On Tue 16-01-18 21:05:02, Jerome Glisse wrote: > On Wed, Jan 17, 2018 at 09:19:56AM +0800, Liubo(OS Lab) wrote: > > On 2018/1/17 5:30, Jerome Glisse wrote: > > > I want to talk about status of HMM and respective upstream user for > > > it and also talk about what's next in term of features/improvement > > > plan (generic page write protection, mmu_notifier, ...). Most likely > > > > I don't think we should consider to push more code to upstream for a nobody-use feature. > > > > AFAIR, Michal also mentioned that HMM need a real user/driver before upstream. > > But I haven't seen a workable user/driver version. > > > > Looks like HMM is a custom framework for Nvidia, and Nvidia would not like to open source its driver. > > Even if nvidia really use HMM and open sourced its driver, it's probably the only user. > > But the HMM framework touched too much core mm code. > > So it is not NVidia only, they are other GPU from different company that > intend to use HMM, i can't comment any further on timeline. > > Regarding NVidia hardware i intend to have the patchset to use HMM inside > nouveau ready before summit and post as RFC. Per drm sub-system guideline > we can not upstream it until we also have a functional userspace stack and > we are also working on that. I would really appreciate to at least see some form of RFC work. It would be a pity to have a HMM discussion anniversary without an actual user in sight. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
