While for months there have been experimental patches taking Zink to OpenGL 4.6 for this OpenGL-on-Vulkan translation layer integrated into Mesa, the upstreaming process around testing and code review is quite lengthy with up until today still only exposing OpenGL 3.3 with mainline Mesa. But with the latest Git commits, Zink is now up to OpenGL 4.1...
While many Linux users were excited when finding out the open-source AMD Radeon Linux drivers were allowing Smart Access Memory (Resizable BAR) support on older motherboards/CPUs and older Radeon GPUs rather than basically the very latest AMD products as seen on Windows, there is a change of course due to bugs. Now, officially, Mesa 21.0 is just enabling Smart Access Memory for systems with AMD Zen 3 processors and RDNA 2 graphics cards though if you have other hardware you can force-enable it...