| #!/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-86101e5.tar.xz'), |
| 'e42fef8439badb52a071ac446fc33cff4cb7d61314c7a28fdbe61a11e1faad3a') |
| |
| # 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() |
