Re: [RFC PATCH] Documentation: Add managed interrupts

[Sebastian Andrzej Siewior]

On 2026-04-11 20:18:17 [+0800], Ming Lei wrote:
> > +CPUs listed in the avoided mask remain part of the interrupt’s affinity mask.
> > +This means that if all non‑isolated CPUs go offline while isolated CPUs remain
> > +online, the interrupt will be assigned to one of the isolated CPUs.
> 
> Maybe you can add:
> 
> In reality it is fine because IO isn't supposed to submit from isolated CPUs.

You can argue both way. And I have some vague memory that block will
schedule kworker and there was some work to use unbound worker instead
of _this_ CPU. I just don't know what happens with interrupt and this is
probably the one thing you can't configure.

Sebastian