RE: Re: "oneshot" interrupt causes another interrupt to be fired erroneously in Haswell system

[Kar Hin Ong]

> > The workarounds for this are enabled by PCI quirls and either
> > CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y or 'ioapicreroute' on
> the
> > command line.
> >
> > It might be wortha try to add the PCI ID of that box to the quirk
> > list, i.e. the PCI ID matches in drivers/pci/quirks.c which belong to
> > the
> > function: quirk_reroute_to_boot_interrupts_intel().
> 
> Do you mean adding the PCI ID of the device that actually fires interrupt? It
> can be any PCI card though (example: external ETH controller, data
> acquisition module, etc).
> Or you mean to add the ID of all PCIe root ports that routed to IOAPIC 2?
> 
> Based on Haswell specification, seems like every entry on IOAPIC 2 will
> experience this problem.
> If to reroute every entry on IOAPIC 2 to IOAPIC 1, probably we should just
> disable IOAPIC 2 instead?

Hi Thomas, Bjorn, 
Any thoughts on this?

Thanks.
Kar Hin Ong