Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24

[Daniel Walker]

On Tue, 2005-07-12 at 16:28 +0200, Ingo Molnar wrote:
> * Daniel Walker <dwalker@xxxxxxxxxx> 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.


I haven't tested it recently . This was on an older version of RT
though . I could try it if it's interesting ? Or do you think it's
already fixed?

Daniel

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