On Thu, 2017-11-30 at 15:20 +1100, David Gibson wrote: > > > > This isn't at the top of my priority list to figure out the solution, > > > > so whoever implements it will need to provide justification as they > > > > move down the list from more to less preferred solutions. Thanks, > > > > > > I am trying... I was really counting on you guys having this discussed in > > > Prague :( > > > > Should have been there to push your agenda... Thanks, > > We discussed it briefly, BenH seemed to think there wasn't a big > difficulty, IIRC, which is why we didn't spend much time on this > (compared to the other issues). So, talk to him. Well, first we established that this wasn't an issue for KVM, so the importance/urgency went down. It's still useful for DPDK. Then we discussed quickly the various options, none of them is particularily *difficult* as in the implementation is rather trivial, the question is to chose which interface to provide userspace. I don't have a strong opinion there. The mm guys might object to hijacking MAP_NONBLOCK, otherwise that seems like the best approach, so we should run that past them. Cheers, Ben.
