If you are using VSCode for Linux kernel development, following setup will be useful:

1. Clone https://github.com/aakbar5/handy-kernel_modules. It contains the
   • Makefile: to build kernel modules
   • .devcontainer: to setup vscode for remote development inside the Docker container
   • .vscode: From tasks build and run Qemu.
2. Start vscode
3. Open the folder having linux kernel development project
4. Select: Remote-Containers: Open Folder in Container… from the popup menu.
5. Select the folder selected in #2
6. Keep an eye on the vscode status bar while it is showing Opening Remote…
7. Once vscode is setup, your project will be ready for development in container environment.
8. Press CTRL+P for Tasks: Run Task
9. Select kmod – build task to build a kernel module setup in Makefile.
10. Press CTRL+P for Tasks: Run Task
11. Select Generate compile_commands.json from the list of tasks.
    • It will run generate_compdb.py (https://github.com/aakbar5/vscode-linux-kernel) for the linux kernel and for the project workspace.
    • It will generate compile_commands.json which will help you in code assistance.
12. Press CTRL+P for Tasks: Run Task
13. Select Run QEMU and wait for QEMU to be ready for use
14. Press CTRL+P for Tasks: Run Task and select kmod – load
    
    • This command will copy built kernel module to QEMU.
15. Get back to QEMU shell in vscode terminal and use kernel module commands to test your new kernel module.
16. Once you are done with development, use Dev Container: Close Remote Connection option.