Linux Kernel

This repository holds a fork of the upstream Linux kernel, for Kinvolk development purposes.

Branches

• upstream patch sets (ususally $user/ prefixed)
• Flatcar Container Linux branches (all -flatcar suffixed)
• historic CoreOS Container Linux branches (all -coreos suffixed)

Development

Please note: this repo solely exists for development of Flatcar Container Linux specific patches for the overlay repository. This repository is not used by the build process at all; it merely exists for generating patchsets that live in the overlay repository. The build process pulls the sources directly from git.kernel.org.

The repo is updated on an on-demand basis, i.e. when patches need to be ported to a newer kernel release, or when new patches need to be introduced.

Generate Overlay patches

To create a patch, check out the branch you want to introduce a change to (probably v${VERSION}-flatcar or v${VERSION}-coreos for legacy branches), apply your change, and then run git format-patch ${TAG} where tag is the exact upstream kernel tag (without -flatcar). This generates a set of patches that can be used by ./revbump.sh script in the coreos-sources directory in the overlay.

git checkout v5.4.55-flatcar

<Apply and commit your patch>

git format-patch v5.4.55
# check that the patches were generated correctly
ls *.patch