xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix Version 6 (v6). xv6 loosely follows the structure and style of v6, but is implemented for a modern RISC-V multiprocessor using ANSI C.
ACKNOWLEDGMENTS
xv6 is inspired by John Lions's Commentary on UNIX 6th Edition (Peer to Peer Communications; ISBN: 1-57398-013-7; 1st edition (June 14, 2000)). See also online resources for v6.
The following people have made contributions:
- Russ Cox (context switching, locking)
- Cliff Frey (MP)
- Xiao Yu (MP)
- Nickolai Zeldovich
- Austin Clements
We are also grateful for the bug reports and patches contributed by:
- Takahiro Aoyagi
- Silas Boyd-Wickizer
- Anton Burtsev
- carlclone
- Ian Chen
- Dan Cross
- Cody Cutler
- Mike CAT
- Tej Chajed
- Asami Doi
- eyalz800
- Nelson Elhage
- Saar Ettinger
- Alice Ferrazzi
- Nathaniel Filardo
- flespark
- Peter Froehlich
- Yakir Goaron
- Shivam Handa
- Matt Harvey
- Bryan Henry
- jaichenhengjie
- Jim Huang
- Matúš Jókay
- John Jolly
- Alexander Kapshuk
- Anders Kaseorg
- kehao95
- Wolfgang Keller
- Jungwoo Kim
- Jonathan Kimmitt
- Eddie Kohler
- Vadim Kolontsov
- Austin Liew
- l0stman
- Pavan Maddamsetti
- Imbar Marinescu
- Yandong Mao
- Matan Shabtay
- Hitoshi Mitake
- Carmi Merimovich
- Mark Morrissey
- mtasm
- Joel Nider
- Hayato Ohhashi
- OptimisticSide
- Harry Porter
- Greg Price
- Jude Rich
- segfault
- Ayan Shafqat
- Eldar Sehayek
- Yongming Shen
- Fumiya Shigemitsu
- Cam Tenny
- tyfkda
- Warren Toomey
- Stephen Tu
- Rafael Ubal
- Amane Uehara
- Pablo Ventura
- Xi Wang
- WaheedHafez
- Keiichi Watanabe
- Nicolas Wolovick
- wxdao
- Grant Wu
- Jindong Zhang
- Icenowy Zheng
- ZhUyU1997
- Zou Chang Wei
The code in the files that constitute xv6 is Copyright 2006-2022 Frans Kaashoek, Robert Morris, and Russ Cox.
ERROR REPORTS
Please send errors and suggestions to Frans Kaashoek and Robert Morris (kaashoek,[email protected]). The main purpose of xv6 is as a teaching operating system for MIT's 6.1810, so we are more interested in simplifications and clarifications than new features.
BUILDING AND RUNNING XV6
You will need a RISC-V "newlib" tool chain from https://github.com/riscv/riscv-gnu-toolchain, and qemu compiled for riscv64-softmmu. Once they are installed, and in your shell search path, you can run "make qemu".