On Thu, Oct 31, 2019 at 3:38 PM Samudrala, Sridhar <sridhar.samudrala@xxxxxxxxx> wrote: > > Alexei, Jakub > > Do you think it will be possible to avoid this overhead when mitigations are turned ON? yes > The other part of the overhead is going through the redirect path. > > Can i assume that your silence as an indication that you are now okay with optional bypass > flag as long as it doesn't effect the normal XDP datapath. If so, i will respin and submit > the patches against the latest bpf-next I'm still against it. Looks like the only motivation for it is extra overhead due to retpolines. imo it's not a good reason to introduce a bunch of extra code helping single kernel feature. We will have proper solution for indirect calls.
