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# KVM Xen guest functional tests
#
# Copyright © 2021 Red Hat, Inc.
# Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Author:
# David Woodhouse <dwmw2@infradead.org>
# Alex Bennée <alex.bennee@linaro.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
import os
from qemu.machine import machine
from avocado_qemu import LinuxSSHMixIn
from avocado_qemu import QemuSystemTest
from avocado_qemu import wait_for_console_pattern
class KVMXenGuest(QemuSystemTest, LinuxSSHMixIn):
"""
:avocado: tags=arch:x86_64
:avocado: tags=machine:q35
:avocado: tags=accel:kvm
:avocado: tags=kvm_xen_guest
"""
KERNEL_DEFAULT = 'printk.time=0 root=/dev/xvda console=ttyS0'
kernel_path = None
kernel_params = None
# Fetch assets from the kvm-xen-guest subdir of my shared test
# images directory on fileserver.linaro.org where you can find
# build instructions for how they where assembled.
def get_asset(self, name, sha1):
base_url = ('https://fileserver.linaro.org/s/'
'kE4nCFLdQcoBF9t/download?'
'path=%2Fkvm-xen-guest&files=' )
url = base_url + name
# use explicit name rather than failing to neatly parse the
# URL into a unique one
return self.fetch_asset(name=name, locations=(url), asset_hash=sha1)
def common_vm_setup(self):
# We also catch lack of KVM_XEN support if we fail to launch
self.require_accelerator("kvm")
self.vm.set_console()
self.vm.add_args("-accel", "kvm,xen-version=0x4000a,kernel-irqchip=split")
self.vm.add_args("-smp", "2")
self.kernel_path = self.get_asset("bzImage",
"367962983d0d32109998a70b45dcee4672d0b045")
self.rootfs = self.get_asset("rootfs.ext4",
"f1478401ea4b3fa2ea196396be44315bab2bb5e4")
def run_and_check(self):
self.vm.add_args('-kernel', self.kernel_path,
'-append', self.kernel_params,
'-drive', f"file={self.rootfs},if=none,format=raw,id=drv0",
'-device', 'xen-disk,drive=drv0,vdev=xvda',
'-device', 'virtio-net-pci,netdev=unet',
'-netdev', 'user,id=unet,hostfwd=:127.0.0.1:0-:22')
try:
self.vm.launch()
except machine.VMLaunchFailure as e:
if "Xen HVM guest support not present" in e.output:
self.cancel("KVM Xen support is not present "
"(need v5.12+ kernel with CONFIG_KVM_XEN)")
elif "Property 'kvm-accel.xen-version' not found" in e.output:
self.cancel("QEMU not built with CONFIG_XEN_EMU support")
else:
raise e
self.log.info('VM launched, waiting for sshd')
console_pattern = 'Starting dropbear sshd: OK'
wait_for_console_pattern(self, console_pattern, 'Oops')
self.log.info('sshd ready')
self.ssh_connect('root', '', False)
self.ssh_command('cat /proc/cmdline')
self.ssh_command('dmesg | grep -e "Grant table initialized"')
def test_kvm_xen_guest(self):
"""
:avocado: tags=kvm_xen_guest
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks')
self.run_and_check()
self.ssh_command('grep xen-pirq.*msi /proc/interrupts')
def test_kvm_xen_guest_nomsi(self):
"""
:avocado: tags=kvm_xen_guest_nomsi
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks pci=nomsi')
self.run_and_check()
self.ssh_command('grep xen-pirq.* /proc/interrupts')
def test_kvm_xen_guest_noapic_nomsi(self):
"""
:avocado: tags=kvm_xen_guest_noapic_nomsi
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks noapic pci=nomsi')
self.run_and_check()
self.ssh_command('grep xen-pirq /proc/interrupts')
def test_kvm_xen_guest_vapic(self):
"""
:avocado: tags=kvm_xen_guest_vapic
"""
self.common_vm_setup()
self.vm.add_args('-cpu', 'host,+xen-vapic')
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks')
self.run_and_check()
self.ssh_command('grep xen-pirq /proc/interrupts')
self.ssh_command('grep PCI-MSI /proc/interrupts')
def test_kvm_xen_guest_novector(self):
"""
:avocado: tags=kvm_xen_guest_novector
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks' +
' xen_no_vector_callback')
self.run_and_check()
self.ssh_command('grep xen-platform-pci /proc/interrupts')
def test_kvm_xen_guest_novector_nomsi(self):
"""
:avocado: tags=kvm_xen_guest_novector_nomsi
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks pci=nomsi' +
' xen_no_vector_callback')
self.run_and_check()
self.ssh_command('grep xen-platform-pci /proc/interrupts')
def test_kvm_xen_guest_novector_noapic(self):
"""
:avocado: tags=kvm_xen_guest_novector_noapic
"""
self.common_vm_setup()
self.kernel_params = (self.KERNEL_DEFAULT +
' xen_emul_unplug=ide-disks' +
' xen_no_vector_callback noapic')
self.run_and_check()
self.ssh_command('grep xen-platform-pci /proc/interrupts')
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