Re: IO-APIC on nforce2 [PATCH]

[Zwane Mwaikambo]

On Tue, 13 Apr 2004, Len Brown wrote:

> Re: IRQ0 XT-PIC timer issue
>
> Since the hardware is connected to APIC pin0, it is a BIOS bug
> that an ACPI interrupt source override from pin2 to IRQ0 exists.
>
> With this simple 2.6.5 patch you can specify "acpi_skip_timer_override"
> to ignore that bogus BIOS directive.  The result is with your
> ACPI-enabled APIC-enabled kernel, you'll get IRQ0 IO-APIC-edge timer.
>
> Probably there is a more clever way to trigger this workaround
> automatcially instead of via boot parameter.

Nice, this is the problem which broke Andrew's and the systems i tested
my adaptation of Natalie's mp_override_legacy_irq() change. Whacking out
previous mp_irq entries would have worked if the BIOS had not forced the
pin2 override.
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