# Proxmox PCI Passthrough

## GPU

### Reference
* [Proxmox Wiki - PCI_Passthrough](https://pve.proxmox.com/wiki/PCI_Passthrough)
* [The Ultimate Beginner's Guide to GPU Passthrough (Proxmox, Windows 10)](https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough/)

## iGPU

1. Edit GRUB
`nano /etc/default/grub.d/igpu-passthrough.cfg`

  + GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on i915.enable_gvt=1 iommu=pt pcie_acs_override=downstream,multifunction video=efifb:off video=vesa:off vfio_iommu_type1.allow_unsafe_interrupts=1 kvm.ignore_msrs=1"

2. Update GRUB `update-grub`

3. Add modules `nano /etc/modules-load.d/igpu-passthrough.conf`

	vfio
	vfio_iommu_type1
	vfio_pci
	vfio_virqfd
	kvmgt

4. IOMMU remapping
1. `sudo echo "options vfio_iommu_type1 allow_unsafe_interrupts=1" >> /etc/modprobe.d/iommu_unsafe_interrupts.conf`
2.`sudo echo "options kvm ignore_msrs=1" >> /etc/modprobe.d/kvm.conf`

* Options Blacklist the GPU drivers `nano /etc/modprobe.d/blacklist.conf`

	blacklist radeon
	blacklist nouveau
	blacklist nvidia
	blacklist nvidiafb

5. Adding GPU to VFIO
1. find pci card address `lspci -v | grep VGA`
2. get GPU vendors number `lspci -n -s {pci_card_address}`
3. `sudo echo "options vfio-pci ids={gpu_number},{audio_number} disable_vga=1" >> /etc/modprobe.d/vfio.conf`

6. Update Settings `update-initramfs -u`
7. Restart `sudo reboot`

* VM Config

### **VM 建立 PCI device 後，就無法從 proxmox web 上連進 VM GUI，需事先建立好遠端桌面環境 ( anydesk etc... )**

### Reference
* [Integrated GPU Passthrough to a Virtual Machine in Proxmox (Step-by-Step Tutorial)](https://www.youtube.com/watch?v=UoL8YJAc-vE)
* [Alderlake direct passthrough to Linux VM is working with HDMI output!](https://forum.proxmox.com/threads/alderlake-direct-passthrough-to-linux-vm-is-working-with-hdmi-output.138049/)

## vGPU

### Reference
* [PVE-Intel-vGPU](https://github.com/Upinel/PVE-Intel-vGPU)