Re: [REGRESSION from 2.6.23-rc8]

From: Thomas Gleixner
Date: Fri Sep 28 2007 - 11:10:30 EST

On Fri, 2007-09-28 at 11:07 -0400, Chuck Ebbert wrote:
> On 09/26/2007 06:35 PM, Thomas Gleixner wrote:
> > It's even worse than I thought on the first check:
> >
> > "noapictimer" on the command line of an SMP box prevents _ONLY_ the boot
> > CPU apic timer from being used. But the secondary CPU is still
> > unconditionally setting up the APIC timer and uses the non calibrated
> > variable calibration_result, which is of course 0, to setup the APIC
> > timer. Wreckage guaranteed.
> >
> Is this why I get 1000 spurious interrupts/second on IRQ7 when booting
> x86_64 with "noapic"?

No, thats a different problem. The wreckage is a stuck local apic timer


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