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https://github.com/Motorhead1991/qemu.git
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270d4a5164
Convert the intel_iommu test to the new functional framework. This test needs some changes since we neither support the old 'LinuxTest' class in the functional framework yet, nor a way to use SSH for running commands in the guest. So we now directly download a Fedora kernel and initrd and set up the serial console for executing the commands and for looking for the results. Instead of configuring the cloud image via cloud-init, we now simply mount the file system manually from an initrd rescue shell. While the old test was exercising the network with a "dnf install" command (which is not the best option for the CI since this depends on third party servers), the new code is now setting up a little HTTP server in the guest and transfers a file from the guest to the host instead. The test should now run much faster and more reliable (since we don't depend on the third party servers for "dnf install" anymore), so we can also drop the @skipUnless decorator now. Message-ID: <20241217121550.141072-3-thuth@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
175 lines
7.3 KiB
Python
Executable file
175 lines
7.3 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# INTEL_IOMMU Functional tests
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#
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# Copyright (c) 2021 Red Hat, Inc.
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#
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# Author:
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# Eric Auger <eric.auger@redhat.com>
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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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import hashlib
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import urllib.request
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from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
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from qemu_test.utils import get_usernet_hostfwd_port
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class IntelIOMMU(LinuxKernelTest):
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ASSET_KERNEL = Asset(
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('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases'
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'/31/Server/x86_64/os/images/pxeboot/vmlinuz'),
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'd4738d03dbbe083ca610d0821d0a8f1488bebbdccef54ce33e3adb35fda00129')
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ASSET_INITRD = Asset(
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('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases'
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'/31/Server/x86_64/os/images/pxeboot/initrd.img'),
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'277cd6c7adf77c7e63d73bbb2cded8ef9e2d3a2f100000e92ff1f8396513cd8b')
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ASSET_DISKIMAGE = Asset(
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('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases'
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'/31/Cloud/x86_64/images/Fedora-Cloud-Base-31-1.9.x86_64.qcow2'),
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'e3c1b309d9203604922d6e255c2c5d098a309c2d46215d8fc026954f3c5c27a0')
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DEFAULT_KERNEL_PARAMS = ('root=/dev/vda1 console=ttyS0 net.ifnames=0 '
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'quiet rd.rescue ')
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GUEST_PORT = 8080
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IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on'
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kernel_path = None
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initrd_path = None
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kernel_params = None
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def add_common_args(self, path):
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self.vm.add_args('-drive', f'file={path},if=none,id=drv0,snapshot=on')
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self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,' +
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'drive=drv0,id=virtio-disk0,bootindex=1,'
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'werror=stop,rerror=stop' + self.IOMMU_ADDON)
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self.vm.add_args('-device', 'virtio-gpu-pci' + self.IOMMU_ADDON)
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self.vm.add_args('-netdev',
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'user,id=n1,hostfwd=tcp:127.0.0.1:0-:%d' %
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self.GUEST_PORT)
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self.vm.add_args('-device',
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'virtio-net-pci,netdev=n1' + self.IOMMU_ADDON)
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self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
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self.vm.add_args('-object',
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'rng-random,id=rng0,filename=/dev/urandom')
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self.vm.add_args("-m", "1G")
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self.vm.add_args("-accel", "kvm")
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def common_vm_setup(self):
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self.set_machine('q35')
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self.require_accelerator("kvm")
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self.require_netdev('user')
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self.kernel_path = self.ASSET_KERNEL.fetch()
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self.initrd_path = self.ASSET_INITRD.fetch()
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image_path = self.ASSET_DISKIMAGE.fetch()
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self.add_common_args(image_path)
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self.kernel_params = self.DEFAULT_KERNEL_PARAMS
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def run_and_check(self):
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if self.kernel_path:
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self.vm.add_args('-kernel', self.kernel_path,
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'-append', self.kernel_params,
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'-initrd', self.initrd_path)
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self.vm.set_console()
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self.vm.launch()
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self.wait_for_console_pattern('Entering emergency mode.')
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prompt = '# '
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self.wait_for_console_pattern(prompt)
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# Copy a file (checked later), umount afterwards to drop disk cache:
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exec_command_and_wait_for_pattern(self, 'mount /dev/vda1 /sysroot',
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prompt)
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filename = '/boot/initramfs-5.3.7-301.fc31.x86_64.img'
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exec_command_and_wait_for_pattern(self, (f'cp /sysroot{filename}'
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' /sysroot/root/data'),
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prompt)
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exec_command_and_wait_for_pattern(self, 'umount /sysroot', prompt)
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# Switch from initrd to the cloud image filesystem:
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exec_command_and_wait_for_pattern(self, 'mount /dev/vda1 /sysroot',
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prompt)
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exec_command_and_wait_for_pattern(self,
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('for d in dev proc sys run ; do '
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'mount -o bind /$d /sysroot/$d ; done'), prompt)
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exec_command_and_wait_for_pattern(self, 'chroot /sysroot', prompt)
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# Checking for IOMMU enablement:
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self.log.info("Checking whether IOMMU has been enabled...")
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exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline',
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'intel_iommu=on')
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self.wait_for_console_pattern(prompt)
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exec_command_and_wait_for_pattern(self, 'dmesg | grep DMAR:',
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'IOMMU enabled')
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self.wait_for_console_pattern(prompt)
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exec_command_and_wait_for_pattern(self,
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'find /sys/kernel/iommu_groups/ -type l',
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'devices/0000:00:')
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self.wait_for_console_pattern(prompt)
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# Check hard disk device via sha256sum:
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self.log.info("Checking hard disk...")
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hashsum = '0dc7472f879be70b2f3daae279e3ae47175ffe249691e7d97f47222b65b8a720'
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exec_command_and_wait_for_pattern(self, 'sha256sum ' + filename,
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hashsum)
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self.wait_for_console_pattern(prompt)
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exec_command_and_wait_for_pattern(self, 'sha256sum /root/data',
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hashsum)
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self.wait_for_console_pattern(prompt)
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# Check virtio-net via HTTP:
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exec_command_and_wait_for_pattern(self, 'dhclient eth0', prompt)
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exec_command_and_wait_for_pattern(self,
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f'python3 -m http.server {self.GUEST_PORT} & sleep 1',
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f'Serving HTTP on 0.0.0.0 port {self.GUEST_PORT}')
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hl = hashlib.sha256()
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hostport = get_usernet_hostfwd_port(self.vm)
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url = f'http://localhost:{hostport}{filename}'
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self.log.info(f'Downloading {url} ...')
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with urllib.request.urlopen(url) as response:
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while True:
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chunk = response.read(1 << 20)
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if not chunk:
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break
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hl.update(chunk)
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digest = hl.hexdigest()
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self.log.info(f'sha256sum of download is {digest}.')
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self.assertEqual(digest, hashsum)
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def test_intel_iommu(self):
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self.common_vm_setup()
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self.vm.add_args('-device', 'intel-iommu,intremap=on')
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self.vm.add_args('-machine', 'kernel_irqchip=split')
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self.kernel_params += 'intel_iommu=on'
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self.run_and_check()
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def test_intel_iommu_strict(self):
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self.common_vm_setup()
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self.vm.add_args('-device', 'intel-iommu,intremap=on')
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self.vm.add_args('-machine', 'kernel_irqchip=split')
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self.kernel_params += 'intel_iommu=on,strict'
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self.run_and_check()
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def test_intel_iommu_strict_cm(self):
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self.common_vm_setup()
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self.vm.add_args('-device', 'intel-iommu,intremap=on,caching-mode=on')
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self.vm.add_args('-machine', 'kernel_irqchip=split')
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self.kernel_params += 'intel_iommu=on,strict'
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self.run_and_check()
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def test_intel_iommu_pt(self):
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self.common_vm_setup()
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self.vm.add_args('-device', 'intel-iommu,intremap=on')
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self.vm.add_args('-machine', 'kernel_irqchip=split')
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self.kernel_params += 'intel_iommu=on iommu=pt'
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self.run_and_check()
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if __name__ == '__main__':
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LinuxKernelTest.main()
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