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#!/usr/bin/env python3
#
# Functional test that boots a Realms environment on virt machine and a nested
# guest VM using it.
#
# Copyright (c) 2024 Linaro Ltd.
#
# Author: Pierrick Bouvier <pierrick.bouvier@linaro.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
from os.path import join
from qemu_test import QemuSystemTest, Asset
from qemu_test import exec_command, wait_for_console_pattern
from qemu_test import exec_command_and_wait_for_pattern
class Aarch64RMEVirtMachine(QemuSystemTest):
# Stack is inspired from:
# https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/
# https://github.com/pbo-linaro/qemu-linux-stack/tree/rme_release
# ./build.sh && ./archive_artifacts.sh out.tar.xz
ASSET_RME_STACK_VIRT = Asset(
('https://github.com/pbo-linaro/qemu-linux-stack/'
'releases/download/build/rme_release-56bc99e.tar.xz'),
'0e3dc6b8a4b828dbae09c951a40dcb710eded084b32432b50c69cf4173ffa4be')
# This tests the FEAT_RME cpu implementation, by booting a VM supporting it,
# and launching a nested VM using it.
def test_aarch64_rme_virt(self):
self.set_machine('virt')
self.require_accelerator('tcg')
self.require_netdev('user')
self.vm.set_console()
stack_path_tar = self.ASSET_RME_STACK_VIRT.fetch()
self.archive_extract(stack_path_tar, format="tar")
rme_stack = self.scratch_file('.')
kernel = join(rme_stack, 'out', 'Image')
bios = join(rme_stack, 'out', 'flash.bin')
rootfs = join(rme_stack, 'out', 'host.ext4')
self.vm.add_args('-cpu', 'max,x-rme=on')
self.vm.add_args('-smp', '2')
self.vm.add_args('-m', '2G')
self.vm.add_args('-M', 'virt,acpi=off,'
'virtualization=on,'
'secure=on,'
'gic-version=3')
self.vm.add_args('-bios', bios)
self.vm.add_args('-kernel', kernel)
self.vm.add_args('-drive', f'format=raw,file={rootfs},if=virtio')
self.vm.add_args('-virtfs',
f'local,path={rme_stack}/,mount_tag=host,'
'security_model=mapped,readonly=off')
# We need to add nokaslr to avoid triggering this sporadic bug:
# https://gitlab.com/qemu-project/qemu/-/issues/2823
self.vm.add_args('-append',
'nokaslr root=/dev/vda rw init=/init --'
' /host/out/lkvm run --realm'
' -m 256m'
' --restricted_mem'
' --kernel /host/out/Image'
' --disk /host/out/guest.ext4'
' --params "root=/dev/vda rw init=/init"')
self.vm.launch()
# Wait for host and guest VM boot to complete.
wait_for_console_pattern(self, 'root@guest',
failure_message='Kernel panic')
if __name__ == '__main__':
QemuSystemTest.main()
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