The HyperNews Linux KHG Discussion Pages . ... This chapter tries to explain the Linux source code in an orderly manner, trying to help the reader to achieve a good understanding of how the source code is laid out and how the most relevant unix features are implemented. ... That's why the chosen entry point for the kernel tour is the kernel own entry point: system boot. ... Finally, the kernel is ready to move_to_user_mode() , in order to fork the init process, whose code is in the same source file. ...