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run_qemu.sh
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#!/bin/bash -Ee
# SPDX-License-Identifier: CC0-1.0
# Copyright (C) 2021 Intel Corporation. All rights reserved.
# default config
: "${builddir:=./qbuild}"
rootpw="root"
rootfssize="10G"
espsize="512M"
nvme_size="1G"
efi_mem_size="2" #in GiB
legacy_pmem_size="2" #in GiB
pmem_size="16384" #in MiB
pmem_label_size=2 #in MiB
pmem_final_size="$((pmem_size + pmem_label_size))"
: "${qemu:=qemu-system-x86_64}"
: "${gdb:=gdb}"
: "${ndctl:=$(readlink -e ~/git/ndctl)}"
selftests_home=root/built-selftests
: "${mkosi_bin:=mkosi}"
mkosi_opts=("-i" "-f")
console="ttyS0"
accel="kvm"
# some canned hmat defaults - make configurable as/when needed
# terminology:
# local = attached directly to the socket in question
# far = memory controller is on 'this' socket, but distinct numa node/pxm domain
# cross = memory controller across sockets
# mem = memory node and pmem = NVDIMM node, as before
# Units: lat(ency) - nanoseconds, bw - MB/s
local_mem_lat=5
local_mem_bw=2000
far_mem_lat=10
far_mem_bw=1500
cross_mem_lat=20
cross_mem_bw=1000
# local_pmem is not a thing. In these configs we always give pmems their own node
far_pmem_lat=30
far_pmem_bw=1000
cross_pmem_lat=40
cross_pmem_bw=500
# similarly, some canned SLIT defaults
local_mem_dist=10
far_mem_dist=12
cross_mem_dist=21
far_pmem_dist=17
cross_pmem_dist=28
# CXL device params
cxl_addr="0x4c00000000"
cxl_backend_size="512M"
cxl_t3_size="256M"
cxl_label_size="128K"
num_build_cpus="$(($(getconf _NPROCESSORS_ONLN) + 1))"
rsync_opts=("--delete" "--exclude=.git/" "--exclude=build/" "-L" "-r")
qemu_dir=$(dirname "$(dirname "$qemu")")
if [[ $qemu_dir != . ]]; then
qemu_img="$qemu_dir/qemu-img"
if [ ! -f "$qemu_img" ]; then
qemu_img="$qemu_dir/build/qemu-img"
fi
qmp="$qemu_dir/scripts/qmp/qmp-shell"
else
qemu_img="qemu-img"
# Allows to not find the command qmp-shell
set +Ee
qmp=$(command -v qmp-shell)
# Do not leave qmp variable empty
if [ -z "$qmp" ]; then
qmp="qmp"
fi
# Back to the original setup
set -Ee
fi
fail()
{
# shellcheck disable=SC2059
printf "$@"
printf '\n'
exit 1
}
script_dir="$(cd "$(dirname "$(readlink -e "${BASH_SOURCE[0]}")")" && pwd)"
parser_generator="${script_dir}/parser_generator.m4"
parser_lib="${script_dir}/run_qemu_parser.sh"
if [ ! -e "$parser_lib" ] || [ "$parser_generator" -nt "$parser_lib" ]; then
if command -V argbash > /dev/null; then
argbash --strip user-content "$parser_generator" -o "$parser_lib"
else
fail "error: please install argbash"
fi
fi
# shellcheck source=run_qemu_parser.sh
. "${script_dir}/run_qemu_parser.sh" || fail "Couldn't find $parser_lib"
if [ ${_arg_working_dir:0:1} == "-" ]; then
printf "Invalid option '%s'\n" "$_arg_working_dir"
printf "Try 'run_qemu.sh --help' for more information.\n"
exit 1
fi
cxl_test_script="$script_dir/scripts/rq_cxl_tests.sh"
cxl_results_script="$script_dir/scripts/rq_cxl_results.sh"
nfit_test_script="$script_dir/scripts/rq_nfit_tests.sh"
nfit_results_script="$script_dir/scripts/rq_nfit_results.sh"
# /etc/os-release is what mkosi "detect_distribution()" uses too.
get_os()
{
awk -F= 'BEGIN { notfound=1 }
/^ID=/ { print $2; notfound=0; exit }
END { exit notfound }' /etc/os-release
}
# distro: if any, user input passed to mkosi configuration line: "Distribution=$distro"
# rev: if any, user input passed to mkosi configuration line: "Release=$rev"
# _distro: variable private to this script. Defaults to build OS like mkosi does.
if [ -n "$distro" ]; then
_distro=${distro}
distribution_def="Distribution=$distro"
else
_distro=$(get_os)
distribution_def=''
fi
if [ -n "$rev" ]; then
release_def="Release=$rev"
else
release_def=''
fi
# distro specific variables
distro_vars="${script_dir}/${_distro}_vars.sh"
# shellcheck source=fedora_vars.sh
# shellcheck source=arch_vars.sh
# shellcheck source=ubuntu_vars.sh
[ -f "$distro_vars" ] && source "$distro_vars"
pushd "$_arg_working_dir" > /dev/null || fail "couldn't cd to $_arg_working_dir"
set_valid_mkosi_ver()
{
"$mkosi_bin" --version
mkosi_ver="$("$mkosi_bin" --version | awk '/mkosi/{ print $2 }')"
# drop the "~devel" suffix present in __version__ when running from
# pre-v25 versions
mkosi_ver="${mkosi_ver%%~*}"
# only look at the major version
mkosi_ver="${mkosi_ver%%.*}"
# Make sure we got a number
test "$mkosi_ver" -eq "$mkosi_ver" ||
fail 'mkosi version %s is not a number' "$mkosi_ver"
}
set_valid_mkosi_ver
# [Packages] was renamed to [Content] in v11, see mkosi/NEWS.md
test "$mkosi_ver" -ge 11 ||
fail 'mkosi version 11 or above is required, found %s' "$mkosi_ver"
kill_guest()
{
# sometimes this can be inadvertently re-entrant
sleep 1
if [ -e "$qmp_sock" ]; then
"$qmp" "$qmp_sock" <<< "quit" > /dev/null
if (( _arg_quiet < 3 )); then
echo "run_qemu: Killed guest via QMP"
fi
fi
}
guest_alive()
{
[ -e "$qmp_sock" ]
}
loop_teardown()
{
loopdev="$(sudo losetup --list | grep "$_arg_rootfs" | awk '{ print $1 }')"
if [ -b "$loopdev" ]; then
sudo umount "${loopdev}p1" || true
sudo umount "${loopdev}p2" || true
sudo losetup -d "$loopdev"
fi
}
cleanup()
{
if [ -x "$qmp" ]; then
kill_guest
fi
loop_teardown
set +x
}
# In POSIX theory, the shell automatically saves for us the $? of the
# "last command before the trap"; see special built-in 'exit' in
# "2. Shell Command Language" on opengroup.org. However this is
# too subtle (two concurrent '$?' now?) and difficult to trace,
# especially when set -e interferes! So, just save that $? ourselves
# and show it clearly in --debug / set -x mode.
trap 'exit_handler $?' EXIT
exit_handler()
{
# 42 "breadcrumb" if forgotten and missing
local err="${1-42}"
# "set -e" can trigger _twice_ and abort the EXIT handler again!
# https://unix.stackexchange.com/questions/667368/bash-change-exit-status-in-trap
# So, don't let some cleanup failure hide the real $err:
cleanup || true
exit "$err"
}
set_topology()
{
case "$1" in
1S|tiny)
num_nvmes=0
num_nodes=1
num_mems=0
num_pmems=0
num_efi_mems=0
num_legacy_pmems=0
;;
2S0|small0)
num_nvmes=0
num_nodes=2
num_mems=0
num_pmems=2
num_efi_mems=0
num_legacy_pmems=0
;;
2S|small)
num_nvmes=0
num_nodes=2
num_mems=2
num_pmems=2
num_efi_mems=1
num_legacy_pmems=1
;;
2S4|med*)
num_nvmes=0
num_nodes=2
num_mems=4
num_pmems=4
num_efi_mems=1
num_legacy_pmems=2
;;
4S|large)
num_nvmes=0
num_nodes=4
num_mems=4
num_pmems=4
num_efi_mems=2
num_legacy_pmems=2
;;
8S|huge)
num_nvmes=0
num_nodes=8
num_mems=8
num_pmems=8
num_efi_mems=2
num_legacy_pmems=2
;;
16S|insane)
num_nvmes=0
num_nodes=16
num_mems=0
num_pmems=16
num_efi_mems=2
num_legacy_pmems=2
;;
16Sb|broken)
num_nvmes=0
num_nodes=16
num_mems=0
num_pmems=32
num_efi_mems=2
num_legacy_pmems=2
;;
gcp)
num_nvmes=0
num_nodes=1
num_mems=0
num_pmems=0
num_efi_mems=0
num_legacy_pmems=0
;;
*)
printf "error: invalid preset: %s\n" "$1"
exit 1
;;
esac
# After presets override individuals
if [[ "$_arg_nvmes" ]]; then
num_nvmes="$_arg_nvmes"
fi
if [[ "$_arg_nodes" ]]; then
num_nodes="$_arg_nodes"
fi
if [[ "$_arg_mems" ]]; then
num_mems="$_arg_mems"
fi
if [[ "$_arg_pmems" ]]; then
num_pmems="$_arg_pmems"
fi
if [[ "$_arg_efi_mems" ]]; then
num_efi_mems="$_arg_efi_mems"
fi
if [[ "$_arg_legacy_pmems" ]]; then
num_legacy_pmems="$_arg_legacy_pmems"
fi
}
process_options_logic()
{
if [[ $_arg_debug == "on" ]]; then
set -x
fi
if [[ $_arg_cxl_test_run == "on" ]]; then
_arg_cxl_debug="on"
_arg_cxl_test="on"
if [[ ! $_arg_autorun ]]; then
_arg_autorun="$cxl_test_script"
fi
if [[ ! $_arg_post_script ]]; then
_arg_post_script="$cxl_results_script"
fi
if [[ ! $_arg_log ]]; then
_arg_log="/tmp/rq_${_arg_instance}.log"
fi
if [[ $_arg_timeout == "0" ]]; then
_arg_timeout="15"
fi
fi
if [[ $_arg_cxl_test == "on" ]]; then
check_ndctl_dir
fi
if [[ $_arg_nfit_test_run == "on" ]]; then
_arg_nfit_test="on"
set_topology "med"
if [[ ! $_arg_autorun ]]; then
_arg_autorun="$nfit_test_script"
fi
if [[ ! $_arg_post_script ]]; then
_arg_post_script="$nfit_results_script"
fi
if [[ ! $_arg_log ]]; then
_arg_log="/tmp/rq_${_arg_instance}.log"
fi
if [[ $_arg_timeout == "0" ]]; then
_arg_timeout="20"
fi
fi
if [[ $_arg_git_qemu == "on" ]]; then
qemu=~/git/qemu/x86_64-softmmu/qemu-system-x86_64
qemu_img=~/git/qemu/qemu-img
qmp=~/git/qemu/scripts/qmp/qmp-shell
# upstream changed where binaries go recently
if [ ! -f "$qemu_img" ]; then
qemu=~/git/qemu/build/qemu-system-x86_64
qemu_img=~/git/qemu/build/qemu-img
fi
if [ ! -x "$qemu" ]; then
fail "expected to find $qemu"
fi
fi
if [[ $_arg_curses == "on" ]]; then
dispmode="-curses"
else
dispmode="-nographic"
fi
set_topology "$_arg_preset"
if [[ $_arg_nfit_test == "on" ]]; then
if (( _arg_quiet < 3 )); then
printf "setting preset to 'med' for nfit_test\n"
fi
set_topology "med"
fi
if [[ "$_arg_mirror" ]]; then
mkosi_opts+=(-m "$_arg_mirror")
fi
if [[ $_arg_kcmd_replace && ! -f "$_arg_kcmd_replace" ]]; then
fail "File not found: $_arg_kcmd_replace"
fi
if [[ $_arg_kcmd_append && ! -f "$_arg_kcmd_append" ]]; then
fail "File not found: $_arg_kcmd_append"
fi
if [[ $_arg_gdb_qemu == "on" ]] && [[ $gdb == "gdb" ]]; then
gdb_extra=("-ex" "handle SIGUSR1 noprint nostop")
fi
if [[ $_arg_timeout -gt 0 ]]; then
if [[ ! -x "$qmp" ]]; then
fail " --timeout requires 'qmp-shell'. $qmp not found"
fi
_arg_qmp="on"
fi
if [[ $_arg_qmp == "on" ]]; then
qmp_sock="/tmp/run_qemu_qmp_$_arg_instance"
fi
# canonicalize _arg_log here so that relative paths don't end up in
# builddir which can be surprising.
if [[ $_arg_log ]]; then
_arg_log=$(realpath "$_arg_log")
fi
if [[ $_arg_gcp == "on" ]]; then
# GCP wants 1GiB aligned images.
# 10G - ~256M (ESP) to make the resulting image exactly 10GiB
rootfssize=10468941824
rootpw="$(openssl rand -base64 12)"
console="ttyS0,38400n8d"
set_topology "gcp"
fi
num_cxl_pmems="$_arg_cxl_pmems"
if (( $num_cxl_pmems > 4 )); then
echo "error: a maximum of 4 CXL memdevs allowed"
exit 1
fi
num_cxl_vmems="$((4 - $num_cxl_pmems))"
if [[ $_arg_kvm = "off" ]]; then
accel="tcg"
fi
# For legacy reasons the "$ndctl" variable has been the "real" switch
# as --ndctl-build is ON by default - and true most of the time.
if [ -n "$ndctl" ]; then
check_ndctl_dir
fi
}
make_install_kernel()
{
local inst_path="$1"
test -n "$kver" || { # can't use fail() when inlined with declare -f
>&2 printf 'ERROR: Undefined $kver in make_install_kernel()\n'
exit 1
}
cat arch/x86_64/boot/bzImage > "$inst_path"/vmlinuz-"$kver"
cp System.map "$inst_path"/System.map-"$kver"
ln -fs vmlinuz-"$kver" "$inst_path"/vmlinuz
ln -fs System.map-"$kver" "$inst_path"/System.map
}
install_build_initrd()
{
inst_prefix="$builddir/mkosi.extra"
inst_path="$builddir/mkosi.extra/boot"
make INSTALL_HDR_PATH="$inst_prefix/usr" headers_install
make_install_kernel "$inst_path"
# Much of the script relies on a kernel named vmlinuz-$kver. This is
# distro specific as the default from Linux is simply "vmlinuz". Adjust
# that here.
[ ! -f "$inst_path/vmlinuz-$kver" ] && cp "$inst_path/vmlinuz" "$inst_path/vmlinuz-$kver"
# mkosi 13 onwards uses 'kernel-install add <uname> to install the kernel,
# and it expects a /lib/modules/$kver/vmlinuz
cp "$inst_path/vmlinuz-$kver" "$inst_prefix/lib/modules/$kver/vmlinuz"
dracut --force --verbose \
--no-hostonly \
--show-modules \
--kver="$kver" \
--kmoddir "$inst_prefix/lib/modules/$kver/" \
--kernel-image "./vmlinux" \
--add "bash systemd kernel-modules fs-lib" \
--omit "iscsi fcoe fcoe-uefi" \
--omit-drivers "nfit libnvdimm nd_pmem" \
"$inst_path/initramfs-$kver.img"
}
__build_kernel()
{
inst_prefix="$builddir/mkosi.extra"
inst_path="$builddir/mkosi.extra/boot"
mod_inst_param="INSTALL_MOD_PATH=$(readlink -f "$inst_prefix")"
quiet=""
if (( _arg_quiet >= 1 )); then
quiet="--quiet"
fi
mkdir -p "$inst_path"
# /lib -> /usr/lib
mkdir -p "${inst_prefix}/usr/lib"
ln -sf usr/lib "${inst_prefix}/lib"
if [[ $_arg_defconfig == "on" ]]; then
make $quiet olddefconfig
make $quiet prepare
fi
kver=$(make -s kernelrelease)
test -n "$kver"
make $quiet -j"$num_build_cpus"
# Install Modules Strip = ims
local ims=""
if [[ $_arg_strip_modules == "on" ]]; then
ims="INSTALL_MOD_STRIP=1"
fi
make $quiet -j"$num_build_cpus" "$mod_inst_param" $ims modules_install
if [[ $_arg_nfit_test == "on" ]]; then
test_path="tools/testing/nvdimm"
make $quiet -j"$num_build_cpus" M="$test_path"
make $quiet "$mod_inst_param" M="$test_path" $ims modules_install
fi
if [[ $_arg_cxl_test == "on" ]]; then
test_path="tools/testing/cxl"
make $quiet -j"$num_build_cpus" M="$test_path"
make $quiet "$mod_inst_param" M="$test_path" $ims modules_install
fi
if [[ $_arg_kern_selftests == "on" ]]; then
selftests_dir=$(readlink -f "$inst_prefix")/$selftests_home
make $quiet -j"$num_build_cpus" -C tools/testing/selftests install INSTALL_PATH="$selftests_dir"
fi
if [[ $_arg_gdb == "on" ]]; then
make $quiet scripts_gdb
fi
if (( _arg_quiet >= 1 )); then
install_build_initrd > /dev/null
else
install_build_initrd
fi
initrd="mkosi.extra/boot/initramfs-$kver.img"
}
build_kernel()
{
if (( _arg_quiet >= 2 )); then
__build_kernel > /dev/null
else
__build_kernel
fi
}
setup_autorun()
{
local prefix="$1"
local bin_dir="/usr/local/bin"
local systemd_dir="/etc/systemd/system/"
local systemd_unit="$systemd_dir/rq_autorun.service"
if [[ ! $_arg_autorun ]]; then
autorun_file="$prefix/$systemd_unit"
rm -f "${autorun_file:?}"
return
fi
mkdir -p "$prefix/$bin_dir"
mkdir -p "$prefix/$systemd_dir"
cp -L "$_arg_autorun" "$prefix/$bin_dir"
chmod +x "$prefix/$bin_dir/${_arg_autorun##*/}"
# TODO: is a target really necessary?
cat <<- EOF > "$prefix/$systemd_dir/rq-custom.target"
[Unit]
Description=run_qemu Custom Target
After=multi-user.target
[Install]
WantedBy=default.target
EOF
cat <<- EOF > "$prefix/$systemd_unit"
[Unit]
Description=run_qemu autorun script
After=multi-user.target
[Service]
Type=simple
User=root
Group=root
PAMName=login
KeyringMode=shared
ExecStart=$bin_dir/${_arg_autorun##*/}
[Install]
RequiredBy=rq-custom.target
WantedBy=default.target
EOF
# Only when building image, not when updating it.
if [ "$(basename "$prefix")" != 'mnt' ]; then
systemd_preset enable rq-custom.target
systemd_preset enable rq_autorun.service
fi
}
get_loopdev()
{
local loopdev num_loopdev
loopdev="$(sudo losetup --list | grep "$_arg_rootfs" | awk '{ print $1 }')"
num_loopdev="$(wc -l <<< "$loopdev")"
if (( num_loopdev != 1 )); then
{ lsblk -f || true
sudo losetup --list
echo "Expected 1 loopdev for $_arg_rootfs, found $num_loopdev."
echo "Try 'sudo losetup -D' to remove any stale loopdevs"
} >&2
exit 1
fi
test -b "$loopdev" || fail "%s is not a block device" "$loopdev"
printf '%s' "$loopdev"
}
# mount_rootfs <partnum>
mount_rootfs()
{
partnum="$1"
mp="mnt"
pushd "$builddir" > /dev/null || exit 1
test -s "$_arg_rootfs"
mkdir -p "$mp"
sudo losetup -Pf "$_arg_rootfs"
# The -P scan is performed in the background (this can be observed with a simple
# 'ls -l /dev/disk/by-loop-ref/')
sleep 2
loopdev=$(get_loopdev)
looppart="${loopdev}p${partnum}"
sleep 1
sudo mount "$looppart" "$mp"
popd > /dev/null || exit 1 # back to kernel tree
}
# umount_rootfs <partnum>
umount_rootfs()
{
partnum="$1"
mp="mnt"
loopdev=$(get_loopdev "$partnum")
looppart="${loopdev}p${partnum}"
sync
sudo umount "$looppart"
sudo rm -rf "$mp"
sudo losetup -d "$loopdev"
}
declare -a kcmd
build_kernel_cmdline()
{
root="$1"
# standard options
kcmd=(
"selinux=0"
"audit=0"
"console=tty0"
"console=$console"
"root=$root"
"ignore_loglevel"
"rw"
"initcall_debug"
"log_buf_len=20M"
"memory_hotplug.memmap_on_memory=force"
)
if [[ $_arg_gdb == "on" ]]; then
kcmd+=(
"nokaslr"
)
fi
if [[ $_arg_cxl_debug == "on" ]]; then
kcmd+=(
"cxl_acpi.dyndbg=+fplm"
"cxl_pci.dyndbg=+fplm"
"cxl_core.dyndbg=+fplm"
"cxl_mem.dyndbg=+fplm"
"cxl_pmem.dyndbg=+fplm"
"cxl_port.dyndbg=+fplm"
"cxl_region.dyndbg=+fplm"
"cxl_test.dyndbg=+fplm"
"cxl_mock.dyndbg=+fplm"
"cxl_mock_mem.dyndbg=+fplm"
)
fi
if [[ $_arg_dax_debug == "on" ]]; then
kcmd+=(
"dax.dyndbg=+fplm"
"dax_cxl.dyndbg=+fplm"
"device_dax.dyndbg=+fplm"
)
fi
if [[ $_arg_nfit_debug == "on" ]]; then
kcmd+=(
"libnvdimm.dyndbg=+fplm"
"nfit.dyndbg=+fplm"
"nfit_test.dyndbg=+fplm"
"nd_pmem.dyndbg=+fplm"
"nd_btt.dyndbg=+fplm"
"dax.dyndbg=+fplm"
"dax_hmem.dyndbg=+fplm"
"nfit_test_iomap.dyndbg=+fplm"
)
fi
if [[ $_arg_nfit_test == "on" ]]; then
num_efi_mems=0
num_legacy_pmems=0
kcmd+=(
"memmap=3G!6G,1G!9G"
"efi_fake_mem=2G@10G:0x40000"
)
fi
if [[ $_arg_gcp == "off" ]]; then
# https://systemd.io/CREDENTIALS/
# This requires systemd v251 or above (commit 4b9a4b017, April 2022)
kcmd+=(
systemd.set_credential=agetty.autologin:root
systemd.set_credential=login.noauth:yes
)
fi
tot_mem="$(((_arg_mem_size / 1024) * (num_mems + num_nodes)))" # in GiB
if (( num_legacy_pmems > 0 )); then
reserve_efi="$((num_efi_mems * efi_mem_size))" # in GiB
reserve_pmem="$((num_legacy_pmems * legacy_pmem_size))" # in GiB
start="$((tot_mem - reserve_efi - reserve_pmem))" #in GiB
declare -a legacy_pmems
cur="$start"
for (( i = 0; i < num_legacy_pmems; i++ )); do
cur=$((cur + (i * legacy_pmem_size)))
legacy_pmems[$i]="${legacy_pmem_size}G!${cur}G"
done
pmems_str="$(printf "%s," "${legacy_pmems[@]}")"
pmems_str="${pmems_str%,}"
kcmd+=( "memmap=$pmems_str" )
fi
if (( num_efi_mems > 0 )); then
reserve="$((num_efi_mems * efi_mem_size))" # in GiB
start="$((tot_mem - reserve))" #in GiB
declare -a efi_mems
cur="$start"
for (( i = 0; i < num_efi_mems; i++ )); do
cur=$((cur + (i * efi_mem_size)))
efi_mems[$i]="${efi_mem_size}G@${cur}G:0x40000"
done
efi_mems_str="$(printf "%s," "${efi_mems[@]}")"
efi_mems_str="${efi_mems_str%,}"
kcmd+=( "efi_fake_mem=$efi_mems_str" )
fi
# process kcmd replacement
if [[ $_arg_kcmd_replace ]]; then
mapfile -t kcmd < <(options_from_file "$_arg_kcmd_replace")
fi
# process kcmd appends
if [[ $_arg_kcmd_append ]]; then
mapfile -t kcmd_extra < <(options_from_file "$_arg_kcmd_append")
fi
# construct the final array
kcmd+=( "${kcmd_extra[@]}" )
}
update_rootfs_boot_kernel()
{
if [[ ! $kver ]]; then
fail "Error: kver not set in update_rootfs_boot_kernel"
fi
mount_rootfs 1 # EFI system partition
conffile="$builddir/mnt/loader/entries/run-qemu-kernel-$kver.conf"
sudo sfdisk -l "${loopdev}" || sudo parted "${loopdev}" print || true
root_partuuid="$(sudo blkid "${loopdev}p2" -o export | awk -F'=' '/^PARTUUID/{ print $2 }')"
if [[ ! $root_partuuid ]]; then
sudo losetup --list
ls -l /dev/disk/by-loop-ref/ || true
sudo blkid "${loopdev}p2" -o export || true
fail "Unable to determine root partition UUID, is the mkosi image 'Bootable'?"
fi
# Note there is no initrd when booting this way, root filesystem must be built-in.
build_kernel_cmdline "PARTUUID=$root_partuuid"
sudo tee "$conffile" > /dev/null <<- EOF
title run-qemu-$_distro ($kver)
version $kver
linux run-qemu-kernel/$kver/vmlinuz
options ${kcmd[*]}
EOF
sudo mkdir -p "$builddir/mnt/run-qemu-kernel/$kver"
sudo cp "$builddir/mkosi.extra/boot/vmlinuz-$kver" "$builddir/mnt/run-qemu-kernel/$kver/vmlinuz"
defconf="$builddir/mnt/loader/loader.conf"
if [ -f "$defconf" ]; then
sudo sed -i -e 's/^#.*timeout.*/timeout 4/' "$defconf"
sudo sed -i -e '/default.*/d' "$defconf"
else
echo "timeout 4" | sudo tee "$defconf"
fi
echo "default run-qemu-kernel-$kver.conf" | sudo tee -a "$defconf"
# Fedora
sudo cp "$ovmf_path"/Shell.efi "$builddir"/mnt/shellx64.efi ||
# Arch Linux
sudo cp /usr/share/edk2-shell/x64/Shell_Full.efi "$builddir"/mnt/shellx64.efi ||
true
umount_rootfs 1
mount_rootfs 2 # Linux root partition
sudo ln -sf "../efi/run-qemu-kernel" "$builddir/mnt/boot/run-qemu-kernel"
umount_rootfs 2
}
setup_depmod()
{
prefix="$1"
depmod_dir="$prefix/etc/depmod.d"
depmod_conf="$depmod_dir/nfit_test.conf"
depmod_cxl_conf="$depmod_dir/cxl_test.conf"
depmod_load_dir="$prefix/etc/modules-load.d"
depmod_load_cxl_conf="$depmod_load_dir/cxl_test.conf"
if [[ $_arg_nfit_test == "on" ]]; then
mkdir -p "$depmod_dir"
cat <<- EOF > "$depmod_conf"
override nfit * extra
override device_dax * extra
override dax_pmem * extra
override dax_pmem_core * extra
override dax_pmem_compat * extra
override libnvdimm * extra
override nd_blk * extra
override nd_btt * extra
override nd_e820 * extra
override nd_pmem * extra
EOF
else
rm -f "$depmod_conf"
fi
if [[ $_arg_cxl_test == "on" ]]; then
mkdir -p "$depmod_dir"
cat <<- EOF > "$depmod_cxl_conf"
override cxl_acpi * extra
override cxl_core * extra
override cxl_pmem * extra
override cxl_mem * extra
override cxl_port * extra
EOF
mkdir -p "$depmod_load_dir"
cat <<- EOF > "$depmod_load_cxl_conf"
cxl_test
EOF
else
rm -f "$depmod_cxl_conf"
rm -f "$depmod_load_cxl_conf"
fi
system_map="$prefix/boot/System.map"
if [ ! -f "$system_map" ]; then
system_map="$prefix/boot/System.map-$kver"
fi
if [ ! -f "$system_map" ]; then
echo "not found: $system_map. Try rebuilding with '-r img'"
return 1
fi
: Warning: symlinks created by this depmod do not survive the move
: to the virtual machine
sudo depmod -b "$prefix" -F "$system_map" -C "$depmod_dir" "$kver"
}
__update_existing_rootfs()
{
inst_prefix="$builddir/mnt"
inst_path="$inst_prefix/boot"
mod_inst_param="INSTALL_MOD_PATH=$(readlink -f "$inst_prefix")"
# Install Modules Strip = ims
local ims=""
if [[ $_arg_strip_modules == "on" ]]; then
ims="INSTALL_MOD_STRIP=1"
fi
mount_rootfs 2 # Linux root partition
if [[ $_arg_nfit_test == "on" ]]; then
test_path="tools/testing/nvdimm"
make -j"$num_build_cpus" M="$test_path"
sudo make "$mod_inst_param" M="$test_path" $ims modules_install
else
sudo rm -rf "$test_path"/*.ko
fi
if [[ $_arg_cxl_test == "on" ]]; then
test_path="tools/testing/cxl"
make -j"$num_build_cpus" M="$test_path"
sudo make "$mod_inst_param" M="$test_path" $ims modules_install
else
sudo rm -rf "$test_path"/*.ko
fi
sudo make "$mod_inst_param" $ims modules_install
sudo make INSTALL_HDR_PATH="$inst_prefix/usr" headers_install
if [[ $_arg_debug == 'on' ]]; then
local _trace_sh='-x'
fi
sudo -E bash $_trace_sh -e -c "$(declare -f make_install_kernel); kver=$kver make_install_kernel $inst_path"
if [[ $_arg_cxl_test == "off" ]]; then
sudo rm -f "$inst_prefix"/usr/lib/modules/"$kver"/extra/cxl_*.ko
fi
if [[ $_arg_ndctl_build == "on" ]]; then
if [ -n "$ndctl" ] && [ -f "$ndctl/meson.build" ]; then
>&2 printf '\n%s\n\n' \
'WARNING: --ndctl-build ignored when updating existing image! Outdated ndctl in the image. Try adding "-r img"'
fi
fi
selftests_dir=$(readlink -f "$inst_prefix")/$selftests_home
if [[ $_arg_kern_selftests == "on" ]]; then
sudo make -j"$num_build_cpus" -C tools/testing/selftests install INSTALL_PATH="$selftests_dir"
else
sudo rm -rf "$selftests_dir"
fi
sudo -E bash $_trace_sh -c "$(declare -f setup_depmod); _arg_nfit_test=$_arg_nfit_test; _arg_cxl_test=$_arg_cxl_test; kver=$kver; setup_depmod $inst_prefix"
sudo -E bash -e $_trace_sh -c "$(declare -f setup_autorun); _arg_autorun=$_arg_autorun; setup_autorun $inst_prefix"
umount_rootfs 2
}
update_existing_rootfs()
{
if (( _arg_quiet >= 2 )); then
__update_existing_rootfs > /dev/null
else
__update_existing_rootfs
fi
}
systemd_preset()
{
state="$1"
servicename="$2"
if [ ! -d "mkosi.extra" ]; then
fail "couldn't find mkosi.extra, are we in an unexpected CWD?"
fi
local preset_dir=mkosi.extra/etc/systemd/system-preset/
mkdir -p "$preset_dir"
{
generatedfrom_header "preset_service $servicename"
cat <<EOFPRESET
# Different distributions tend to have very different presets; override them all
# with a low enough number.
#
# Note changes in *.preset files are ignored until the next 'systemctl preset ...'
# or 'systemctl daemon-reload' command.
$state $servicename
EOFPRESET
} > "$preset_dir/04-run_qemu-$servicename.preset"
}
setup_network()
{
mkdir -p mkosi.extra/etc/systemd/network
cat <<- EOF > mkosi.extra/etc/systemd/network/20-wired.network
[Match]
Name=en*
[Network]
DHCP=yes
EOF