| #!/usr/bin/env python3 |
| # |
| # INTEL_IOMMU Functional tests |
| # |
| # Copyright (c) 2021 Red Hat, Inc. |
| # |
| # Author: |
| # Eric Auger <eric.auger@redhat.com> |
| # |
| # This work is licensed under the terms of the GNU GPL, version 2 or |
| # later. See the COPYING file in the top-level directory. |
| |
| import hashlib |
| import urllib.request |
| |
| from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern |
| from qemu_test.utils import get_usernet_hostfwd_port |
| |
| |
| class IntelIOMMU(LinuxKernelTest): |
| |
| ASSET_KERNEL = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/vmlinuz'), |
| 'd4738d03dbbe083ca610d0821d0a8f1488bebbdccef54ce33e3adb35fda00129') |
| |
| ASSET_INITRD = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/initrd.img'), |
| '277cd6c7adf77c7e63d73bbb2cded8ef9e2d3a2f100000e92ff1f8396513cd8b') |
| |
| ASSET_DISKIMAGE = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Cloud/x86_64/images/Fedora-Cloud-Base-31-1.9.x86_64.qcow2'), |
| 'e3c1b309d9203604922d6e255c2c5d098a309c2d46215d8fc026954f3c5c27a0') |
| |
| DEFAULT_KERNEL_PARAMS = ('root=/dev/vda1 console=ttyS0 net.ifnames=0 ' |
| 'quiet rd.rescue ') |
| GUEST_PORT = 8080 |
| IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on' |
| kernel_path = None |
| initrd_path = None |
| kernel_params = None |
| |
| def add_common_args(self, path): |
| self.vm.add_args('-drive', f'file={path},if=none,id=drv0,snapshot=on') |
| self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,' + |
| 'drive=drv0,id=virtio-disk0,bootindex=1,' |
| 'werror=stop,rerror=stop' + self.IOMMU_ADDON) |
| self.vm.add_args('-device', 'virtio-gpu-pci' + self.IOMMU_ADDON) |
| |
| self.vm.add_args('-netdev', |
| 'user,id=n1,hostfwd=tcp:127.0.0.1:0-:%d' % |
| self.GUEST_PORT) |
| self.vm.add_args('-device', |
| 'virtio-net-pci,netdev=n1' + self.IOMMU_ADDON) |
| |
| self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0') |
| self.vm.add_args('-object', |
| 'rng-random,id=rng0,filename=/dev/urandom') |
| self.vm.add_args("-m", "1G") |
| self.vm.add_args("-accel", "kvm") |
| |
| def common_vm_setup(self): |
| self.set_machine('q35') |
| self.require_accelerator("kvm") |
| self.require_netdev('user') |
| |
| self.kernel_path = self.ASSET_KERNEL.fetch() |
| self.initrd_path = self.ASSET_INITRD.fetch() |
| image_path = self.ASSET_DISKIMAGE.fetch() |
| self.add_common_args(image_path) |
| self.kernel_params = self.DEFAULT_KERNEL_PARAMS |
| |
| def run_and_check(self): |
| if self.kernel_path: |
| self.vm.add_args('-kernel', self.kernel_path, |
| '-append', self.kernel_params, |
| '-initrd', self.initrd_path) |
| self.vm.set_console() |
| self.vm.launch() |
| self.wait_for_console_pattern('Entering emergency mode.') |
| prompt = '# ' |
| self.wait_for_console_pattern(prompt) |
| |
| # Copy a file (checked later), umount afterwards to drop disk cache: |
| exec_command_and_wait_for_pattern(self, 'mount /dev/vda1 /sysroot', |
| prompt) |
| filename = '/boot/initramfs-5.3.7-301.fc31.x86_64.img' |
| exec_command_and_wait_for_pattern(self, (f'cp /sysroot{filename}' |
| ' /sysroot/root/data'), |
| prompt) |
| exec_command_and_wait_for_pattern(self, 'umount /sysroot', prompt) |
| |
| # Switch from initrd to the cloud image filesystem: |
| exec_command_and_wait_for_pattern(self, 'mount /dev/vda1 /sysroot', |
| prompt) |
| exec_command_and_wait_for_pattern(self, |
| ('for d in dev proc sys run ; do ' |
| 'mount -o bind /$d /sysroot/$d ; done'), prompt) |
| exec_command_and_wait_for_pattern(self, 'chroot /sysroot', prompt) |
| |
| # Checking for IOMMU enablement: |
| self.log.info("Checking whether IOMMU has been enabled...") |
| exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline', |
| 'intel_iommu=on') |
| self.wait_for_console_pattern(prompt) |
| exec_command_and_wait_for_pattern(self, 'dmesg | grep DMAR:', |
| 'IOMMU enabled') |
| self.wait_for_console_pattern(prompt) |
| exec_command_and_wait_for_pattern(self, |
| 'find /sys/kernel/iommu_groups/ -type l', |
| 'devices/0000:00:') |
| self.wait_for_console_pattern(prompt) |
| |
| # Check hard disk device via sha256sum: |
| self.log.info("Checking hard disk...") |
| hashsum = '0dc7472f879be70b2f3daae279e3ae47175ffe249691e7d97f47222b65b8a720' |
| exec_command_and_wait_for_pattern(self, 'sha256sum ' + filename, |
| hashsum) |
| self.wait_for_console_pattern(prompt) |
| exec_command_and_wait_for_pattern(self, 'sha256sum /root/data', |
| hashsum) |
| self.wait_for_console_pattern(prompt) |
| |
| # Check virtio-net via HTTP: |
| exec_command_and_wait_for_pattern(self, 'dhclient eth0', prompt) |
| exec_command_and_wait_for_pattern(self, |
| f'python3 -m http.server {self.GUEST_PORT} & sleep 1', |
| f'Serving HTTP on 0.0.0.0 port {self.GUEST_PORT}') |
| hl = hashlib.sha256() |
| hostport = get_usernet_hostfwd_port(self.vm) |
| url = f'http://localhost:{hostport}{filename}' |
| self.log.info(f'Downloading {url} ...') |
| with urllib.request.urlopen(url) as response: |
| while True: |
| chunk = response.read(1 << 20) |
| if not chunk: |
| break |
| hl.update(chunk) |
| |
| digest = hl.hexdigest() |
| self.log.info(f'sha256sum of download is {digest}.') |
| self.assertEqual(digest, hashsum) |
| |
| def test_intel_iommu(self): |
| self.common_vm_setup() |
| self.vm.add_args('-device', 'intel-iommu,intremap=on') |
| self.vm.add_args('-machine', 'kernel_irqchip=split') |
| self.kernel_params += 'intel_iommu=on' |
| self.run_and_check() |
| |
| def test_intel_iommu_strict(self): |
| self.common_vm_setup() |
| self.vm.add_args('-device', 'intel-iommu,intremap=on') |
| self.vm.add_args('-machine', 'kernel_irqchip=split') |
| self.kernel_params += 'intel_iommu=on,strict' |
| self.run_and_check() |
| |
| def test_intel_iommu_strict_cm(self): |
| self.common_vm_setup() |
| self.vm.add_args('-device', 'intel-iommu,intremap=on,caching-mode=on') |
| self.vm.add_args('-machine', 'kernel_irqchip=split') |
| self.kernel_params += 'intel_iommu=on,strict' |
| self.run_and_check() |
| |
| def test_intel_iommu_pt(self): |
| self.common_vm_setup() |
| self.vm.add_args('-device', 'intel-iommu,intremap=on') |
| self.vm.add_args('-machine', 'kernel_irqchip=split') |
| self.kernel_params += 'intel_iommu=on iommu=pt' |
| self.run_and_check() |
| |
| if __name__ == '__main__': |
| LinuxKernelTest.main() |
