#!/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") 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()