Automatic Kernel Builds For Spitfire

spitfire-build-kernel is a small tool for building a Linux kernel image for use in firecracker vms. It bundles deps (kernel tarball, configs, build tools etc) in a container image so you have no depencies apart from docker (or podman, if that's how you swing)

The kernel image and kernel configs are all built using the same files used by the firecracker team here (i just copied them lol!)

Running

If you have go (>= 1.19) and docker installed, you can clone this repository and run

make

By default, it will build a container image, then create and run a container (from the image) to build the kernel image. It stores the build artifact (i.e the kernel image) at /tmp/kernel.image Find the appropriate kernel image for your architecture in there.

The CLI

Usage of spitfire-build-kernel:
  -arch string
        Architecture to compile kernel for, supported archs: x86_64 (default "x86_64")
  -build-image
        Build container that builds kernel
  -build-kernel
        Build the linux kernel
  -list-versions
        List kernel versions
  -run-container
        Run image tagged spitfire-build-kernel
  -version string
        Version of kernel to build (default "6.1")