On Tue, Feb 09, 2021 at 09:05:40AM +0000, obayashi.yoshimasa@xxxxxxxxxxxxx wrote: > > > As the drivers are currently under development and Socionext has > > > chosen 5.4 stable kernel for their development. So I will let > > > Obayashi-san answer this if it's possible for them to migrate to 5.10 > > > instead? > > We have started this development project from last August, > so we have selected 5.4 as most recent and longest lifetime LTS > version at that time. > > And we have already finished to develop other device drivers, > and Video converter and CODEC drivers are now in development. > > > Why pick a kernel that doesn not support the features they require? > > That seems very odd and unwise. > > From the view point of ZeroCopy using DMABUF, is 5.4 not > mature enough, and is 5.10 enough mature ? > This is the most important point for judging migration. How do you judge "mature"? And again, if a feature isn't present in a specific kernel version, why would you think that it would be a viable solution for you to use? good luck! greg k-h
