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Re: [PATCH v3 2/3] avocado_qemu: Add SMMUv3 tests
From: |
Eric Auger |
Subject: |
Re: [PATCH v3 2/3] avocado_qemu: Add SMMUv3 tests |
Date: |
Tue, 29 Jun 2021 16:08:51 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 |
On 6/28/21 8:27 PM, Wainer dos Santos Moschetta wrote:
> Hi,
>
> On 6/21/21 5:08 AM, Eric Auger wrote:
>> Add new tests checking the good behavior of the SMMUv3 protecting
>> 2 virtio pci devices (block and net). We check the guest boots and
>> we are able to install a package. Different guest configs are tested:
>> standard, passthrough an strict=0. This is tested with both fedora 31
>> and
>> 33. The former uses a 5.3 kernel without range invalidation whereas the
>> latter uses a 5.8 kernel that features range invalidation.
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>>
>> ---
>>
>> v1 -> v2:
>> - removed ssh import
>> - combined add_command_args() and common_vm_setup()
>> - moved tags in class' docstring and added tags=arch:aarch64
>> - use self.get_default_kernel_params()
>> - added RIL tests with fed33 + introduce new tags
>> ---
>> tests/acceptance/smmu.py | 133 +++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 133 insertions(+)
>> create mode 100644 tests/acceptance/smmu.py
>>
>> diff --git a/tests/acceptance/smmu.py b/tests/acceptance/smmu.py
>> new file mode 100644
>> index 0000000000..bcb5416a56
>> --- /dev/null
>> +++ b/tests/acceptance/smmu.py
>> @@ -0,0 +1,133 @@
>> +# SMMUv3 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 os
>> +
>> +from avocado_qemu import LinuxTest, BUILD_DIR
>> +
>> +class SMMU(LinuxTest):
>> + """
>> + :avocado: tags=accel:kvm
>> + :avocado: tags=cpu:host
>> + :avocado: tags=arch:aarch64
>> + :avocado: tags=smmu
>> + """
>> +
>> + IOMMU_ADDON =
>> ',iommu_platform=on,disable-modern=off,disable-legacy=on'
>> + kernel_path = None
>> + initrd_path = None
>> + kernel_params = None
>> +
>> + def set_up_boot(self):
>> + path = self.download_boot()
>> + self.vm.add_args('-device',
>> 'virtio-blk-pci,bus=pcie.0,scsi=off,' +
>> + 'drive=drv0,id=virtio-disk0,bootindex=1,'
>> + 'werror=stop,rerror=stop' + self.IOMMU_ADDON)
>> + self.vm.add_args('-drive',
>> +
>> 'file=%s,if=none,cache=writethrough,id=drv0' % path)
>> +
>> + def setUp(self):
>> + super(SMMU, self).setUp(None, 'virtio-net-pci' +
>> self.IOMMU_ADDON)
>> +
>> + def common_vm_setup(self, custom_kernel=None):
> As some tests call `self.common_vm_setup(True)`, I think
> `custom_kernel` should be `True|False`.
OK changed to False
>> + self.require_accelerator("kvm")
>> + self.vm.add_args("-machine", "virt")
> FYI, if you have the "machine" tag (e.g. "tags=machine:virt") to your
> tests then avocado_qemu will set "-machine" automatically to any
> created VM.
OK
>> + self.vm.add_args("-accel", "kvm")
>> + self.vm.add_args("-cpu", "host")
>> + self.vm.add_args("-smp", "8")
>> + self.vm.add_args("-m", "4096")
>
> The `avocado_qemu.LinuxTest` provides default values for smp and
> memory which cannot be properly overwritten. The resulting command
> line will have -smp and -m twice.
>
> I created an issue to track that improvement:
> https://gitlab.com/qemu-project/qemu/-/issues/453
OK removed those params and rely on defaults
>
>> + self.vm.add_args("-machine", "iommu=smmuv3")
>> + self.vm.add_args("-d", "guest_errors")
>> + self.vm.add_args('-bios', os.path.join(BUILD_DIR, 'pc-bios',
>> + 'edk2-aarch64-code.fd'))
>> + self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
>> + self.vm.add_args('-object',
>> + 'rng-random,id=rng0,filename=/dev/urandom')
>> +
>> + if custom_kernel is None:
>> + return
>> +
>> + kernel_url = self.get_pxeboot_url() + 'vmlinuz'
>> + initrd_url = self.get_pxeboot_url() + 'initrd.img'
>> + self.kernel_path = self.fetch_asset(kernel_url)
>> + self.initrd_path = self.fetch_asset(initrd_url)
>> +
>> + 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.launch_and_wait()
>> + self.ssh_command('cat /proc/cmdline')
>> + self.ssh_command('dnf -y install numactl-devel')
>> +
>> +
>> + # 5.3 kernel without RIL #
>> +
>> + def test_smmu_noril(self):
>> + """
>> + :avocado: tags=smmu_noril
>> + :avocado: tags=smmu_noril_tests
>> + :avocado: tags=distro_version:31
>> + """
>> + self.common_vm_setup()
>> + self.run_and_check()
>> +
>> + def test_smmu_noril_passthrough(self):
>> + """
>> + :avocado: tags=smmu_noril_passthrough
>> + :avocado: tags=smmu_noril_tests
>> + :avocado: tags=distro_version:31
>
> Maybe you should "distro" tag the tests (or better, tag the class), so
> that a readers of this don't need to browse the `LinuxTest` class
> looking for the distro to be used (although it may be clear to some,
> based on the distro_version)...
done
>
> Thanks for contributing those tests!
you're welcome
Thanks
Eric
>
> - Wainer
>
>> + """
>> + self.common_vm_setup(True)
>> + self.kernel_params = self.get_default_kernel_params() + '
>> iommu.passthrough=on'
>> + self.run_and_check()
>> +
>> + def test_smmu_noril_nostrict(self):
>> + """
>> + :avocado: tags=smmu_noril_nostrict
>> + :avocado: tags=smmu_noril_tests
>> + :avocado: tags=distro_version:31
>> + """
>> + self.common_vm_setup(True)
>> + self.kernel_params = self.get_default_kernel_params() + '
>> iommu.strict=0'
>> + self.run_and_check()
>> +
>> + # 5.8 kernel featuring range invalidation
>> + # >= v5.7 kernel
>> +
>> + def test_smmu_ril(self):
>> + """
>> + :avocado: tags=smmu_ril
>> + :avocado: tags=smmu_ril_tests
>> + :avocado: tags=distro_version:33
>> + """
>> + self.common_vm_setup()
>> + self.run_and_check()
>> +
>> + def test_smmu_ril_passthrough(self):
>> + """
>> + :avocado: tags=smmu_ril_passthrough
>> + :avocado: tags=smmu_ril_tests
>> + :avocado: tags=distro_version:33
>> + """
>> + self.common_vm_setup(True)
>> + self.kernel_params = self.get_default_kernel_params() + '
>> iommu.passthrough=on'
>> + self.run_and_check()
>> +
>> + def test_smmu_ril_nostrict(self):
>> + """
>> + :avocado: tags=smmu_ril_nostrict
>> + :avocado: tags=smmu_ril_tests
>> + :avocado: tags=distro_version:33
>> + """
>> + self.common_vm_setup(True)
>> + self.kernel_params = self.get_default_kernel_params() + '
>> iommu.strict=0'
>> + self.run_and_check()
>