On Wed, May 20, 2020 at 09:20:50AM -0600, Jens Axboe wrote: > Just checked, and it works fine for me. If I create an SQPOLL ring with > SQ_AFF set and bound to CPU 3, if CPU 3 goes offline, then the kthread > just appears unbound but runs just fine. When CPU 3 comes online again, > the mask appears correct. > > So don't think there's anything wrong on that side. The affinity is a > performance optimization, not a correctness issue. Really not much we > can do if the chosen CPU is offlined, apart from continue to chug along. Ok, that sounds pretty sensible.
