• Set up IOMMU
  • Enable IOMMU
  • Verify IOMMU is enabled successfully
• Set up VM
  • Installation
  • Starting services
  • Start default network
  • Setup Guest OS
    • Launch virt-manager, and start creating guest. On final step, check Customize before install.
    • > In the Overview section, set Chipset to Q35 and firmware to UEFI.
    • > In the CPUs section, change CPU model to host-passthrough. You need to type it manually.
    • According to Arch Wiki, this makes sure that the CPU is detected properly. Without it, some applications may complain about your CPU being of an unknown model.
    • Now, you can Begin Installation.

Set up IOMMU

Enable IOMMU

Load /etc/default/grub and append intel_iommu=on or amd_iommu=on to GRUB_CMDLINE_LINUX_DEFAULT. Also, iommu=pt.
Update grub configuration.

  grub-mkconfig -o /boot/grub/grub.cfg

Verify IOMMU is enabled successfully

You should see IOMMU enabled in output.

  dmesg | grep -i -e DMAR -e IOMMU | grep enabled

Set up VM

Installation

Install the required packages.

  sudo pacman -S qemu libvirt edk2-ovmf virt-manager dnsmasq ebtables iptables

Starting services

Enable and start libvirt service

  sudo systemctl enable libvirtd
  sudo systemctl start libvirtd

Start default network

This may not be needed. If default network isn't started by default for you, start the network manually.

  sudo virsh net-start default
  sudo virsh net-autostart default

Setup Guest OS

Launch virt-manager, and start creating guest. On final step, check Customize before install.

> In the Overview section, set Chipset to Q35 and firmware to UEFI.

> In the CPUs section, change CPU model to host-passthrough. You need to type it manually.

According to Arch Wiki, this makes sure that the CPU is detected properly. Without it, some applications may complain about your CPU being of an unknown model.

Now, you can Begin Installation.