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xv6

This is my fork of the Xv6 operating system for studying operating systems. You can view the original README at README.orig. The projects homepage is here: http://pdos.csail.mit.edu/6.828/2014/xv6.html

Feel free to pull/copy any code from this repository. All source is licensed under the MIT open source license. Please keep in my mind that I'm not a professional kernel developer and am using this to learn more about hardware and operating systems. As such, I'm not making any guarantees about the correctness/design of the code.

Changes from original

  • Source tree has been reorganized in the following manner:
    • Kernel source is in sys
    • User space libraries are in lib
    • User space programs are in bin
    • All headers (kernel and user space) are located in include
    • Documentation/handbook generation logic has been removed from the respository
  • CPU scheduler will halt the cpu(s) when idle
  • Adds the following system calls:
    • dup2 : This mimics the functionality of Posix dup2
  • Lazily allocates pages on page faults