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License compliance

This repository is the complete corresponding source, in the sense of GPLv2 section 3, for the Runloop microVM kernel binaries. A shipped kernel binary is built from:

  • the upstream Linux kernel source from https://www.kernel.org/ (release per the kernel version recorded in versions.yaml and the build workflow), plus
  • the patches in packaging/kernel/patches/,
  • the kernel config fragments in packaging/kernel/configs/, and
  • the build scripts in this repository (packaging/kernel/build-kernel.sh and packaging/scripts/).

Every kernel artifact build pushes a git tag named after the artifact tarball (sans extension), so each shipped binary maps to the exact commit of this repository — and thereby the exact patches, config, and scripts — used to build it.

Licenses

  • The Linux kernel is GPL-2.0-only; the COPYING file in the upstream kernel tarball governs. The patches in packaging/kernel/patches/ modify the kernel and are likewise GPL-2.0.
  • The build scripts and config fragments are derived from Kata Containers packaging and are Apache-2.0; their copyright and SPDX notices are retained. The top-level LICENSE file (Apache-2.0) covers this repository's own build tooling.
  • The e2fsprogs build recipe in packaging/e2fsprogs/ is the complete build definition for the statically linked resize2fs bundled in the Runloop guest initrd (GPL-2.0, with LGPL-2.0 libext2fs); see the README in that directory for the exact upstream source and checksum.