Environment

• gcc 4.8.5
• Install qemu

Directory structure description

• JOS source code in code directory
• xv6 source code in HW3:xv6_system_calls/xv6 directory

Command

1. build JOS/xv6

• $ make clean
• $ make

2. start virtual machine

• $ make qemu

3. debug

• one terminal $ make qemu-gdb
• another terminal $ make gdb

4. grading your answer in JOS

• $ make grade

Some bugs

• 👉For GCC 7 or later, after switching to lab3 branch an error like kernel panic at kern/pmap.c:147: PADDR called with invalid kva 00000000 will occur. This is a bug caused by the linker script, modify kern/kernel.ld as follow will fix it.

https://github.com/frdmu/MIT-6.828/commit/56516630e75f93acaa93424b6c4e3821e5fafeed

• 👉If you have any problem when make, maybe you can try make clean first!

Undone

• lab2 challenge
• HW5 Optional challenges
• lab3 challenge1(assembly macros)
• lab3 challenge3
• HW8 Optional challenges
• lab4 challenge
• lab5 challenge
• lab6 challenge

Website

1. https://www.cs.hmc.edu/~rhodes/courses/cs134/sp19/schedule.html
2. https://pdos.csail.mit.edu/6.828/2011/schedule.html

Refer

1. https://github.com/clann24/jos
2. https://github.com/woai3c/MIT6.828
3. https://github.com/SmallPond/MIT6.828_OS
4. https://github.com/hehao98/MIT6.828Labs-JOS
5. https://123xzy.github.io/2019/03/08/MIT-6-828-Operating-System-Engineering