tests/avocado: ppc add hypervisor tests
The powernv and pseries machines both provide hypervisor facilities that are supported by KVM. This is a large and complicated set of features that don't get much system-level testing in ppc tests. Add a new test case for these which runs QEMU KVM inside the target. This downloads an Alpine VM image, boots it and downloads and installs the qemu package, then boots a virtual machine under it, re-using the original Alpine VM image. Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
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Nicholas Piggin
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@ -1526,6 +1526,7 @@ F: tests/qtest/libqos/*spapr*
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F: tests/qtest/rtas*
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F: tests/qtest/libqos/rtas*
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F: tests/avocado/ppc_pseries.py
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F: tests/avocado/ppc_hv_tests.py
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PowerNV (Non-Virtualized)
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M: Cédric Le Goater <clg@kaod.org>
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202
tests/avocado/ppc_hv_tests.py
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202
tests/avocado/ppc_hv_tests.py
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# Tests that specifically try to exercise hypervisor features of the
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# target machines. powernv supports the Power hypervisor ISA, and
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# pseries supports the nested-HV hypervisor spec.
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#
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# Copyright (c) 2023 IBM Corporation
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or
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# later. See the COPYING file in the top-level directory.
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from avocado import skipIf, skipUnless
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from avocado.utils import archive
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from avocado_qemu import QemuSystemTest
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from avocado_qemu import wait_for_console_pattern, exec_command
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import os
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import time
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import subprocess
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deps = ["xorriso"] # dependent tools needed in the test setup/box.
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def which(tool):
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""" looks up the full path for @tool, returns None if not found
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or if @tool does not have executable permissions.
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"""
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paths=os.getenv('PATH')
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for p in paths.split(os.path.pathsep):
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p = os.path.join(p, tool)
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if os.path.exists(p) and os.access(p, os.X_OK):
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return p
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return None
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def missing_deps():
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""" returns True if any of the test dependent tools are absent.
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"""
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for dep in deps:
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if which(dep) is None:
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return True
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return False
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# Alpine is a light weight distro that supports QEMU. These tests boot
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# that on the machine then run a QEMU guest inside it in KVM mode,
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# that runs the same Alpine distro image.
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# QEMU packages are downloaded and installed on each test. That's not a
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# large download, but it may be more polite to create qcow2 image with
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# QEMU already installed and use that.
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@skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test sometimes gets stuck due to console handling problem')
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@skipUnless(os.getenv('AVOCADO_ALLOW_LARGE_STORAGE'), 'storage limited')
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@skipUnless(os.getenv('SPEED') == 'slow', 'runtime limited')
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@skipIf(missing_deps(), 'dependencies (%s) not installed' % ','.join(deps))
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class HypervisorTest(QemuSystemTest):
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timeout = 1000
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KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 console=hvc0 '
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panic_message = 'Kernel panic - not syncing'
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good_message = 'VFS: Cannot open root device'
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def extract_from_iso(self, iso, path):
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"""
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Extracts a file from an iso file into the test workdir
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:param iso: path to the iso file
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:param path: path within the iso file of the file to be extracted
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:returns: path of the extracted file
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"""
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filename = os.path.basename(path)
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cwd = os.getcwd()
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os.chdir(self.workdir)
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with open(filename, "w") as outfile:
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cmd = "xorriso -osirrox on -indev %s -cpx %s %s" % (iso, path, filename)
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subprocess.run(cmd.split(),
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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os.chdir(cwd)
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# Return complete path to extracted file. Because callers to
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# extract_from_iso() specify 'path' with a leading slash, it is
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# necessary to use os.path.relpath() as otherwise os.path.join()
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# interprets it as an absolute path and drops the self.workdir part.
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return os.path.normpath(os.path.join(self.workdir, filename))
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def setUp(self):
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super().setUp()
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iso_url = ('https://dl-cdn.alpinelinux.org/alpine/v3.18/releases/ppc64le/alpine-standard-3.18.4-ppc64le.iso')
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# Alpine use sha256 so I recalculated this myself
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iso_sha256 = 'c26b8d3e17c2f3f0fed02b4b1296589c2390e6d5548610099af75300edd7b3ff'
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iso_path = self.fetch_asset(iso_url, asset_hash=iso_sha256,
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algorithm = "sha256")
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self.iso_path = iso_path
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self.vmlinuz = self.extract_from_iso(iso_path, '/boot/vmlinuz-lts')
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self.initramfs = self.extract_from_iso(iso_path, '/boot/initramfs-lts')
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def do_start_alpine(self):
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self.vm.set_console()
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kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE
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self.vm.add_args("-kernel", self.vmlinuz)
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self.vm.add_args("-initrd", self.initramfs)
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self.vm.add_args("-smp", "4", "-m", "2g")
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self.vm.add_args("-drive", f"file={self.iso_path},format=raw,if=none,id=drive0")
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self.vm.launch()
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wait_for_console_pattern(self, 'Welcome to Alpine Linux 3.18')
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exec_command(self, 'root')
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wait_for_console_pattern(self, 'localhost login:')
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wait_for_console_pattern(self, 'You may change this message by editing /etc/motd.')
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exec_command(self, 'setup-alpine -qe')
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wait_for_console_pattern(self, 'Updating repository indexes... done.')
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def do_stop_alpine(self):
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exec_command(self, 'poweroff')
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wait_for_console_pattern(self, 'alpine:~#')
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self.vm.wait()
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def do_setup_kvm(self):
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exec_command(self, 'echo http://dl-cdn.alpinelinux.org/alpine/v3.18/main > /etc/apk/repositories')
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wait_for_console_pattern(self, 'alpine:~#')
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exec_command(self, 'echo http://dl-cdn.alpinelinux.org/alpine/v3.18/community >> /etc/apk/repositories')
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wait_for_console_pattern(self, 'alpine:~#')
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exec_command(self, 'apk update')
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wait_for_console_pattern(self, 'alpine:~#')
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exec_command(self, 'apk add qemu-system-ppc64')
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wait_for_console_pattern(self, 'alpine:~#')
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exec_command(self, 'modprobe kvm-hv')
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wait_for_console_pattern(self, 'alpine:~#')
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# This uses the host's block device as the source file for guest block
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# device for install media. This is a bit hacky but allows reuse of the
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# iso without having a passthrough filesystem configured.
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def do_test_kvm(self, hpt=False):
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if hpt:
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append = 'disable_radix'
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else:
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append = ''
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exec_command(self, 'qemu-system-ppc64 -nographic -smp 2 -m 1g '
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'-machine pseries,x-vof=on,accel=kvm '
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'-machine cap-cfpc=broken,cap-sbbc=broken,'
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'cap-ibs=broken,cap-ccf-assist=off '
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'-drive file=/dev/nvme0n1,format=raw,readonly=on '
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'-initrd /media/nvme0n1/boot/initramfs-lts '
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'-kernel /media/nvme0n1/boot/vmlinuz-lts '
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'-append \'usbcore.nousb ' + append + '\'')
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# Alpine 3.18 kernel seems to crash in XHCI USB driver.
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wait_for_console_pattern(self, 'Welcome to Alpine Linux 3.18')
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exec_command(self, 'root')
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wait_for_console_pattern(self, 'localhost login:')
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wait_for_console_pattern(self, 'You may change this message by editing /etc/motd.')
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exec_command(self, 'poweroff >& /dev/null')
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wait_for_console_pattern(self, 'localhost:~#')
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wait_for_console_pattern(self, 'reboot: Power down')
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time.sleep(1)
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exec_command(self, '')
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wait_for_console_pattern(self, 'alpine:~#')
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def test_hv_pseries(self):
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"""
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:avocado: tags=arch:ppc64
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:avocado: tags=machine:pseries
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:avocado: tags=accel:tcg
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"""
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self.require_accelerator("tcg")
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self.vm.add_args("-accel", "tcg,thread=multi")
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self.vm.add_args('-device', 'nvme,serial=1234,drive=drive0')
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self.vm.add_args("-machine", "x-vof=on,cap-nested-hv=on")
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self.do_start_alpine()
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self.do_setup_kvm()
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self.do_test_kvm()
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self.do_stop_alpine()
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def test_hv_pseries_kvm(self):
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"""
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:avocado: tags=arch:ppc64
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:avocado: tags=machine:pseries
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:avocado: tags=accel:kvm
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"""
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self.require_accelerator("kvm")
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self.vm.add_args("-accel", "kvm")
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self.vm.add_args('-device', 'nvme,serial=1234,drive=drive0')
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self.vm.add_args("-machine", "x-vof=on,cap-nested-hv=on,cap-ccf-assist=off")
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self.do_start_alpine()
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self.do_setup_kvm()
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self.do_test_kvm()
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self.do_stop_alpine()
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def test_hv_powernv(self):
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"""
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:avocado: tags=arch:ppc64
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:avocado: tags=machine:powernv
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:avocado: tags=accel:tcg
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"""
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self.require_accelerator("tcg")
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self.vm.add_args("-accel", "tcg,thread=multi")
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self.vm.add_args('-device', 'nvme,bus=pcie.2,addr=0x0,serial=1234,drive=drive0',
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'-device', 'e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=pcie.0,addr=0x0',
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'-netdev', 'user,id=net0,hostfwd=::20022-:22,hostname=alpine')
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self.do_start_alpine()
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self.do_setup_kvm()
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self.do_test_kvm()
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self.do_test_kvm(True)
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self.do_stop_alpine()
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