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# Tests that specifically try to exercise hypervisor features of the
# target machines. powernv supports the Power hypervisor ISA, and
# pseries supports the nested-HV hypervisor spec.
#
# Copyright (c) 2023 IBM Corporation
#
# This work is licensed under the terms of the GNU GPL, version 2 or
# later. See the COPYING file in the top-level directory.
from avocado import skipIf, skipUnless
from avocado.utils import archive
from avocado_qemu import QemuSystemTest
from avocado_qemu import wait_for_console_pattern, exec_command
import os
import time
import subprocess
from datetime import datetime
deps = ["xorriso"] # dependent tools needed in the test setup/box.
def which(tool):
""" looks up the full path for @tool, returns None if not found
or if @tool does not have executable permissions.
"""
paths=os.getenv('PATH')
for p in paths.split(os.path.pathsep):
p = os.path.join(p, tool)
if os.path.exists(p) and os.access(p, os.X_OK):
return p
return None
def missing_deps():
""" returns True if any of the test dependent tools are absent.
"""
for dep in deps:
if which(dep) is None:
return True
return False
# Alpine is a light weight distro that supports QEMU. These tests boot
# that on the machine then run a QEMU guest inside it in KVM mode,
# that runs the same Alpine distro image.
# QEMU packages are downloaded and installed on each test. That's not a
# large download, but it may be more polite to create qcow2 image with
# QEMU already installed and use that.
# XXX: The order of these tests seems to matter, see git blame.
@skipIf(missing_deps(), 'dependencies (%s) not installed' % ','.join(deps))
@skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test sometimes gets stuck due to console handling problem')
@skipUnless(os.getenv('AVOCADO_ALLOW_LARGE_STORAGE'), 'storage limited')
@skipUnless(os.getenv('SPEED') == 'slow', 'runtime limited')
class HypervisorTest(QemuSystemTest):
timeout = 1000
KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 console=hvc0 '
panic_message = 'Kernel panic - not syncing'
good_message = 'VFS: Cannot open root device'
def extract_from_iso(self, iso, path):
"""
Extracts a file from an iso file into the test workdir
:param iso: path to the iso file
:param path: path within the iso file of the file to be extracted
:returns: path of the extracted file
"""
filename = os.path.basename(path)
cwd = os.getcwd()
os.chdir(self.workdir)
with open(filename, "w") as outfile:
cmd = "xorriso -osirrox on -indev %s -cpx %s %s" % (iso, path, filename)
subprocess.run(cmd.split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
os.chdir(cwd)
# Return complete path to extracted file. Because callers to
# extract_from_iso() specify 'path' with a leading slash, it is
# necessary to use os.path.relpath() as otherwise os.path.join()
# interprets it as an absolute path and drops the self.workdir part.
return os.path.normpath(os.path.join(self.workdir, filename))
def setUp(self):
super().setUp()
iso_url = ('https://dl-cdn.alpinelinux.org/alpine/v3.18/releases/ppc64le/alpine-standard-3.18.4-ppc64le.iso')
# Alpine use sha256 so I recalculated this myself
iso_sha256 = 'c26b8d3e17c2f3f0fed02b4b1296589c2390e6d5548610099af75300edd7b3ff'
iso_path = self.fetch_asset(iso_url, asset_hash=iso_sha256,
algorithm = "sha256")
self.iso_path = iso_path
self.vmlinuz = self.extract_from_iso(iso_path, '/boot/vmlinuz-lts')
self.initramfs = self.extract_from_iso(iso_path, '/boot/initramfs-lts')
def do_start_alpine(self):
self.vm.set_console()
kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE
self.vm.add_args("-kernel", self.vmlinuz)
self.vm.add_args("-initrd", self.initramfs)
self.vm.add_args("-smp", "4", "-m", "2g")
self.vm.add_args("-drive", f"file={self.iso_path},format=raw,if=none,id=drive0")
self.vm.launch()
wait_for_console_pattern(self, 'Welcome to Alpine Linux 3.18')
exec_command(self, 'root')
wait_for_console_pattern(self, 'localhost login:')
wait_for_console_pattern(self, 'You may change this message by editing /etc/motd.')
# If the time is wrong, SSL certificates can fail.
exec_command(self, 'date -s "' + datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S' + '"'))
exec_command(self, 'setup-alpine -qe')
wait_for_console_pattern(self, 'Updating repository indexes... done.')
def do_stop_alpine(self):
exec_command(self, 'poweroff')
wait_for_console_pattern(self, 'alpine:~#')
self.vm.wait()
def do_setup_kvm(self):
exec_command(self, 'echo http://dl-cdn.alpinelinux.org/alpine/v3.18/main > /etc/apk/repositories')
wait_for_console_pattern(self, 'alpine:~#')
exec_command(self, 'echo http://dl-cdn.alpinelinux.org/alpine/v3.18/community >> /etc/apk/repositories')
wait_for_console_pattern(self, 'alpine:~#')
exec_command(self, 'apk update')
wait_for_console_pattern(self, 'alpine:~#')
exec_command(self, 'apk add qemu-system-ppc64')
wait_for_console_pattern(self, 'alpine:~#')
exec_command(self, 'modprobe kvm-hv')
wait_for_console_pattern(self, 'alpine:~#')
# This uses the host's block device as the source file for guest block
# device for install media. This is a bit hacky but allows reuse of the
# iso without having a passthrough filesystem configured.
def do_test_kvm(self, hpt=False):
if hpt:
append = 'disable_radix'
else:
append = ''
exec_command(self, 'qemu-system-ppc64 -nographic -smp 2 -m 1g '
'-machine pseries,x-vof=on,accel=kvm '
'-machine cap-cfpc=broken,cap-sbbc=broken,'
'cap-ibs=broken,cap-ccf-assist=off '
'-drive file=/dev/nvme0n1,format=raw,readonly=on '
'-initrd /media/nvme0n1/boot/initramfs-lts '
'-kernel /media/nvme0n1/boot/vmlinuz-lts '
'-append \'usbcore.nousb ' + append + '\'')
# Alpine 3.18 kernel seems to crash in XHCI USB driver.
wait_for_console_pattern(self, 'Welcome to Alpine Linux 3.18')
exec_command(self, 'root')
wait_for_console_pattern(self, 'localhost login:')
wait_for_console_pattern(self, 'You may change this message by editing /etc/motd.')
exec_command(self, 'poweroff >& /dev/null')
wait_for_console_pattern(self, 'localhost:~#')
wait_for_console_pattern(self, 'reboot: Power down')
time.sleep(1)
exec_command(self, '')
wait_for_console_pattern(self, 'alpine:~#')
def test_hv_pseries(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:pseries
:avocado: tags=accel:tcg
"""
self.require_accelerator("tcg")
self.vm.add_args("-accel", "tcg,thread=multi")
self.vm.add_args('-device', 'nvme,serial=1234,drive=drive0')
self.vm.add_args("-machine", "x-vof=on,cap-nested-hv=on")
self.do_start_alpine()
self.do_setup_kvm()
self.do_test_kvm()
self.do_stop_alpine()
def test_hv_pseries_kvm(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:pseries
:avocado: tags=accel:kvm
"""
self.require_accelerator("kvm")
self.vm.add_args("-accel", "kvm")
self.vm.add_args('-device', 'nvme,serial=1234,drive=drive0')
self.vm.add_args("-machine", "x-vof=on,cap-nested-hv=on,cap-ccf-assist=off")
self.do_start_alpine()
self.do_setup_kvm()
self.do_test_kvm()
self.do_stop_alpine()
def test_hv_powernv(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:powernv
:avocado: tags=accel:tcg
"""
self.require_accelerator("tcg")
self.vm.add_args("-accel", "tcg,thread=multi")
self.vm.add_args('-device', 'nvme,bus=pcie.2,addr=0x0,serial=1234,drive=drive0',
'-device', 'e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=pcie.0,addr=0x0',
'-netdev', 'user,id=net0,hostfwd=::20022-:22,hostname=alpine')
self.do_start_alpine()
self.do_setup_kvm()
self.do_test_kvm()
self.do_test_kvm(True)
self.do_stop_alpine()
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