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#!/bin/bash
# -----------------------------------------------------------------------------
#
# Copyright (c) 2017..2021 bwLehrpool-Projektteam
#
# This program/file is free software distributed under the GPL version 2.
# See https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
#
# If you have any feedback please consult https://bwlehrpool.de and
# send your feedback to support@bwlehrpool.de.
#
# General information about bwLehrpool can be found at https://bwlehrpool.de
#
# -----------------------------------------------------------------------------
# systemd-qemu_env
# - This is the preparation script for the configuration of QEMU on Linux.
################################################################################
#
# load general KVM module
#
modprobe "kvm" || slxlog "qemu" "Could not load 'kvm' kernel modul!"
#
# load CPU specific KVM implementation
#
virt=$(egrep -m1 -w '^flags[[:blank:]]*:' /proc/cpuinfo | egrep -wo '(vmx|svm)') || true
if [ "${virt}" = "vmx" ]; then
kmod="kvm_intel"
elif [ "${virt}" = "svm" ]; then
kmod="kvm_amd"
else
slxlog "qemu" "CPU does not support KVM extensions!"
exit 1
fi
modprobe "${kmod}" || slxlog "qemu" "Could not load '${kmod}' kernel modul!"
#
# check that the KVM exposed device exists
#
if [ ! -e /dev/kvm ]; then
slxlog "qemu" "/dev/kvm not found! Missing kvm kernel module(s)?"
exit 1
fi
#
# create and setup Intel GVT-g mediated device instance for passthrough if Intel GVT-g is enabled
#
source /opt/openslx/vmchooser/plugins/qemukvm/includes/kernel-cmdln.inc
source /opt/openslx/vmchooser/plugins/qemukvm/includes/passthrough-mdev.inc
if passthrough_mdev_enabled; then
# check if passthrough is configured properly
if ! passthrough_mdev_check; then
slxlog "qemu" "mediated device passthrough is enabled but not setup properly!"
exit 2;
fi
# load required kernel modules for mediated device passthrough
modprobe "vfio-mdev" || { slxlog "qemu" "Could not load 'vfio-mdev' kernel modul!"; exit 3; }
modprobe "kvmgt" || { slxlog "qemu" "Could not load 'kvmgt' kernel modul!"; exit 4; }
# get Intel integrated GPU mediated device for passthrough
local pt_mdev_device="$(passthrough_mdev_device_get_intel_igd)"
if [ -z "${pt_mdev_device}" ]; then
slxlog "qemu" "Could find any Intel integrated GPU with mediated device (Intel GVT-g) support!"
exit 5;
fi
# get Intel GVT-g mediated device instance type
local pt_mdev_device_type="$(passthrough_mdev_type_get "${pt_mdev_device}")"
if [ -z "${pt_mdev_device_type}" ]; then
slxlog "qemu" "Could obtain the mediated device instance type of the Intel integrated GPU (${pt_mdev_device})"
exit 6;
fi
# generate UUID for Intel GVT-g mediated device instance
local pt_mdev_uuid="$(uuidgen)"
# create Intel GVT-g mediated device instance
passthrough_mdev_instance_create "${pt_mdev_device}" "${pt_mdev_device_type}" "${pt_mdev_uuid}"
if [ "${?}" -eq 0 ]; then
slxlog "qemu" "Successfully created Intel GVT-g mediated device instance (${pt_mdev_uuid})"
else
slxlog "qemu" "Failed to create Intel GVT-g mediated device instance!"
fi
fi
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