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Merge pull request #508 from nitkon/patch-3

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docs: Use kernel build script for building kernel in developer guide
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GabyCT 2019-06-20 14:47:41 -05:00 committed by GitHub
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Developer-Guide.md
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@ -330,40 +330,7 @@ $ (cd /usr/share/kata-containers && sudo ln -sf "$image" kata-containers-initrd.
# Install guest kernel images
As a prerequisite, you need to install `libelf-dev` and `bc`. Otherwise, you
will not be able to build the kernel from sources.
```
$ go get github.com/kata-containers/tests
$ cd $GOPATH/src/github.com/kata-containers/tests/.ci
$ kernel_arch="$(./kata-arch.sh)"
$ kernel_dir="$(./kata-arch.sh --kernel)"
$ tmpdir="$(mktemp -d)"
$ pushd "$tmpdir"
$ curl -L https://raw.githubusercontent.com/kata-containers/packaging/master/kernel/configs/${kernel_dir}_kata_kvm_4.14.x -o .config
$ kernel_version=$(grep "Linux/[${kernel_arch}]*" .config | cut -d' ' -f3 | tail -1)
$ kernel_tar_file="linux-${kernel_version}.tar.xz"
$ kernel_url="https://cdn.kernel.org/pub/linux/kernel/v$(echo $kernel_version | cut -f1 -d.).x/${kernel_tar_file}"
$ curl -LOk ${kernel_url}
$ tar -xf ${kernel_tar_file}
$ mv .config "linux-${kernel_version}"
$ pushd "linux-${kernel_version}"
$ curl -L https://raw.githubusercontent.com/kata-containers/packaging/master/kernel/patches/4.19.x/0003-NO-UPSTREAM-9P-always-use-cached-inode-to-fill-in-v9.patch | patch -p1
$ curl -L https://raw.githubusercontent.com/kata-containers/packaging/master/kernel/patches/4.19.x/0004-Compile-in-evged-always.patch | patch -p1
$ make ARCH=${kernel_dir} -j$(nproc)
$ kata_kernel_dir="/usr/share/kata-containers"
$ kata_vmlinuz="${kata_kernel_dir}/kata-vmlinuz-${kernel_version}.container"
$ case $kernel_arch in ppc64le) kernel_path="./vmlinux";; aarch64) kernel_path="arch/arm64/boot/Image";; *) kernel_path="arch/${kernel_arch}/boot/bzImage";; esac
$ kernel_file="$(realpath $kernel_path)"
$ sudo install -o root -g root -m 0755 -D "${kernel_file}" "${kata_vmlinuz}"
$ sudo ln -sf "${kata_vmlinuz}" "${kata_kernel_dir}/vmlinuz.container"
$ kata_vmlinux="${kata_kernel_dir}/kata-vmlinux-${kernel_version}"
$ sudo install -o root -g root -m 0755 -D "$(realpath vmlinux)" "${kata_vmlinux}"
$ sudo ln -sf "${kata_vmlinux}" "${kata_kernel_dir}/vmlinux.container"
$ popd
$ popd
$ rm -rf "${tmpdir}"
```
You can build and install the guest kernel image as shown [here](https://github.com/kata-containers/packaging/tree/master/kernel#build-kata-containers-kernel).
# Install a hypervisor