This article shows you how to set up the debug environment using serial communication port, how to compile modified kernel code, and how to start kernel debugging.
本文介绍如何使用串行通信端口来设置调试环境、如何编译经过修改的内核代码，以及如何开始内核调试。
It is important that you use a null modem cable; if you use a typical serial cable, the target computer expects a serial device and not another serial port, and you cannot debug the computer.
有一点很重要，那就是要使用零调制解调器电缆，如果您使用普通的串行电缆，目标计算机则期望与串行设备通信，而不是与另一个串行端口通信，这样您就无法调试该计算机。
It is important that you use a null modem cable; if you use a typical serial cable, the target computer expects a serial device and not another serial port, and you cannot debug the computer.
有一点很重要，那就是要使用零调制解调器电缆，如果您使用普通的串行电缆，目标计算机则期望与串行设备通信，而不是与另一个串行端口通信，这样您就无法调试该计算机。
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