Fedora was very excited in a February article and Debian, Ubuntu, and other distros have installer images for RISC-V. With the open source and cheaper architecture compared to x86, support for it will only snowball now. There are also x86 emulators for RISC-V systems, which might perhaps bridge the gap where support is not yet native?
For those not in the loop; https://www.cyberciti.biz/faq/understanding-bash-fork-bomb/