If you're intel or AMD, you can add a x86 mode to your RISC-V processor. Even a hardware-based x86 frontend. It could e.g. run usermode code uninterrupted, esc

If you're intel or AMD, you can add a x86 mode to your RISC-V processor. Even a hardware-based x86 frontend. It could e.g. run usermode code uninterrupted, escaping to RISC-V on syscalls, interrupts, exceptions.