Messages in this thread | | | Date | Thu, 4 Apr 2013 14:11:54 -0700 | Subject | Re: [PATCH v4] irq: add quirk for broken interrupt remapping on 55XX chipsets | From | Yinghai Lu <> |
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On Thu, Apr 4, 2013 at 1:33 PM, Bjorn Helgaas <bhelgaas@google.com> wrote: >> See my last email to Bjorn. Doing this in early-quirks in such a way that we >> can detect an iommu that has interrupt remapping enabled (so we don't just >> unilaterally print this quirk all the time) requires that we be able to parse >> acpi tables very early in the boot. If you know of how to do that, I can make >> this happen. If not, I suppose another alternative would be to have the early >> quirk set a flag that tells us this is a bogus chip, and if we try to enable irq >> remapping with that flag set, we should fail, and report the error at that time, >> but I'm not sure I like that solution. > > I like that solution :) It seems very simple -- you don't have to > parse any tables or anything.
You are right, we don't need to parse any acpi tables.
just add one quirk in early-quirk.c to set disable_irq_remap = 1;
Thanks
Yinghai
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