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