155 lines
6.5 KiB
Python
Executable file
155 lines
6.5 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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from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
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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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self.check_http_download(filename, hashsum, self.GUEST_PORT)
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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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