Messages in this thread |  | | Date | Mon, 20 Nov 2006 20:03:29 +0300 | From | Sergei Shtylyov <> | Subject | Re: [PATCH] 2.6.18-rt7: PowerPC: fix breakage in threaded fasteoi type IRQ handlers |
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Hello.
Ingo Molnar wrote:
>>>on PPC64, 'get the vector' initiates an ACK as well - is that done >>>before handle_irq() is done?
>> Exactly. How else do_IRQ() would know the vector?
> the reason i'm asking is that in this case masking is a bit late at this > point and there's a chance for a repeat interrupt.
How's that? Acknowledge != EOI on OpenPIC (as well as 8259). Acknoledging sets the bit in the in-service register preventing all the interrupts with same or lower prioriry from being accepted.
> Ingo
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