Experience the inherent beauty of Linux

In the upper part of this article, I will talk to netizens about the i386 architecture and understand the memory addressing and virtual memory in Intel systems. In the lower half, we will implement the shortest kernel that can be started. First, we will deepen our understanding of the i386 system, and then demonstrate the original process of system development. As an example, we will analyze the computer startup process, and then start to learn how to develop a boot System Based on the i386 system.
I386 architecture (I) (full text)

Our main goal in this article is to implement a simple operating system that can be started and can enter the protection mode. So this article first analyzes the computer startup process, and then starts to learn and develop a boot System Based on the i386 system.
I386 architecture (below) (full text)

This article focuses on the system calling mechanism. It involves the performance and context of some system calls, and also describes some kernel debugging methods. In the last part of the experiment, we used system calls and related kernel services to complete a specific task of collecting system call sequences. This experiment has strong practical and teaching value.
Linux System Call (full text)

In this article, we will explain the interrupt concept in sequence, parse the interrupt implementation mechanism in Linux, and explain how interrupts are used in Linux. As an example, we will first add a clock interrupt to the system created in Chapter i386 architecture. Second, we will note the RTC interrupt for everyone, we hope that these two instances can help readers understand the concepts, implementations, and programming methods related to interruptions.
Linux interrupt parsing (full text)

The purpose of this article is to analyze how to implement a new file system in Linux. Before introducing the implementation of a file system, we first introduce the concepts and functions of the file system and abstract the conceptual model of the file system. After getting familiar with the connotation of the file system, let's take a closer look at the special style of the Linux System and the structure of the specific File System in Linux, it gradually outlines the working panorama of the file system in Linux. Finally, in the case section, we will use the romfs file system as an example to analyze the general steps of implementing the file system.
How to implement a file system (full text)

This article first examines Linux Process Memory Management from the perspective of Program developers, on this basis, we will gradually go deep into the kernel to discuss the system's physical memory management and kernel memory usage methods. We strive to provide guidance on Linux memory management and usage from external sources. At the end of this chapter, we will provide an example of memory ing to help netizens understand the relationship between kernel memory management and user memory management. I hope you can ultimately control Linux memory management.
Linux memory management (full text)