From the AMD point of view, the Linux upstream's approach to modifying the internal API and drivers is a problem itself: "I understand forward progress on APIs,

From the AMD point of view, the Linux upstream's approach to modifying the internal API and drivers is a problem itself: "I understand forward progress on APIs, but frankly from my perspective, atomic has been a disaster for stability of both atomic and pre-atomic code. Every kernel cycle manages to break several drivers. What happened to figuring out how to do in right in a couple of drivers and then moving that to the core. We seem to have lost that in favor of starting in the core first. I feel like we constantly refactor the core to deal with that or that quirk or requirement of someone's hardware and then deal with tons of fallout." Certainly, from what I've seen the first few stable releases after every new kernel version are often full of fixes for modesetting-related regressions.