tests/avocado: Test Xen guest support under KVM
Exercise guests with a few different modes for interrupt delivery. In particular we want to cover: • Xen event channel delivery via GSI to the I/O APIC • Xen event channel delivery via GSI to the i8259 PIC • MSIs routed to PIRQ event channels • GSIs routed to PIRQ event channels As well as some variants of normal non-Xen stuff like MSI to vAPIC and PCI INTx going to the I/O APIC and PIC, which ought to still work even in Xen mode. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230403134920.2132362-12-alex.bennee@linaro.org>
This commit is contained in:
David Woodhouse
Alex Bennée
parent
fc9988916a
commit
c8cb603293
171
tests/avocado/kvm_xen_guest.py
Normal file
171
tests/avocado/kvm_xen_guest.py
Normal file
@ -0,0 +1,171 @@
|
||||
# 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')
|
||||
Loading…
Reference in New Issue
Block a user