tests/avocado/intel_iommu.py

   1 # INTEL_IOMMU Functional tests
   2 #
   3 # Copyright (c) 2021 Red Hat, Inc.
   4 #
   5 # Author:
   6 #  Eric Auger <eric.auger@redhat.com>
   7 #
   8 # This work is licensed under the terms of the GNU GPL, version 2 or
   9 # later.  See the COPYING file in the top-level directory.
  10 import os
  11
  12 from avocado import skipUnless
  13 from avocado_qemu import LinuxTest
  14
  15 @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
  16
  17 class IntelIOMMU(LinuxTest):
  18     """
  19     :avocado: tags=arch:x86_64
  20     :avocado: tags=distro:fedora
  21     :avocado: tags=distro_version:31
  22     :avocado: tags=machine:q35
  23     :avocado: tags=accel:kvm
  24     :avocado: tags=intel_iommu
  25     :avocado: tags=flaky
  26     """
  27
  28     IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on'
  29     kernel_path = None
  30     initrd_path = None
  31     kernel_params = None
  32
  33     def set_up_boot(self):
  34         path = self.download_boot()
  35         self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,scsi=off,' +
  36                          'drive=drv0,id=virtio-disk0,bootindex=1,'
  37                          'werror=stop,rerror=stop' + self.IOMMU_ADDON)
  38         self.vm.add_args('-device', 'virtio-gpu-pci' + self.IOMMU_ADDON)
  39         self.vm.add_args('-drive',
  40                          'file=%s,if=none,cache=writethrough,id=drv0' % path)
  41
  42     def setUp(self):
  43         super(IntelIOMMU, self).setUp(None, 'virtio-net-pci' + self.IOMMU_ADDON)
  44
  45     def add_common_args(self):
  46         self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
  47         self.vm.add_args('-object',
  48                          'rng-random,id=rng0,filename=/dev/urandom')
  49
  50     def common_vm_setup(self, custom_kernel=None):
  51         self.require_accelerator("kvm")
  52         self.add_common_args()
  53         self.vm.add_args("-accel", "kvm")
  54
  55         if custom_kernel is None:
  56             return
  57
  58         kernel_url = self.distro.pxeboot_url + 'vmlinuz'
  59         kernel_hash = '5b6f6876e1b5bda314f93893271da0d5777b1f3c'
  60         initrd_url = self.distro.pxeboot_url + 'initrd.img'
  61         initrd_hash = 'dd0340a1b39bd28f88532babd4581c67649ec5b1'
  62         self.kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  63         self.initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
  64
  65     def run_and_check(self):
  66         if self.kernel_path:
  67             self.vm.add_args('-kernel', self.kernel_path,
  68                              '-append', self.kernel_params,
  69                              '-initrd', self.initrd_path)
  70         self.launch_and_wait()
  71         self.ssh_command('cat /proc/cmdline')
  72         self.ssh_command('dmesg | grep -e DMAR -e IOMMU')
  73         self.ssh_command('find /sys/kernel/iommu_groups/ -type l')
  74         self.ssh_command('dnf -y install numactl-devel')
  75
  76     def test_intel_iommu(self):
  77         """
  78         :avocado: tags=intel_iommu_intremap
  79         """
  80
  81         self.common_vm_setup(True)
  82         self.vm.add_args('-device', 'intel-iommu,intremap=on')
  83         self.vm.add_args('-machine', 'kernel_irqchip=split')
  84
  85         self.kernel_params = (self.distro.default_kernel_params +
  86                               ' quiet intel_iommu=on')
  87         self.run_and_check()
  88
  89     def test_intel_iommu_strict(self):
  90         """
  91         :avocado: tags=intel_iommu_strict
  92         """
  93
  94         self.common_vm_setup(True)
  95         self.vm.add_args('-device', 'intel-iommu,intremap=on')
  96         self.vm.add_args('-machine', 'kernel_irqchip=split')
  97         self.kernel_params = (self.distro.default_kernel_params +
  98                               ' quiet intel_iommu=on,strict')
  99         self.run_and_check()
 100
 101     def test_intel_iommu_strict_cm(self):
 102         """
 103         :avocado: tags=intel_iommu_strict_cm
 104         """
 105
 106         self.common_vm_setup(True)
 107         self.vm.add_args('-device', 'intel-iommu,intremap=on,caching-mode=on')
 108         self.vm.add_args('-machine', 'kernel_irqchip=split')
 109         self.kernel_params = (self.distro.default_kernel_params +
 110                               ' quiet intel_iommu=on,strict')
 111         self.run_and_check()
 112
 113     def test_intel_iommu_pt(self):
 114         """
 115         :avocado: tags=intel_iommu_pt
 116         """
 117
 118         self.common_vm_setup(True)
 119         self.vm.add_args('-device', 'intel-iommu,intremap=on')
 120         self.vm.add_args('-machine', 'kernel_irqchip=split')
 121         self.kernel_params = (self.distro.default_kernel_params +
 122                               ' quiet intel_iommu=on iommu=pt')
 123         self.run_and_check()