Luis Chamberlain sent out the modules changes today for the Linux 6.6 merge window. Most notable with the modules update is a change that better builds up the defenses against NVIDIA’s proprietary kernel driver from using GPL-only symbols. Or in other words, bits that only true open-source drivers should be utilizing and not proprietary kernel drivers like NVIDIA’s default Linux driver in respecting the original kernel code author’s intent.
Back in 2020 when the original defense was added, NVIDIA recommended avoiding the Linux 5.9 for the time being. They ended up having a supported driver several weeks later. It will be interesting to see this time how long Linux 6.6+ thwarts their kernel driver.
Depending on the card and your use case the open source drivers might be good enough, although more modern NVIDIA cards are clock locked to the proprietary driver. Nevertheless it’s almost a guarantee that NVIDIA will do something before this kernel goes live for any major distro.
In short NVIDIA has been a crappy company in Linux support unfortunately until very recently they were the least worse option, but now with all of the other manufacturers open sourcing their drivers and not locking their GPUs NVIDIA is less and less appealing so the kernel developers can start to push back against their bullshit.