> >> Christoph, Sagi: it seems you think /proc/irq/$IRP/smp_affinity > >> shouldn't be allowed if drivers support managed affinity. Is that correct? > > > > Not just shouldn't, but simply can't. > > > >> But as it stands, things are just plain borked if an rdma driver > >> supports ib_get_vector_affinity() yet the admin changes the affinity via > >> /proc... > > > > I think we need to fix ib_get_vector_affinity to not return anything > > if the device doesn't use managed irq affinity. > > Steve, does iw_cxgb4 use managed affinity? > > I'll send a patch for mlx5 to simply not return anything as managed > affinity is not something that the maintainers want to do. I'm beginning to think I don't know what "managed affinity" actually is. Currently iw_cxgb4 doesn't support ib_get_vector_affinity(). I have a patch for it, but ran into this whole issue with nvme failing if someone changes the affinity map via /proc. Steve.
