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https://github.com/linuxkit/linuxkit.git
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c2df261e01
* Use latest kernel in linuxkit Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Parallelize kernel source compression This surpringly saves a lot of time: M1: from 340 to 90 seconds Intel: from 527 to 222 seconds (2 cores 4 threads) Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Add buildx target buildx can use remote builders and automatically generate the multiarch manifest. A properly configured builder is required : First create docker context for the remote builders : $ docker context create node-<arch> --docker "host=ssh://<user>@<host>" Then create a buildx configuration using the remote builders: $ docker buildx create --name kernel_builder --platform linux/amd64 $ docker buildx create --name kernel_builder --node node-arm64 --platform linux/arm64 --append $ docker buildx use kernel_builder $ docker buildx ls Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Add a PLATFORMS variable to declare platforms needed for buildx Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Make image name customizable Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Do not tag use the architecture suffix for images built with buildx Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> * Add make kconfigx to upgrade configs using buildx To update configuration for 5.10 kernels use : make -C kernel KERNEL_VERSIONS=5.10.104 kconfigx Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com> --------- Signed-off-by: Frédéric Dalleau <frederic.dalleau@docker.com>
72 lines
1.6 KiB
Docker
72 lines
1.6 KiB
Docker
# syntax=docker/dockerfile:1.3-labs
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ARG BUILD_IMAGE
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FROM ${BUILD_IMAGE} AS kernel-build
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ARG KERNEL_VERSIONS
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ARG TARGETARCH
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RUN apk add \
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argp-standalone \
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bison \
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build-base \
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curl \
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diffutils \
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flex \
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gmp-dev \
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libarchive-tools \
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mpc1-dev \
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mpfr-dev \
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ncurses-dev \
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patch \
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xz
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COPY / /
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# Unpack kernels (download if not present)
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RUN <<EOF
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set -e
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for VERSION in ${KERNEL_VERSIONS}; do
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MAJOR=$(echo ${VERSION} | cut -d . -f 1)
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MAJOR=v${MAJOR}.x
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echo "Downloading/Unpacking $VERSION"
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KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/${MAJOR}/linux-${VERSION}.tar.xz
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if [ ! -f sources/linux-${VERSION}.tar.xz ] ; then
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curl -fSLo sources/linux-${VERSION}.tar.xz --create-dirs ${KERNEL_SOURCE}
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fi
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bsdtar xf sources/linux-${VERSION}.tar.xz
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done
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EOF
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# Apply patches to all kernels and move config files into place
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RUN <<EOF
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set -e
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for VERSION in ${KERNEL_VERSIONS}; do
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SERIES=${VERSION%.*}.x
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echo "Patching $VERSION $SERIES"
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cd /linux-${VERSION}
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if [ -d /patches-${SERIES} ]; then
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for patch in /patches-${SERIES}/*.patch; do
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echo "Applying $patch"
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patch -t -F0 -N -u -p1 < "$patch"
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done
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fi
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if [ ${TARGETARCH} = "amd64" ] ; then
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cp /config-${SERIES}-x86_64 .config
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ARCH=x86 make oldconfig
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ls
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elif [ ${TARGETARCH} = "arm64" ] ; then
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cp /config-${SERIES}-aarch64 .config
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ARCH=arm64 make oldconfig
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fi
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done
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EOF
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ENTRYPOINT ["/bin/sh"]
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FROM scratch
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ARG KERNEL_VERSIONS
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ARG TARGETARCH
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WORKDIR /
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COPY --from=kernel-build /linux-${KERNEL_VERSIONS}/.config config-${KERNEL_VERSIONS}-$TARGETARCH
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