On 2020-11-10 14:02, Linus Walleij wrote:
On Thu, Nov 5, 2020 at 4:43 PM Marc Zyngier <maz@xxxxxxxxxx> wrote:
On 2020-11-05 15:23, Daniel Palmer wrote:
> On Thu, 5 Nov 2020 at 21:08, Marc Zyngier <maz@xxxxxxxxxx> wrote:
> > I see that msc313_gpio_irqchip doesn't have a
>> .irq_set_affinity callback. Is this system UP only?
>
> What is in mainline right now is UP only but there are chips with a
> second cortex A7 that I have working in my tree.
> So I will add that in for v3 if I can work out what I should actually
> do there. :)
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.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
