Xv6 for RISC-V is a teaching operating system that reimplements Unix Version 6 for modern RISC-V multiprocessors in ANSI C.
The project recreates a classic Unix kernel in a form suitable for study and experimentation. Rather than building from scratch, it follows the structure and style of the original Version 6 while targeting contemporary hardware. The implementation covers core OS concepts including context switching, locking, and multiprocessor support, making the codebase accessible for understanding how operating systems work at a fundamental level.
This tool is designed primarily for educational use in operating systems courses. It suits anyone learning kernel internals, systems programming, or the history of Unix design. The project explicitly prioritizes simplifications and clarifications over new features, meaning the codebase remains focused on pedagogical value rather than production capability. Building and running the system requires a RISC-V toolchain and QEMU compiled for RISC-V, with the build process straightforward once dependencies are in place.
The project maintains active engagement with its user base, accepting bug reports and patches from a broad community of contributors. Development is guided by the principle that teaching value takes precedence over feature expansion, keeping the scope manageable and the code understandable for students and instructors alike.
