On Fri, Feb 19, 2021 at 09:20:18AM +0100, Greg Kroah-Hartman wrote: > Ok, can you step back and try to explain what problem you are trying to > solve first, before getting bogged down in odd details? I find it > highly unlikely that this is something "unique", but I could be wrong as > I do not understand what you are wanting to do here at all. We want to add two new sysfs files: sriov_vf_total_msix, for PF devices sriov_vf_msix_count, for VF devices associated with the PF AFAICT it is *acceptable* if they are both present always. But it would be *ideal* if they were only present when a driver that implements the ->sriov_get_vf_total_msix() callback is bound to the PF.