Re: [PATCH] genirq/manage: Reduce priority of forced secondary IRQ handler
From: Crystal Wood
Date: Fri Oct 03 2025 - 14:26:07 EST
On Sun, 2025-09-21 at 15:12 +0200, Lukas Wunner wrote:
> On Sat, Sep 20, 2025 at 11:20:26PM +0200, Thomas Gleixner wrote:
> > I obviously understand that the proposed change squashs the whole class
> > of similar (not yet detected) issues, but that made me look at that
> > particular instance nevertheless.
> >
> > All aer_irq() does is reading two PCI config words, writing one and then
> > sticking 64bytes into a KFIFO. All of that is hard interrupt safe. So
> > arguably this AER problem can be nicely solved by the below one-liner,
> > no?
>
> The one-liner (which sets IRQF_NO_THREAD) was what Crystal originally
> proposed:
>
> https://lore.kernel.org/r/20250902224441.368483-1-crwood@xxxxxxxxxx/
So, is the plan to apply the original patch then?
Thanks,
Crystal