:14:04 +0200 | From | Ingo Molnar <> | Subject | Re: Cleanups for APIC |
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* Maciej W. Rozycki <macro@ds2.pg.gda.pl> wrote:
> The I/O APIC need not be hooked to PCI ;-) -- I'm not sure about the > i82093AA, but that's definitely true for the i82489DX. The call to > io_apic_sync() is needed for masking to make sure interrupts won't be > dispatched after returning from the call -- this is not needed for > unmasking as a delay here is harmless.
well, an APIC message could be on the way to the CPU even with this synchronization. Does it matter whether it's a newly dispatched one due to POST delays or an in-fly one due to APIC bus delays?
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