On Tue, Nov 10, 2020 at 3:19 PM Marc Zyngier <maz@xxxxxxxxxx> wrote: > On 2020-11-10 14:02, Linus Walleij wrote: > >> Probably nothing more than setting the callback to > >> irq_chip_set_affinity_parent, > > > > Hm, is this something all GPIO irqchips used on SMP systems > > should be doing? Or just hierarchical ones? > > Probably only the hierarchical ones. I'd expect the non-hierarchical > GPIOs to be muxed behind a single interrupt, which makes it impossible > to move a single GPIO around, and moving the mux interrupt would break > userspace's expectations that interrupts move independently of each > others. I found two suspects and sent patches. I think I might have some more candidates down in pinctrl. I do have some hierarchical IRQ that is on UP systems, I suppose these are not affected. Yours, Linus Walleij
