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>
---
MAINTAINERS | 1 +
tests/avocado/ppc_hv_tests.py | 202 ++++++++++++++++++++++++++++++++++
2 files changed, 203 insertions(+)
create mode 100644 tests/avocado/ppc_hv_tests.py
diff --git a/MAINTAINERS b/MAINTAINERS
index 9dd98a923f..3b409b42a5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1526,6 +1526,7 @@ F: tests/qtest/libqos/*spapr*
F: tests/qtest/rtas*
F: tests/qtest/libqos/rtas*
F: tests/avocado/ppc_pseries.py
+F: tests/avocado/ppc_hv_tests.py
PowerNV (Non-Virtualized)
M: Cédric Le Goater <clg@kaod.org>
diff --git a/tests/avocado/ppc_hv_tests.py b/tests/avocado/ppc_hv_tests.py
new file mode 100644
index 0000000000..5080358e25
--- /dev/null
+++ b/tests/avocado/ppc_hv_tests.py
@@ -0,0 +1,202 @@
+# 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
+
+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.
+@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')
+@skipIf(missing_deps(), 'dependencies (%s) not installed' % ','.join(deps))
+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.')
+ 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()
--
2.42.0