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developer-guide: update guest kernel image section

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add steps to build kata kernel from source

Signed-off-by: Julio Montes <julio.montes@intel.com>
This commit is contained in:
Julio Montes 2018-05-08 11:02:07 -05:00
parent 2b47961105
commit 7916e21edd
1 changed files with 25 additions and 15 deletions
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40
Developer-Guide.md
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@ -38,9 +38,8 @@ This document is written **specifically for developers**.
- `make`. - `make`.
- `gcc` (required for building the shim and runtime). - `gcc` (required for building the shim and runtime).
- You have installed the Clear Containers `linux-container` and `qemu-lite` - You have installed the `qemu-lite` package containing the hypervisor. This package
packages containing the guest kernel images and hypervisor. These packages is automatically installed when you install Clear Containers, but can be
are automatically installed when you install Clear Containers, but can be
installed separately as well: installed separately as well:
https://github.com/clearcontainers/runtime/wiki/Installation https://github.com/clearcontainers/runtime/wiki/Installation
@ -227,18 +226,29 @@ $ (cd /usr/share/kata-containers && sudo ln -sf "$image" kata-containers-initrd.
# Install guest kernel images # Install guest kernel images
``` ```
$ sudo ln -s /usr/share/clear-containers/vmlinux.container /usr/share/kata-containers/ $ kernel_arch="$(arch)"
$ sudo ln -s /usr/share/clear-containers/vmlinuz.container /usr/share/kata-containers/ $ tmpdir="$(mktemp -d)"
``` $ pushd "$tmpdir"
$ curl -L https://raw.githubusercontent.com/kata-containers/packaging/master/kernel/configs/x86_kata_kvm_4.14.x -o .config
> **Note:** $ kernel_version=$(grep "Linux/[${kernel_arch}]*" .config | cut -d' ' -f3 | tail -1)
> $ kernel_tar_file="linux-${kernel_version}.tar.xz"
> - The files in the previous commands are from the Clear Containers $ kernel_url="https://cdn.kernel.org/pub/linux/kernel/v$(echo $kernel_version | cut -f1 -d.).x/${kernel_tar_file}"
> `linux-container` package. See [Assumptions](#assumptions). $ curl -LOk ${kernel_url}
$ tar -xf ${kernel_tar_file}
If you want to use an initrd image, install the [hyperstart](https://github.com/hyperhq/hyperstart/) kernel instead: $ mv .config "linux-${kernel_version}"
``` $ pushd "linux-${kernel_version}"
$ sudo wget -O /usr/share/kata-containers/vmlinuz.container https://github.com/hyperhq/hyperstart/raw/master/build/arch/x86_64/kernel $ curl -L https://raw.githubusercontent.com/kata-containers/packaging/master/kernel/patches/0001-NO-UPSTREAM-9P-always-use-cached-inode-to-fill-in-v9.patch | patch -p1
$ make ARCH=${kernel_arch} -j$(nproc)
$ kata_kernel_dir="/usr/share/kata-containers"
$ kata_vmlinuz="${kata_kernel_dir}/kata-vmlinuz-${kernel_version}.container"
$ sudo install -o root -g root -m 0755 -D "$(realpath arch/${kernel_arch}/boot/bzImage)" "${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}"
``` ```
# Update Docker configuration # Update Docker configuration