Mastering Proxmox - Third Edition

Configuring PCI passthrough

In Proxmox it is possible to passthrough PCI devices directly into a VM. In this section, we are going to see how to configure and verify PCI passthrough. The following steps are to enable and configure PCI passthrough in Proxmox:

1. Log in to the Proxmox node through SSH or directly in the console.
2. Open the grub configuration file using an editor:

        # nano /etc/default/grub 

3. Change GRUB_CMDLINE_LINUX_DEFAULT="quiet" to the following:

• • For Intel CPUs:

                  GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on"    

• • For AMD CPUs:

                  GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on"  

4. Save the changes and exit the editor.
5. Run the following command to update grub:

        # update-grub

6. Only if using an AMD CPU, add the following ...