The Gentoo Project about profile stabilization for architecture (ARM64), which has been moved to the category of primary architectures, which is now covered by full support and the formation of updates with the elimination of vulnerabilities. Of the supported ARM64 boards, it can be noted (Model B), Odroid C2, Pine (A64+, Pinebook, Rock64, Sopine64, RockPro64), DragonBoard 410c and Firefly AIO-3399J.
Source: opennet.ru