[westurner]

> no project, closed or open has made configuring pcie passthrough easy

"GPU passthrough with libvirt qemu kvm" https://wiki.gentoo.org/wiki/GPU_passthrough_with_libvirt_qe...

"PCI passthrough via OVMF" https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF :

> The Open Virtual Machine Firmware (OVMF) is a project to enable UEFI support for virtual machines. Starting with Linux 3.9 and recent versions of QEMU, it is now possible to passthrough a graphics card, offering the virtual machine native graphics performance which is useful for graphic-intensive tasks

KVM-GPU-Passthrough: https://github.com/BigAnteater/KVM-GPU-Passthrough

https://clayfreeman.github.io/gpu-passthrough/

[IntelMiner]

I don't think that linking two different Wiki's (for different Linux distros) and two different github posts is "easy" compared to VirtualBox's very "fisher price" Next-Next-Next-Done GUI

Not saying I prefer one or the other, but it's worth bearing in mind where "the bar" is

[westurner]

FWICS from scanning those resources, there are a few shell commands to wrap with a config parser and an output parser for a GUI

E.g. virt-manager is built with glade XML and Python:

virt-manager/virt-manager//ui/createvm.ui: https://github.com/virt-manager/virt-manager/blob/main/ui/cr...

virt-manager/virt-manager//ui/gfxdetails.ui: https://github.com/virt-manager/virt-manager/blob/main/ui/gf...

virt-manager/virt-manager//ui/hoststorage.ui: https://github.com/virt-manager/virt-manager/blob/main/ui/ho...

virtManager/createvm.py: https://github.com/virt-manager/virt-manager/blob/main/virtM...

virtManager/device/addstorage.py: https://github.com/virt-manager/virt-manager/blob/main/virtM...

virtManager/device/gfxdetails.py: https://github.com/virt-manager/virt-manager/blob/main/virtM...

virtManager/addhardware.py:

  DeviceController.TYPE_PCI

    def populate_controller_model_combo(combo, controller_type): 

https://github.com/virt-manager/virt-manager/blob/135cf17072... https://github.com/virt-manager/virt-manager/blob/135cf17072...

[westurner]

"Locating the GPU": https://clayfreeman.github.io/gpu-passthrough/#locating-the-... :

  for d in /sys/kernel/iommu_groups/*/devices/*; do
    n=${d#*/iommu_groups/*}; n=${n%%/*}
    printf 'IOMMU Group %s ' "$n"
    lspci -nns "${d##*/}"
  done;

iommu.sh gist: https://gist.github.com/Roliga/d81418b0a55ca7682227d57af2778...

iommu_groups.sh: https://github.com/drewmullen/pci-passthrough-ryzen/blob/mas... :

  lspci -nns "${d##*/}"

"PCI passthrough via OVMF > 2. Setting up IOMMU > 2.2 Ensuring that the groups are valid": https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF#En... :

> An IOMMU group is the smallest set of physical devices that can be passed to a virtual machine. For instance, in the example above, both the GPU in 06:00.0 and its audio controller in 6:00.1 belong to IOMMU group 13 and can only be passed together. The frontal USB controller, however, has its own group (group 2) which is separate from both the USB expansion controller (group 10) and the rear USB controller (group 4), meaning that any of them could be passed to a virtual machine without affecting the others.

"Exporting your ROM": https://github.com/BigAnteater/KVM-GPU-Passthrough?tab=readm... :

  lspci -vnn
  find /sys/devices -name rom

  # PATH_TO_ROM=

  echo 1 > $PATH_TO_ROM
  mkdir -p /var/lib/libvirt/vbios/
  cat $PATH_TO_ROM > 
  /var/lib/libvirt/vbios/gpu.rom
  echo 0 > $PATH_TO_ROM

"Attaching the GPU" [with `virsh`] https://clayfreeman.github.io/gpu-passthrough/#attaching-the... :

  <hostdev mode='subsystem' type='pci' managed='yes'>
    <rom file='/path/to/gpu-dump.rom'/>
    <source>
      <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </source>
  </hostdev>
  <hostdev mode='subsystem' type='pci' managed='yes'>
    <source>
      <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>
    </source>
  </hostdev>

"Adding your GPU and USB devices to the VM" [with `virt-manager`]: https://github.com/BigAnteater/KVM-GPU-Passthrough?tab=readm...

> 1. Add every PCI device which has to do with your graphics card to the VM.

[IntelMiner]

That's still MASSIVELY more complex than "Next -> Next -> Next -> Done"