1 files changed, 76 insertions, 0 deletions
diff --git a/tests/functional/aarch64/test_rme_virt.py b/tests/functional/aarch64/test_rme_virt.py
new file mode 100755
index 0000000000..bb603aaa26
--- /dev/null
+++ b/tests/functional/aarch64/test_rme_virt.py
@@ -0,0 +1,76 @@
+#!/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()