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| From: | Wainer dos Santos Moschetta |
| Subject: | Re: [PATCH v4 2/4] avocado_qemu: Add SMMUv3 tests |
| Date: | Tue, 6 Jul 2021 11:26:49 -0300 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 |
On 7/5/21 5:00 AM, Eric Auger wrote:
Hi Wainer, On 7/1/21 8:13 PM, Wainer dos Santos Moschetta wrote:Hi, On 6/29/21 11:36 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> --- v3 -> v4: - add tags for machine, distro in the class - removed smp and memory overrides - set default param value of common_vm_setup to False 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 | 132 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 tests/acceptance/smmu.pyReviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com> I tested it in a Fedora 32 aarch64 host. The execution output: # ./tests/venv/bin/avocado run tests/acceptance/smmu.py JOB ID : 1625038f5a2ae17c8ba6c503d3df8661ff528942 JOB LOG : /root/avocado/job-results/job-2021-07-01T13.38-1625038/job.log (1/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril: PASS (175.54 s) (2/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril_passthrough: WARN: Test passed but there were warnings during execution. Check the log for details. (168.39 s) (3/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril_nostrict: WARN: Test passed but there were warnings during execution. Check the log for details. (161.58 s) (4/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril: PASS (150.85 s) (5/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril_passthrough: WARN: Test passed but there were warnings during execution. Check the log for details. (177.56 s) (6/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril_nostrict: WARN: Test passed but there were warnings during execution. Check the log for details. (190.86 s) RESULTS : PASS 2 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 4 | INTERRUPT 0 | CANCEL 0 JOB TIME : 1026.50 s One thing that caught my attention was the amount of time spent on each test. It spend more than 2 minutes on the package installation (`self.ssh_command('dnf -y install numactl-devel')`) in the guest. Without that operation, it runs way faster: # ./tests/venv/bin/avocado run tests/acceptance/smmu.py JOB ID : 24f22f99169ece37df64d72d2eb373921f378aac JOB LOG : /root/avocado/job-results/job-2021-07-01T13.28-24f22f9/job.log (1/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril: PASS (39.61 s) (2/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril_passthrough: WARN: Test passed but there were warnings during execution. Check the log for details. (48.32 s) (3/6) tests/acceptance/smmu.py:SMMU.test_smmu_noril_nostrict: WARN: Test passed but there were warnings during execution. Check the log for details. (48.10 s) (4/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril: PASS (39.22 s) (5/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril_passthrough: WARN: Test passed but there were warnings during execution. Check the log for details. (52.92 s) (6/6) tests/acceptance/smmu.py:SMMU.test_smmu_ril_nostrict: WARN: Test passed but there were warnings during execution. Check the log for details. (50.96 s) RESULTS : PASS 2 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 4 | INTERRUPT 0 | CANCEL 0 JOB TIME : 280.62 s Install a package seems a good exerciser for disk I/O and networking, but maybe you can use another method for the sake of speed up the tests?As discussed earlier with Cleber, I am aware the test duration is long but it was useful finding bugs for SMMU with range invalidation. such a bug could not be hit with a single boot + ping for instance. Maybe we should have a mechanism that allows to put some tests out of the automatic CI?
Sorry Eric, I missed that discussion. I will review your v5 series very soon.
Thanks! - Wainer
Thanks Eric- Wainerdiff --git a/tests/acceptance/smmu.py b/tests/acceptance/smmu.py new file mode 100644 index 0000000000..c1d4b88e5f --- /dev/null +++ b/tests/acceptance/smmu.py @@ -0,0 +1,132 @@ +# 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=machine:virt + :avocado: tags=distro:fedora + :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=False): + self.require_accelerator("kvm") + self.vm.add_args("-accel", "kvm") + self.vm.add_args("-cpu", "host") + 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 False: + 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 + """ + 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()
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