xref: /qemu/tests/functional/test_x86_64_kvm_xen.py (revision 99fb9256b761c3cec4a82d2e9597b6cf24ae1285) 
1#!/usr/bin/env python3
2#
3# KVM Xen guest functional tests
4#
5# Copyright © 2021 Red Hat, Inc.
6# Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
7#
8# Author:
9#  David Woodhouse <dwmw2@infradead.org>
10#  Alex Bennée <alex.bennee@linaro.org>
11#
12# SPDX-License-Identifier: GPL-2.0-or-later
13
14from qemu.machine import machine
15
16from qemu_test import QemuSystemTest, Asset, exec_command_and_wait_for_pattern
17from qemu_test import wait_for_console_pattern
18
19class KVMXenGuest(QemuSystemTest):
20
21    KERNEL_DEFAULT = 'printk.time=0 root=/dev/xvda console=ttyS0 quiet'
22
23    kernel_path = None
24    kernel_params = None
25
26    # Fetch assets from the kvm-xen-guest subdir of my shared test
27    # images directory on fileserver.linaro.org where you can find
28    # build instructions for how they where assembled.
29    ASSET_KERNEL = Asset(
30        ('https://fileserver.linaro.org/s/kE4nCFLdQcoBF9t/download?'
31         'path=%2Fkvm-xen-guest&files=bzImage'),
32        'ec0ad7bb8c33c5982baee0a75505fe7dbf29d3ff5d44258204d6307c6fe0132a')
33
34    ASSET_ROOTFS = Asset(
35        ('https://fileserver.linaro.org/s/kE4nCFLdQcoBF9t/download?'
36         'path=%2Fkvm-xen-guest&files=rootfs.ext4'),
37        'b11045d649006c649c184e93339aaa41a8fe20a1a86620af70323252eb29e40b')
38
39    def common_vm_setup(self):
40        # We also catch lack of KVM_XEN support if we fail to launch
41        self.require_accelerator("kvm")
42        self.require_netdev('user')
43
44        self.vm.set_console()
45
46        self.vm.add_args("-accel", "kvm,xen-version=0x4000a,kernel-irqchip=split")
47        self.vm.add_args("-smp", "2")
48
49        self.kernel_path = self.ASSET_KERNEL.fetch()
50        self.rootfs = self.ASSET_ROOTFS.fetch()
51
52    def run_and_check(self):
53        self.vm.add_args('-kernel', self.kernel_path,
54                         '-append', self.kernel_params,
55                         '-drive',  f"file={self.rootfs},if=none,snapshot=on,format=raw,id=drv0",
56                         '-device', 'xen-disk,drive=drv0,vdev=xvda',
57                         '-device', 'virtio-net-pci,netdev=unet',
58                         '-netdev', 'user,id=unet,hostfwd=:127.0.0.1:0-:22')
59
60        try:
61            self.vm.launch()
62        except machine.VMLaunchFailure as e:
63            if "Xen HVM guest support not present" in e.output:
64                self.skipTest("KVM Xen support is not present "
65                              "(need v5.12+ kernel with CONFIG_KVM_XEN)")
66            elif "Property 'kvm-accel.xen-version' not found" in e.output:
67                self.skipTest("QEMU not built with CONFIG_XEN_EMU support")
68            else:
69                raise e
70
71        self.log.info('VM launched, waiting for sshd')
72        console_pattern = 'Starting dropbear sshd: OK'
73        wait_for_console_pattern(self, console_pattern, 'Oops')
74        self.log.info('sshd ready')
75
76        exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline', 'xen')
77        exec_command_and_wait_for_pattern(self, 'dmesg | grep "Grant table"',
78                                          'Grant table initialized')
79        wait_for_console_pattern(self, '#', 'Oops')
80
81    def test_kvm_xen_guest(self):
82        self.common_vm_setup()
83
84        self.kernel_params = (self.KERNEL_DEFAULT +
85                              ' xen_emul_unplug=ide-disks')
86        self.run_and_check()
87        exec_command_and_wait_for_pattern(self,
88                                'grep xen-pirq.*msi /proc/interrupts',
89                                'virtio0-output')
90
91    def test_kvm_xen_guest_nomsi(self):
92        self.common_vm_setup()
93
94        self.kernel_params = (self.KERNEL_DEFAULT +
95                              ' xen_emul_unplug=ide-disks pci=nomsi')
96        self.run_and_check()
97        exec_command_and_wait_for_pattern(self,
98                                'grep xen-pirq.* /proc/interrupts',
99                                'virtio0')
100
101    def test_kvm_xen_guest_noapic_nomsi(self):
102        self.common_vm_setup()
103
104        self.kernel_params = (self.KERNEL_DEFAULT +
105                              ' xen_emul_unplug=ide-disks noapic pci=nomsi')
106        self.run_and_check()
107        exec_command_and_wait_for_pattern(self,
108                                'grep xen-pirq /proc/interrupts',
109                                'virtio0')
110
111    def test_kvm_xen_guest_vapic(self):
112        self.common_vm_setup()
113        self.vm.add_args('-cpu', 'host,+xen-vapic')
114        self.kernel_params = (self.KERNEL_DEFAULT +
115                              ' xen_emul_unplug=ide-disks')
116        self.run_and_check()
117        exec_command_and_wait_for_pattern(self,
118                                'grep xen-pirq /proc/interrupts',
119                                'acpi')
120        wait_for_console_pattern(self, '#')
121        exec_command_and_wait_for_pattern(self,
122                                'grep PCI-MSI /proc/interrupts',
123                                'virtio0-output')
124
125    def test_kvm_xen_guest_novector(self):
126        self.common_vm_setup()
127        self.kernel_params = (self.KERNEL_DEFAULT +
128                              ' xen_emul_unplug=ide-disks' +
129                              ' xen_no_vector_callback')
130        self.run_and_check()
131        exec_command_and_wait_for_pattern(self,
132                                'grep xen-platform-pci /proc/interrupts',
133                                'fasteoi')
134
135    def test_kvm_xen_guest_novector_nomsi(self):
136        self.common_vm_setup()
137
138        self.kernel_params = (self.KERNEL_DEFAULT +
139                              ' xen_emul_unplug=ide-disks pci=nomsi' +
140                              ' xen_no_vector_callback')
141        self.run_and_check()
142        exec_command_and_wait_for_pattern(self,
143                                'grep xen-platform-pci /proc/interrupts',
144                                'IO-APIC')
145
146    def test_kvm_xen_guest_novector_noapic(self):
147        self.common_vm_setup()
148        self.kernel_params = (self.KERNEL_DEFAULT +
149                              ' xen_emul_unplug=ide-disks' +
150                              ' xen_no_vector_callback noapic')
151        self.run_and_check()
152        exec_command_and_wait_for_pattern(self,
153                                'grep xen-platform-pci /proc/interrupts',
154                                'XT-PIC')
155
156if __name__ == '__main__':
157    QemuSystemTest.main()
158