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77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
#!/usr/bin/env python3
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#
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# Functional test that boots a Realms environment on virt machine and a nested
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# guest VM using it.
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#
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# Copyright (c) 2024 Linaro Ltd.
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#
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# Author: Pierrick Bouvier <pierrick.bouvier@linaro.org>
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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from os.path import join
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from qemu_test import QemuSystemTest, Asset
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from qemu_test import exec_command, wait_for_console_pattern
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from qemu_test import exec_command_and_wait_for_pattern
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class Aarch64RMEVirtMachine(QemuSystemTest):
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# Stack is inspired from:
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# https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/
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# https://github.com/pbo-linaro/qemu-linux-stack/tree/rme_release
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# ./build.sh && ./archive_artifacts.sh out.tar.xz
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ASSET_RME_STACK_VIRT = Asset(
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('https://github.com/pbo-linaro/qemu-linux-stack/'
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'releases/download/build/rme_release-86101e5.tar.xz'),
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'e42fef8439badb52a071ac446fc33cff4cb7d61314c7a28fdbe61a11e1faad3a')
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# This tests the FEAT_RME cpu implementation, by booting a VM supporting it,
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# and launching a nested VM using it.
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def test_aarch64_rme_virt(self):
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self.set_machine('virt')
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self.require_accelerator('tcg')
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self.require_netdev('user')
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self.vm.set_console()
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stack_path_tar = self.ASSET_RME_STACK_VIRT.fetch()
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self.archive_extract(stack_path_tar, format="tar")
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rme_stack = self.scratch_file('.')
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kernel = join(rme_stack, 'out', 'Image')
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bios = join(rme_stack, 'out', 'flash.bin')
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rootfs = join(rme_stack, 'out', 'host.ext4')
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self.vm.add_args('-cpu', 'max,x-rme=on')
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self.vm.add_args('-smp', '2')
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self.vm.add_args('-m', '2G')
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self.vm.add_args('-M', 'virt,acpi=off,'
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'virtualization=on,'
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'secure=on,'
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'gic-version=3')
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self.vm.add_args('-bios', bios)
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self.vm.add_args('-kernel', kernel)
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self.vm.add_args('-drive', f'format=raw,file={rootfs},if=virtio')
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self.vm.add_args('-virtfs',
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f'local,path={rme_stack}/,mount_tag=host,'
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'security_model=mapped,readonly=off')
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# We need to add nokaslr to avoid triggering this sporadic bug:
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# https://gitlab.com/qemu-project/qemu/-/issues/2823
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self.vm.add_args('-append',
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'nokaslr root=/dev/vda rw init=/init --'
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' /host/out/lkvm run --realm'
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' -m 256m'
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' --restricted_mem'
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' --kernel /host/out/Image'
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' --disk /host/out/guest.ext4'
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' --params "root=/dev/vda rw init=/init"')
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self.vm.launch()
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# Wait for host and guest VM boot to complete.
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wait_for_console_pattern(self, 'root@guest',
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failure_message='Kernel panic')
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if __name__ == '__main__':
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QemuSystemTest.main()
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