Compile your own kernel and install
I have updated my Ubuntu kernel from 5.0.* -> 5.6.13
This note is a backup of How to compile and install Linux Kernel 5.6.9 from source code.
Environment: Ubuntu 18.04
Kernel: 5.0.*
Step 0. Install the required compilers and tools
$ sudo apt-get install build-essential libncurses-dev bison flex libssl-dev libelf-dev
$ wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.13.tar.xz
Step 2. Extract tar.xz file
$ unxz -v linux-5.6.13.tar.xz
Step 3. Verify signature
$ wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.13.tar.sign
$ gpg --verify linux-5.6.13.tar.sign
output: using RSA key 7@%^*#^%^*
$ gpg --recv-keys 7@%^*#^%^*
$ gpg --verify linux-5.6.13.tar.sign
Step 4. Configure the Linux kernel features and modules
$ cd linux-5.6.13
$ cp -v /boot/config-$(uname -r) .config
make menuconfig
Step 5. Compile
$ make -j4
Step 6. Install kernel modules
$ sudo make modules_install
Step 7. Install kernel
$ sudo make install
Step 8. Update grub config
$ sudo update-initramfs -c -k 5.6.13
$ sudo update-grub
Step 9. Reboot and check version
$ reboot
$ uname -mrs
Linux 5.6.13 x86_64
Ref. https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html
Advanced:
Trace kernel initializes:
https://danielmaker.github.io/blog/linux/start_kernel.html
http://reborn2266.blogspot.com/2013/11/linux-root-file-system.html?m=1
Build your own kernel:
http://fichugh.blogspot.com/2016/02/buildroot-study.html?m=1
Last modified 1yr ago