Linux Page Unit Project

Introduction

• This project is a simple demonstration for translating virtual address to physical address.
• Using Page Global Directory(PGD), Page Upper Directory(PUD), Page Middle Directory(PMD), Page Table(PTE)
• Implemented with a Linux kernel module.

Environment

• Linux Kernel 3.10.104
• Ubuntu Desktop 16.04 32-bit
• Ubuntu Package:
  • wget
  • gcc
  • bc
  • libgetopt-argvfile-perl
  • libncurses5-dev

Setup

• Compile and install Linux kernel(v3.10.104) from source code
  • reference
    • https://blog.kaibro.tw/2016/11/07/Linux-Kernel%E7%B7%A8%E8%AD%AF-Ubuntu/
• Create Makefile for compiling Linux Module
  • reference
    • https://wwssllabcd.github.io/blog/2012/11/13/how-to-make-linux-module/
• Compile hello.c and using dmesg to watch the output of kernel module.

Result

• We can use dmesg to watch the output of this kernel module.
• We can see the virtual address translating procedure with PGD->PUD->PMD->PT, and then we can get physical address in out physical memory.
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