On Thu, 12 Feb 2026 at 11:29, Eelco Chaudron <[email protected]> wrote: > > I don't know how common that is. The con to have it is that having many > > knobs, that almost nobody uses is an overhead to maintain etc. > > > > I just thought that such users have to do some change (either this knob or > > the "trick"), they can just do that and keep this old (bad) behavior only > > for their scope. > > Wouldn't it be convenient to have a DPDK option to not probe any bus? This > would solve the workarounds cleanly.
Well, that's what I'd like to see too. But we just bumped DPDK and have to wait until the next LTS for such a change to go in DPDK. So for now, we must live with existing API. > > Also, will we be creating any problems for existing users? i.e. do all > currently supported drivers support hotplug? Let's imagine we are in the future, and we have a way to disable all initial probing DPDK. As far as the PCI drivers RHEL supports downstream, hotplug is supported (and indirectly tested via multiple restarts). Some drivers (or buses) may still be buggy, and that would be something for DPDK to fix. But then the knob makes it possible to save the day. And there may still be some strange usecases that hit an issue (so the option to restore the legacy behavior would also help). You can argue that then we should not take the risk to change the default behavior, that's what legacy is always about. Though I think this behavior is ugly and should have been questionned when adding DPDK support in OVS in the first place :-). -- David Marchand _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
