Re: 4.7 regression: ACPI: No IRQ available for PCI Interrupt Link [LNKD]. Try pci=noacpi or acpi=off

From: Rafael J. Wysocki
Date: Fri Sep 30 2016 - 17:05:01 EST


On Fri, Sep 30, 2016 at 10:24 PM, Sinan Kaya <okaya@xxxxxxxxxxxxxx> wrote:
> On 9/30/2016 3:39 PM, Rafael J. Wysocki wrote:
>>> how do we feel about increasing the ISA IRQ range to 256 so that
>>> > we are safe for all SCI interrupts?
>> I'm not sure how this is related to the problem at hand. Care to elaborate?
>>
>
> Sure, let me explain.
>

[cut]

>
> I hope it makes sense now. I tend to skip details sometimes. Feel free to
> send more questions.

Thanks for the information!

IIUC, basically, what you are proposing would be to restore the old
penalizing method for IRQs in the 0-255 range and use the new approach
for the rest, right?

What's the drawback, if any?

Thanks,
Rafael