VFIO Passthrough for Arch

.nvidia-xinitrc

# for use with https://github.com/Witko/nvidia-xrun

if [ $# -gt 0 ]; then
    $*
else
    # On Antergos this forces an X0rg version of GNOME
    export GDK_BACKEND=x11
    gnome-session
fi

fstab

# /etc/fstab
hugetlbfs /hugepages hugetlbfs mode=1770,gid=78 0 0

grub

# /etc/default/grub
# grub-mkconfig /boot/grub/grub.cfg
GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on"
GRUB_CMDLINE_LINUX_DEFAULT="hugepagesz=1GB default_hugepagesz=1G transparent_hugepage=never"

mkinitcpio.conf

# /etc/mkinitcpio.conf
# "sudo mkinitcpio -p linux" to rebuild initramfs
MODULES="vfio vfio_iommu_type1 vfio_pci vfio_virqfd i915 nouveau"

utilities.sh

#!/bin/bash

gfxstatus() {
	echo -n "Card:"
        lspci -nnk -d 10de:13c0
	echo -n "Audio:"
	lspci -nnk -d 10de:0fbb
}

# Force remove the GPU from the system and rescan the PCI bus.
# This basically performs a hardware reset.
vfio_gpu_redetect() {
   echo -n "Removing the GPU... "
    echo 1 | sudo tee /sys/bus/pci/devices/0000:01:00.0/remove

    echo -n "Removing HDMI Audio... "
    echo 1 | sudo tee /sys/bus/pci/devices/0000:01:00.1/remove

    echo -n "Rescanning PCI devices... "
    echo 1 | sudo tee /sys/bus/pci/rescan
}

# Bind both GPU devices to the vfio-pci driver.
vfio_gpu_bind_vfio() {
	sudo modprobe vfio-pci
	echo "0000:01:00.0" | sudo tee /sys/bus/pci/drivers/vfio-pci/bind
	echo "0000:01:00.1" | sudo tee /sys/bus/pci/drivers/vfio-pci/bind
}

vfio.conf

# /etc/modprobe.d/vfio.conf
options vfio-pci ids=10de:13c0,10de:0fbb disable_vga=1
softdep nouveau pre: vfio-pci

win10.xml

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>win10</name>
  <uuid>4cf5f94f-ef0f-45ee-bd77-4bf70748ab24</uuid>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://microsoft.com/win/10"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit='KiB'>25600000</memory>
  <currentMemory unit='KiB'>25600000</currentMemory>
  <vcpu placement='static'>6</vcpu>
  <iothreads>1</iothreads>
  <iothreadids>
    <iothread id='1'/>
  </iothreadids>
  <cputune>
    <vcpupin vcpu='0' cpuset='1'/>
    <vcpupin vcpu='1' cpuset='2'/>
    <vcpupin vcpu='2' cpuset='3'/>
    <vcpupin vcpu='3' cpuset='5'/>
    <vcpupin vcpu='4' cpuset='6'/>
    <vcpupin vcpu='5' cpuset='7'/>
    <emulatorpin cpuset='0,4'/>
    <iothreadpin iothread='1' cpuset='0,4'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-i440fx-4.0'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/ovmf/x64/OVMF_CODE.fd</loader>
    <nvram>/var/lib/libvirt/qemu/nvram/win10_VARS.fd</nvram>
    <bootmenu enable='yes'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      <vendor_id state='on' value='ButteryButt'/>
    </hyperv>
    <kvm>
      <hidden state='on'/>
    </kvm>
    <vmport state='off'/>
  </features>
  <cpu mode='host-passthrough' check='none'>
    <topology sockets='1' cores='3' threads='2'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/home/daniel/Windows10/win10.raw'/>
      <target dev='sda' bus='scsi'/>
      <boot order='1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source dev='/dev/disk/by-id/<redacted>'/>
      <target dev='sdd' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='0' unit='3'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source dev='/dev/disk/by-id/<redacted>'/>
      <target dev='sde' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='0' unit='4'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/home/daniel/Windows10/Win10_1809Oct_English_x64.iso'/>
      <target dev='sdb' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/home/daniel/Windows10/virtio-win-0.1.164.iso'/>
      <target dev='sdc' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='2'/>
    </disk>
    <controller type='usb' index='0' model='qemu-xhci' ports='15'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='scsi' index='0' model='virtio-scsi'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:dc:b3:36'/>
      <source network='default'/>
      <model type='e1000e'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <input type='mouse' bus='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/>
    </input>
    <input type='keyboard' bus='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <sound model='ich9'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </sound>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </hostdev>
    <redirdev bus='usb' type='spicevmc'>
      <address type='usb' bus='0' port='2'/>
    </redirdev>
    <redirdev bus='usb' type='spicevmc'>
      <address type='usb' bus='0' port='3'/>
    </redirdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </memballoon>
  </devices>
  <qemu:commandline>
    <qemu:arg value='-object'/>
    <qemu:arg value='input-linux,id=mouse1,evdev=/dev/input/by-id/usb-Logitech_USB_Receiver-event-mouse'/>
    <qemu:arg value='-object'/>
    <qemu:arg value='input-linux,id=kbd1,evdev=/dev/input/by-id/usb-HID_Keyboard_HID_Keyboard-event-kbd,grab_all=on,repeat=on'/>
    <qemu:env name='QEMU_AUDIO_DRV' value='pa'/>
    <qemu:env name='QEMU_PA_SERVER' value='/run/user/1000/pulse/native'/>
  </qemu:commandline>
</domain>