Re: "irq/matrix: Spread interrupts on allocation" breaks nouveau in mainline kernel

From: Thomas Gleixner
Date: Wed Jan 24 2018 - 07:52:23 EST


On Tue, 23 Jan 2018, Lyude Paul wrote:

> JFYI: I confirmed this patch is definitely broken. I'm seeing nouveau get
> assigned the same MSI vector as another device on the system, which would
> explain why interrupts suddenly stop working. I'll keep looking into it further
> tomorrow.

How did you determine that it is the same MSI vector as another device?

Thanks,

tglx