tests/avocado/kvm_xen_guest.py

   1 # KVM Xen guest functional tests
   2 #
   3 # Copyright © 2021 Red Hat, Inc.
   4 # Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   5 #
   6 # Author:
   7 #  David Woodhouse <dwmw2@infradead.org>
   8 #  Alex Bennée <alex.bennee@linaro.org>
   9 #
  10 # SPDX-License-Identifier: GPL-2.0-or-later
  11
  12 import os
  13
  14 from qemu.machine import machine
  15
  16 from avocado_qemu import LinuxSSHMixIn
  17 from avocado_qemu import QemuSystemTest
  18 from avocado_qemu import wait_for_console_pattern
  19
  20 class KVMXenGuest(QemuSystemTest, LinuxSSHMixIn):
  21     """
  22     :avocado: tags=arch:x86_64
  23     :avocado: tags=machine:q35
  24     :avocado: tags=accel:kvm
  25     :avocado: tags=kvm_xen_guest
  26     """
  27
  28     KERNEL_DEFAULT = 'printk.time=0 root=/dev/xvda console=ttyS0'
  29
  30     kernel_path = None
  31     kernel_params = None
  32
  33     # Fetch assets from the kvm-xen-guest subdir of my shared test
  34     # images directory on fileserver.linaro.org where you can find
  35     # build instructions for how they where assembled.
  36     def get_asset(self, name, sha1):
  37         base_url = ('https://fileserver.linaro.org/s/'
  38                     'kE4nCFLdQcoBF9t/download?'
  39                     'path=%2Fkvm-xen-guest&files=' )
  40         url = base_url + name
  41         # use explicit name rather than failing to neatly parse the
  42         # URL into a unique one
  43         return self.fetch_asset(name=name, locations=(url), asset_hash=sha1)
  44
  45     def common_vm_setup(self):
  46         # We also catch lack of KVM_XEN support if we fail to launch
  47         self.require_accelerator("kvm")
  48
  49         self.vm.set_console()
  50
  51         self.vm.add_args("-accel", "kvm,xen-version=0x4000a,kernel-irqchip=split")
  52         self.vm.add_args("-smp", "2")
  53
  54         self.kernel_path = self.get_asset("bzImage",
  55                                           "367962983d0d32109998a70b45dcee4672d0b045")
  56         self.rootfs = self.get_asset("rootfs.ext4",
  57                                      "f1478401ea4b3fa2ea196396be44315bab2bb5e4")
  58
  59     def run_and_check(self):
  60         self.vm.add_args('-kernel', self.kernel_path,
  61                          '-append', self.kernel_params,
  62                          '-drive',  f"file={self.rootfs},if=none,snapshot=on,format=raw,id=drv0",
  63                          '-device', 'xen-disk,drive=drv0,vdev=xvda',
  64                          '-device', 'virtio-net-pci,netdev=unet',
  65                          '-netdev', 'user,id=unet,hostfwd=:127.0.0.1:0-:22')
  66
  67         try:
  68             self.vm.launch()
  69         except machine.VMLaunchFailure as e:
  70             if "Xen HVM guest support not present" in e.output:
  71                 self.cancel("KVM Xen support is not present "
  72                             "(need v5.12+ kernel with CONFIG_KVM_XEN)")
  73             elif "Property 'kvm-accel.xen-version' not found" in e.output:
  74                 self.cancel("QEMU not built with CONFIG_XEN_EMU support")
  75             else:
  76                 raise e
  77
  78         self.log.info('VM launched, waiting for sshd')
  79         console_pattern = 'Starting dropbear sshd: OK'
  80         wait_for_console_pattern(self, console_pattern, 'Oops')
  81         self.log.info('sshd ready')
  82         self.ssh_connect('root', '', False)
  83
  84         self.ssh_command('cat /proc/cmdline')
  85         self.ssh_command('dmesg | grep -e "Grant table initialized"')
  86
  87     def test_kvm_xen_guest(self):
  88         """
  89         :avocado: tags=kvm_xen_guest
  90         """
  91
  92         self.common_vm_setup()
  93
  94         self.kernel_params = (self.KERNEL_DEFAULT +
  95                               ' xen_emul_unplug=ide-disks')
  96         self.run_and_check()
  97         self.ssh_command('grep xen-pirq.*msi /proc/interrupts')
  98
  99     def test_kvm_xen_guest_nomsi(self):
 100         """
 101         :avocado: tags=kvm_xen_guest_nomsi
 102         """
 103
 104         self.common_vm_setup()
 105
 106         self.kernel_params = (self.KERNEL_DEFAULT +
 107                               ' xen_emul_unplug=ide-disks pci=nomsi')
 108         self.run_and_check()
 109         self.ssh_command('grep xen-pirq.* /proc/interrupts')
 110
 111     def test_kvm_xen_guest_noapic_nomsi(self):
 112         """
 113         :avocado: tags=kvm_xen_guest_noapic_nomsi
 114         """
 115
 116         self.common_vm_setup()
 117
 118         self.kernel_params = (self.KERNEL_DEFAULT +
 119                               ' xen_emul_unplug=ide-disks noapic pci=nomsi')
 120         self.run_and_check()
 121         self.ssh_command('grep xen-pirq /proc/interrupts')
 122
 123     def test_kvm_xen_guest_vapic(self):
 124         """
 125         :avocado: tags=kvm_xen_guest_vapic
 126         """
 127
 128         self.common_vm_setup()
 129         self.vm.add_args('-cpu', 'host,+xen-vapic')
 130         self.kernel_params = (self.KERNEL_DEFAULT +
 131                               ' xen_emul_unplug=ide-disks')
 132         self.run_and_check()
 133         self.ssh_command('grep xen-pirq /proc/interrupts')
 134         self.ssh_command('grep PCI-MSI /proc/interrupts')
 135
 136     def test_kvm_xen_guest_novector(self):
 137         """
 138         :avocado: tags=kvm_xen_guest_novector
 139         """
 140
 141         self.common_vm_setup()
 142         self.kernel_params = (self.KERNEL_DEFAULT +
 143                               ' xen_emul_unplug=ide-disks' +
 144                               ' xen_no_vector_callback')
 145         self.run_and_check()
 146         self.ssh_command('grep xen-platform-pci /proc/interrupts')
 147
 148     def test_kvm_xen_guest_novector_nomsi(self):
 149         """
 150         :avocado: tags=kvm_xen_guest_novector_nomsi
 151         """
 152
 153         self.common_vm_setup()
 154
 155         self.kernel_params = (self.KERNEL_DEFAULT +
 156                               ' xen_emul_unplug=ide-disks pci=nomsi' +
 157                               ' xen_no_vector_callback')
 158         self.run_and_check()
 159         self.ssh_command('grep xen-platform-pci /proc/interrupts')
 160
 161     def test_kvm_xen_guest_novector_noapic(self):
 162         """
 163         :avocado: tags=kvm_xen_guest_novector_noapic
 164         """
 165
 166         self.common_vm_setup()
 167         self.kernel_params = (self.KERNEL_DEFAULT +
 168                               ' xen_emul_unplug=ide-disks' +
 169                               ' xen_no_vector_callback noapic')
 170         self.run_and_check()
 171         self.ssh_command('grep xen-platform-pci /proc/interrupts')