The RISC-V RVA23 profile is a big deal for reducing fragmentation in the RISC-V ecosystem and standardizing more of the ISA to make it easier to distribute modern RISC-V binaries and the like. Modern versions of Ubuntu mandate RVA23 even though compliant hardware is still quite limited. Somewhat surprisingly, only coming about now is an easy ability for Linux users to find the answer to "is my RISC-V system RVA23 compliant?" Pending Linux kernel patches are finally offering a one-shot way of telling you...