xref: /openbmc/qemu/tests/functional/test_x86_64_kvm_xen.py (revision be2797cf76888903dbe1bec8d17d217f1e948bb3) 
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    ASSET_KERNEL = Asset('https://share.linaro.org/downloadFile?id=UG0V8dzzHrrHb9X',
27                         'ec0ad7bb8c33c5982baee0a75505fe7dbf29d3ff5d44258204d6307c6fe0132a')
28
29    ASSET_ROOTFS = Asset('https://share.linaro.org/downloadFile?id=VwLRKDXKFl6oKti',
30                         'b11045d649006c649c184e93339aaa41a8fe20a1a86620af70323252eb29e40b')
31
32    def common_vm_setup(self):
33        # We also catch lack of KVM_XEN support if we fail to launch
34        self.require_accelerator("kvm")
35        self.require_netdev('user')
36
37        self.vm.set_console()
38
39        self.vm.add_args("-accel", "kvm,xen-version=0x4000a,kernel-irqchip=split")
40        self.vm.add_args("-smp", "2")
41
42        self.kernel_path = self.ASSET_KERNEL.fetch()
43        self.rootfs = self.ASSET_ROOTFS.fetch()
44
45    def run_and_check(self):
46        self.vm.add_args('-kernel', self.kernel_path,
47                         '-append', self.kernel_params,
48                         '-drive',  f"file={self.rootfs},if=none,snapshot=on,format=raw,id=drv0",
49                         '-device', 'xen-disk,drive=drv0,vdev=xvda',
50                         '-device', 'virtio-net-pci,netdev=unet',
51                         '-netdev', 'user,id=unet,hostfwd=:127.0.0.1:0-:22')
52
53        try:
54            self.vm.launch()
55        except machine.VMLaunchFailure as e:
56            if "Xen HVM guest support not present" in e.output:
57                self.skipTest("KVM Xen support is not present "
58                              "(need v5.12+ kernel with CONFIG_KVM_XEN)")
59            elif "Property 'kvm-accel.xen-version' not found" in e.output:
60                self.skipTest("QEMU not built with CONFIG_XEN_EMU support")
61            else:
62                raise e
63
64        self.log.info('VM launched, waiting for sshd')
65        console_pattern = 'Starting dropbear sshd: OK'
66        wait_for_console_pattern(self, console_pattern, 'Oops')
67        self.log.info('sshd ready')
68
69        exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline', 'xen')
70        exec_command_and_wait_for_pattern(self, 'dmesg | grep "Grant table"',
71                                          'Grant table initialized')
72        wait_for_console_pattern(self, '#', 'Oops')
73
74    def test_kvm_xen_guest(self):
75        self.common_vm_setup()
76
77        self.kernel_params = (self.KERNEL_DEFAULT +
78                              ' xen_emul_unplug=ide-disks')
79        self.run_and_check()
80        exec_command_and_wait_for_pattern(self,
81                                'grep xen-pirq.*msi /proc/interrupts',
82                                'virtio0-output')
83
84    def test_kvm_xen_guest_nomsi(self):
85        self.common_vm_setup()
86
87        self.kernel_params = (self.KERNEL_DEFAULT +
88                              ' xen_emul_unplug=ide-disks pci=nomsi')
89        self.run_and_check()
90        exec_command_and_wait_for_pattern(self,
91                                'grep xen-pirq.* /proc/interrupts',
92                                'virtio0')
93
94    def test_kvm_xen_guest_noapic_nomsi(self):
95        self.common_vm_setup()
96
97        self.kernel_params = (self.KERNEL_DEFAULT +
98                              ' xen_emul_unplug=ide-disks noapic pci=nomsi')
99        self.run_and_check()
100        exec_command_and_wait_for_pattern(self,
101                                'grep xen-pirq /proc/interrupts',
102                                'virtio0')
103
104    def test_kvm_xen_guest_vapic(self):
105        self.common_vm_setup()
106        self.vm.add_args('-cpu', 'host,+xen-vapic')
107        self.kernel_params = (self.KERNEL_DEFAULT +
108                              ' xen_emul_unplug=ide-disks')
109        self.run_and_check()
110        exec_command_and_wait_for_pattern(self,
111                                'grep xen-pirq /proc/interrupts',
112                                'acpi')
113        wait_for_console_pattern(self, '#')
114        exec_command_and_wait_for_pattern(self,
115                                'grep PCI-MSI /proc/interrupts',
116                                'virtio0-output')
117
118    def test_kvm_xen_guest_novector(self):
119        self.common_vm_setup()
120        self.kernel_params = (self.KERNEL_DEFAULT +
121                              ' xen_emul_unplug=ide-disks' +
122                              ' xen_no_vector_callback')
123        self.run_and_check()
124        exec_command_and_wait_for_pattern(self,
125                                'grep xen-platform-pci /proc/interrupts',
126                                'fasteoi')
127
128    def test_kvm_xen_guest_novector_nomsi(self):
129        self.common_vm_setup()
130
131        self.kernel_params = (self.KERNEL_DEFAULT +
132                              ' xen_emul_unplug=ide-disks pci=nomsi' +
133                              ' xen_no_vector_callback')
134        self.run_and_check()
135        exec_command_and_wait_for_pattern(self,
136                                'grep xen-platform-pci /proc/interrupts',
137                                'IO-APIC')
138
139    def test_kvm_xen_guest_novector_noapic(self):
140        self.common_vm_setup()
141        self.kernel_params = (self.KERNEL_DEFAULT +
142                              ' xen_emul_unplug=ide-disks' +
143                              ' xen_no_vector_callback noapic')
144        self.run_and_check()
145        exec_command_and_wait_for_pattern(self,
146                                'grep xen-platform-pci /proc/interrupts',
147                                'XT-PIC')
148
149if __name__ == '__main__':
150    QemuSystemTest.main()
151