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# INTEL_IOMMU 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 import skipUnless
from avocado_qemu import LinuxTest
@skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
class IntelIOMMU(LinuxTest):
"""
:avocado: tags=arch:x86_64
:avocado: tags=distro:fedora
:avocado: tags=distro_version:31
:avocado: tags=machine:q35
:avocado: tags=accel:kvm
:avocado: tags=intel_iommu
:avocado: tags=flaky
"""
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,' +
'drive=drv0,id=virtio-disk0,bootindex=1,'
'werror=stop,rerror=stop' + self.IOMMU_ADDON)
self.vm.add_args('-device', 'virtio-gpu-pci' + self.IOMMU_ADDON)
self.vm.add_args('-drive',
'file=%s,if=none,cache=writethrough,id=drv0' % path)
def setUp(self):
super(IntelIOMMU, self).setUp(None, 'virtio-net-pci' + self.IOMMU_ADDON)
def add_common_args(self):
self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
self.vm.add_args('-object',
'rng-random,id=rng0,filename=/dev/urandom')
def common_vm_setup(self, custom_kernel=None):
self.require_accelerator("kvm")
self.add_common_args()
self.vm.add_args("-accel", "kvm")
if custom_kernel is None:
return
kernel_url = self.distro.pxeboot_url + 'vmlinuz'
kernel_hash = '5b6f6876e1b5bda314f93893271da0d5777b1f3c'
initrd_url = self.distro.pxeboot_url + 'initrd.img'
initrd_hash = 'dd0340a1b39bd28f88532babd4581c67649ec5b1'
self.kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
self.initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
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('dmesg | grep -e DMAR -e IOMMU')
self.ssh_command('find /sys/kernel/iommu_groups/ -type l')
self.ssh_command('dnf -y install numactl-devel')
def test_intel_iommu(self):
"""
:avocado: tags=intel_iommu_intremap
"""
self.common_vm_setup(True)
self.vm.add_args('-device', 'intel-iommu,intremap=on')
self.vm.add_args('-machine', 'kernel_irqchip=split')
self.kernel_params = (self.distro.default_kernel_params +
' quiet intel_iommu=on')
self.run_and_check()
def test_intel_iommu_strict(self):
"""
:avocado: tags=intel_iommu_strict
"""
self.common_vm_setup(True)
self.vm.add_args('-device', 'intel-iommu,intremap=on')
self.vm.add_args('-machine', 'kernel_irqchip=split')
self.kernel_params = (self.distro.default_kernel_params +
' quiet intel_iommu=on,strict')
self.run_and_check()
def test_intel_iommu_strict_cm(self):
"""
:avocado: tags=intel_iommu_strict_cm
"""
self.common_vm_setup(True)
self.vm.add_args('-device', 'intel-iommu,intremap=on,caching-mode=on')
self.vm.add_args('-machine', 'kernel_irqchip=split')
self.kernel_params = (self.distro.default_kernel_params +
' quiet intel_iommu=on,strict')
self.run_and_check()
def test_intel_iommu_pt(self):
"""
:avocado: tags=intel_iommu_pt
"""
self.common_vm_setup(True)
self.vm.add_args('-device', 'intel-iommu,intremap=on')
self.vm.add_args('-machine', 'kernel_irqchip=split')
self.kernel_params = (self.distro.default_kernel_params +
' quiet intel_iommu=on iommu=pt')
self.run_and_check()
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