If you need to install the kernel, you can perform the following steps (this step is not necessary) #If you need to install the kernel,Īfter installation, restart the host and select a new kernel in Grub. VmLinux is the debugging Map file required by GDB, and bzImage is the large kernel file Later, the speed will become faster because intermediate files have been generatedĪfter compilation, the following will be generated in the directory This step will take a long time for the first time. Since debugging related configurations have been checked by default, you can exit and save directly from esc Various configurations for kernel compilation can be performed here. #If you choose Tsinghua source here, the domestic speed will be much faster Tsinghua apt source is used here vim /etc/apt/sources.list Kernel compilation #Installation and compilation related dependenciesĪpt-get install libncurses5-dev libssl-dev bison flex libelf-dev gcc make openssl libc6-dev Due to the slow update speed of the original apt, the domestic source needs to be updated. The specific installation process is omitted. In addition, the 圆4 version is the best choice, and the performance will be better. Install Ubuntu 14.04 in the virtual machine (Parrales Desktop, vmware, etc.), where the Ubuntu version can be selected freely, as long as Parrales tools can be installed normally. Download linux kernel, compile and generate bzImage.Install Ubuntu in the virtual machine (parales desktop, vmware, etc.) (if the host itself is a Linux system, this step can be omitted).If the host itself is a Linux system, there is no need to install a virtual machine, and the kernel debugging environment can be built directly, with better performance. Since the personal host is MacOS 10.14.5, use Ubuntu 14.04 amd64 to build the kernel debugging environment on the Parrales Desktop virtual machine. The author has taken many detours in the implementation process, and it is not convenient to directly use GDB to debug and view the code, Therefore, VS Code+Qemu+GDB is used for Linux kernel debugging, and the main steps in the process are recorded. There are many methods to debug the kernel on the Internet, mainly using Qemu+GDB to debug the kernel, but most of the online materials are scattered and the step records are not detailed enough. Simply reading the source code is not as good as debugging the kernel step by step. After reading advanced programming in UNIX environment, I still lack a deep understanding of the implementation methods of some modules in the system, so I want to study the Linux kernel mechanism.

All along, the understanding of Linux system is at the application level.

How to install gdb in linux