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kernel: add support for building virtio-fs kernel

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Adding option `-e` to support experimental flag. When selected, the
kernel for virtio-fs is utilized instead of standard kernel.org.

This is a bit more hack-ish than I'd prefer, sorry.

Fixes: #700

Signed-off-by: Eric Ernst <eric.ernst@intel.com>
This commit is contained in:
Eric Ernst
2019-09-04 09:55:48 -07:00
parent 2b617ed8c7
commit baa2ef1bbf
1 changed files with 42 additions and 30 deletions
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72
kernel/build-kernel.sh
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@@ -39,6 +39,8 @@ readonly default_kernel_config_dir="${GOPATH}/src/${kernel_config_repo}/kernel/c
readonly default_config_frags_dir="${GOPATH}/src/${kernel_config_repo}/kernel/configs/fragments"
#Path to kernel directory
kernel_path=""
#Experimental kernel support. Pull from virtio-fs GitLab instead of kernel.org
experimental_kernel="false"
#
patches_path=""
#
@@ -90,44 +92,54 @@ arch_to_kernel() {
case "$arch" in
aarch64) echo "arm64" ;;
ppc64le) echo "powerpc" ;;
x86_64) echo "$arch" ;;
s390x) echo "s390" ;;
x86_64) echo "$arch" ;;
*) die "unsupported architecture: $arch" ;;
esac
}
get_kernel() {
local version="${1:-}"
#Remove extra 'v'
version=${version#v}
local kernel_path=${2:-}
[ -n "${kernel_path}" ] || die "kernel_path not provided"
[ ! -d "${kernel_path}" ] || die "kernel_path already exist"
major_version=$(echo "${version}" | cut -d. -f1)
kernel_tarball="linux-${version}.tar.xz"
curl --fail -OL "https://cdn.kernel.org/pub/linux/kernel/v${major_version}.x/sha256sums.asc"
grep "${kernel_tarball}" sha256sums.asc >"${kernel_tarball}.sha256"
if [ -f "${kernel_tarball}" ] && ! sha256sum -c "${kernel_tarball}.sha256"; then
info "invalid kernel tarball ${kernel_tarball} removing "
rm -f "${kernel_tarball}"
fi
if [ ! -f "${kernel_tarball}" ]; then
info "Download kernel version ${version}"
info "Download kernel"
curl --fail -OL "https://www.kernel.org/pub/linux/kernel/v${major_version}.x/${kernel_tarball}"
if [[ ${experimental_kernel} == "true" ]]; then
kernel_tarball="linux-${version}.tar.gz"
curl --fail -OL "https://gitlab.com/virtio-fs/linux/-/archive/${version}/${kernel_tarball}"
tar xvf "${kernel_tarball}"
mv "linux-${version}" "${kernel_path}"
else
info "kernel tarball already downloaded"
#Remove extra 'v'
version=${version#v}
major_version=$(echo "${version}" | cut -d. -f1)
kernel_tarball="linux-${version}.tar.xz"
curl --fail -OL "https://cdn.kernel.org/pub/linux/kernel/v${major_version}.x/sha256sums.asc"
grep "${kernel_tarball}" sha256sums.asc >"${kernel_tarball}.sha256"
if [ -f "${kernel_tarball}" ] && ! sha256sum -c "${kernel_tarball}.sha256"; then
info "invalid kernel tarball ${kernel_tarball} removing "
rm -f "${kernel_tarball}"
fi
if [ ! -f "${kernel_tarball}" ]; then
info "Download kernel version ${version}"
info "Download kernel"
curl --fail -OL "https://www.kernel.org/pub/linux/kernel/v${major_version}.x/${kernel_tarball}"
else
info "kernel tarball already downloaded"
fi
sha256sum -c "${kernel_tarball}.sha256"
tar xf "${kernel_tarball}"
mv "linux-${version}" "${kernel_path}"
fi
sha256sum -c "${kernel_tarball}.sha256"
tar xf "${kernel_tarball}"
mv "linux-${version}" "${kernel_path}"
}
get_major_kernel_version() {
@@ -348,7 +360,7 @@ install_kata() {
}
main() {
while getopts "a:c:hk:p:t:v:" opt; do
while getopts "a:c:hk:p:t:v:e" opt; do
case "$opt" in
a)
arch_target="${OPTARG}"
@@ -356,22 +368,22 @@ main() {
c)
kernel_config_path="${OPTARG}"
;;
e)
experimental_kernel="true"
;;
h)
usage
exit 0
;;
k)
kernel_path="${OPTARG}"
;;
t)
hypervisor_target="${OPTARG}"
;;
p)
patches_path="${OPTARG}"
;;
t)
hypervisor_target="${OPTARG}"
;;
v)
kernel_version="${OPTARG}"
;;