PCI Endpoint Virtual NTB driver

modulename: pci-epf-vntb.ko

configname: CONFIG_PCI_EPF_VNTB

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>PCI Endpoint
└─>PCI Endpoint Virtual NTB driver
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Select this configuration option to enable the Non-Transparent
Bridge (NTB) driver for PCIe Endpoint. NTB driver implements NTB
between PCI Root Port and PCIe Endpoint.

If in doubt, say "N" to disable Endpoint NTB driver.

source code: