On Mon, Sep 23, 2024 at 12:01:40PM -0300, Jason Gunthorpe wrote: > On Mon, Sep 23, 2024 at 10:49:07AM +0200, Danilo Krummrich wrote: > > > 2. Proposal for upstream > > > ======================== > > > > What is the strategy in the mid / long term with this? > > > > As you know, we're trying to move to Nova and the blockers with the device / > > driver infrastructure have been resolved and we're able to move forward. Besides > > that, Dave made great progress on the firmware abstraction side of things. > > > > Is this more of a proof of concept? Do you plan to work on Nova in general and > > vGPU support for Nova? > > This is intended to be a real product that customers would use, it is > not a proof of concept. There is alot of demand for this kind of > simplified virtualization infrastructure in the host side. I see... > The series > here is the first attempt at making thin host infrastructure and > Zhi/etc are doing it with an upstream-first approach. This is great! > > From the VFIO side I would like to see something like this merged in > nearish future as it would bring a previously out of tree approach to > be fully intree using our modern infrastructure. This is a big win for > the VFIO world. > > As a commercial product this will be backported extensively to many > old kernels and that is harder/impossible if it isn't exclusively in > C. So, I think nova needs to co-exist in some way. We'll surely not support two drivers for the same thing in the long term, neither does it make sense, nor is it sustainable. We have a lot of good reasons why we decided to move forward with Nova as a successor of Nouveau for GSP-based GPUs in the long term -- I also just held a talk about this at LPC. For the short/mid term I think it may be reasonable to start with Nouveau, but this must be based on some agreements, for instance: - take responsibility, e.g. commitment to help with maintainance with some of NVKM / NVIDIA GPU core (or whatever we want to call it) within Nouveau - commitment to help with Nova in general and, once applicable, move the vGPU parts over to Nova But I think the very last one naturally happens if we stop further support for new HW in Nouveau at some point. > > Jason >
