Xv6 sources and text
The latest xv6 source is available via
git clone git://pdos.csail.mit.edu/xv6/xv6.git
We also distribute the sources as a printed booklet with line numbers that keep everyone together during lectures. The booklet is available as xv6-rev7.pdf. To get the version corresponding to this booklet, run
git checkout -b xv6-rev7 xv6-rev7
The xv6 source code is licensed under the traditional MIT license; see the LICENSE file in the source distribution. To help students read through xv6 and learn about the main ideas in operating systems we also distribute a textbook/commentary for the latest xv6. The line numbers in this book refer to the above source booklet.
xv6 compiles using the GNU C compiler, targeted at the x86 using ELF binaries. On BSD and Linux systems, you can use the native compilers; On OS X, which doesn't use ELF binaries, you must use a cross-compiler. Xv6 does boot on real hardware, but typically we run it using the QEMU emulator. Both the GCC cross compiler and QEMU can be found on the 6.828 tools page.
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