anchor.diff:  .. Update the following: `cpu: Haswell,hidden=1`
   .. Add the following:
   ... Audio passthrough: `args: -device AC97,addr=0x18`
  -... GPU for passthrough: `hostpci0: 28:00,pcie=1,x-vga=on`
  +`args: -device intel-hda,id=sound5,addr=0x18 -device hda-micro,id=sound5-codec0,bus=sound5.0,cad=0 -device hda-duplex,id=sound5-codec1,bus=sound5.0,cad=1`
  +... GPU for passthrough: `hostpci0: 28:00.0;28:00.1,pcie=1`
   ... Emulation for PCI-E passthrough: `machine: q35`
   .. Exit edit mode: <esc>
   . Save and exit: `wq <enter>`
  
positive.code: . Run: `update-grub`
  . Run: `update-initramfs -u`
  
  Reboot the host.
  
  `ll /sys/bus/pci/drivers/vfio-pci/* | grep 28:00`
  
  //echo "blacklist nvidia" >> /etc/modprobe.d/blacklist.conf 
  // https://pve.proxmox.com/wiki/Pci_passthrough 
  
  // lspci -nn | grep `lspci | grep VGA | cut -d "." -f1` 
  
  === Emulation Settings
  
negative.code: . Exit edit mode: <esc>
  . Save and exit: `wq <enter>`
  
  Update boot settings to enable IOMMU with pass-through mode and loads vfio-pci first so that framebuffer drivers, nouveau, nvidia, and others don’t grab it first while booting. Afterward we need to commit the changes to grub and generate a new initrd image.
  
  . Type: `vi /etc/default/grub`
  