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. 10import os 11 12from avocado import skipUnless 13from avocado_qemu import LinuxTest 14 15@skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab') 16 17class 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,' + 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() 124