If RISC-V is a success, we are talking about a kernel coded using risc-v assembly (with a conservative usage of a preprocessor and maybe simple code generators written in assembly themselves or using a high level language which interpreter is written in assembly).<p>Not to mention that it seems porting from one modern ISA to another, is not that hard.<p>On the long run, that means no planned obsolescence anymore from the ISO C syntax and gcc extensions (you know _that_ extension you now need to compile linux... which was added to gcc 2 weeks ago).