Re: [tip: irq/core] x86: Select HARDIRQS_SW_RESEND on x86

Linus Walleij
2020-03-12T14:03:03Z

On Thu, Mar 12, 2020 at 2:49 PM Hans de Goede <hdegoede@redhat.com> wrote:

[Me]
> > I see that ARM and ARM64 simply just select this. What
> > happens if you do that and why is x86 not selecting it in general?
>
> Erm, "selecting it in general" (well at least on x86) is what
> this patch is doing.

Sorry that I was unclear, what I meant to say is why wasn't
this done ages ago since so many important architectures seem
to have it enabled by default.

I suppose the reason would be something like "firmware/BIOS
should handle that for us" and recently that has started to
break apart and x86 platforms started to be more like ARM?

Yours,
Linus Walleij