To implement a seamless Linux integration into Starina, I decided to go with a Linux lightweight VM approach similar to WSL2. This means I need to implement a hypervisor that can run Linux. I had implemented an Intel VT-x based hypervisor before, but this time I wanted to try something different: RISC-V H-extension based hypervisor! This post is a diary of my journey of writing a RISC-V hypervisor incrementally. RISC-V H-extension RISC-V H-extension introduces new CPU modes and some more CSRs (s...