Re: [git Patch 1/1] avoid IRQ0 ioapic pin collision

Sergio Monteiro Basto
2006-04-23T04:59:57Z

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On Thu, 2006-04-20 at 19:14 -0400, Kimball Murray wrote:
> Our system uses an ACPI Interrupt Source Override to inform the OS
> that the
> 8254 timer (IRQ0) is on pin 1 of the ioapic. On that same ioapic, pin
> 0
> handles an interrupt from a PCI device. The work-around for the VIA
> chipset
> now causes pin 0 to get IRQ0 on our platform, which the timer also
> claims.
> The sad result is both pins 0 and 1 drive IRQ0, but pins 0 and 1 have
> different triggering characterists (and polarity), so time learches
> forward
> in an IRQ0 interrupt storm.

And how I now if my via motherboard suffers this problem ?

Could be something like this messages :
Losing some ticks... checking if CPU frequency changed.

Thanks,
--
Sérgio M. B.

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