In a surprising turn of events, an Nvidia engineer pushed a fix to the Linux kernel, resolving a performance regression seen on AMD integrated and dedicated GPU hardware (via Phoronix). Turns out, the same engineer inadvertently introduced the problem in the first place with a set of changes to the kernel last week, attempting to increase the PCI BAR space to more than 10TiB. This ended up incorrectly flagging the GPU as limited and hampering performance, but thankfully it was quickly picked up and fixed.
In the open-source paradigm, it's an unwritten rule to fix what you break. The Linux kernel is open-source and accepts contributions from everyone, which are then reviewed. Responsible contributors are expected to help fix issues that arise from their changes. So, despite their rivalry in the GPU market, FOSS (Free Open Source Software) is an avenue that bridges the chasm between AMD and Nvidia.
