Messages in this thread | | | Date | Tue, 12 Jul 2005 18:01:50 +0200 | From | Ingo Molnar <> | Subject | Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24 |
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* K.R. Foley <kr@cybsft.com> wrote:
> Ingo Molnar wrote: > >* Daniel Walker <dwalker@mvista.com> wrote: > > > > > >>I observed a situation on a dual xeon where IOAPIC_POSTFLUSH , if on, > >>would actually cause spurious interrupts. It was odd cause it's > >>suppose to stop them .. If there was a lot of interrupt traffic on one > >>IRQ , it would cause interrupt traffic on another IRQ. This would > >>result in "nobody cared" messages , and the storming IRQ line would > >>get shutdown. > >> > >>This would only happen in PREEMPT_RT . > > > > > >does it happen with the latest kernel too? There were a couple of things > >broken in the IOAPIC code in various earlier versions. > > > > Ingo > > Is this why I have been able to boot the latest versions without the > noapic option (and without noticeable keyboard repeat problems) or has > it just been dumb luck?
yes, i think it's related - the IO-APIC code is now more robust than ever, and that's why any known-broken system would be important to re-check.
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