| #!/usr/bin/env python3 |
| # |
| # 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 unittest import skipIf, skipUnless |
| from qemu_test import QemuSystemTest, Asset |
| from qemu_test 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_ALLOW_LARGE_STORAGE'), 'storage 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' |
| |
| ASSET_ISO = Asset( |
| ('https://dl-cdn.alpinelinux.org/alpine/v3.18/' |
| 'releases/ppc64le/alpine-standard-3.18.4-ppc64le.iso'), |
| 'c26b8d3e17c2f3f0fed02b4b1296589c2390e6d5548610099af75300edd7b3ff') |
| |
| 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.chmod(filename, 0o600) |
| 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() |
| |
| self.iso_path = self.ASSET_ISO.fetch() |
| self.vmlinuz = self.extract_from_iso(self.iso_path, '/boot/vmlinuz-lts') |
| self.initramfs = self.extract_from_iso(self.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,read-only=true") |
| |
| 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): |
| self.require_accelerator("tcg") |
| self.set_machine('pseries') |
| 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): |
| self.require_accelerator("kvm") |
| self.set_machine('pseries') |
| 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): |
| self.require_accelerator("tcg") |
| self.set_machine('powernv') |
| 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() |
| |
| if __name__ == '__main__': |
| QemuSystemTest.main() |
