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    SubjectRe: [RFC][PATCH] IO-APIC blacklist
    Date
    >   -uhci_hcd 0000:00:1f.2: irq 19, io base 0x0000ff80	 # slow
    > +uhci_hcd 0000:00:1f.2: irq 17, io base 0x0000ff80 # fine

    nope, this function is on on hardware IRQ 19 in both cases.

    it just looks like IRQ 17 in the ACPI case due to this:

    ACPI: PCI Interrupt 0000:00:1f.2[D] -> GSI 19 (level, low) -> IRQ 17

    Totally bogus? Yes.
    google "Kill IRQ compression"
    But while I truly hate this particular hack and I've wanted it gone for a long time,
    it doesn't appear to be related to the failure at hand -- it just makes
    it more irritating to debug.

    -Len
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