menuconfig NTB tristate "Non-Transparent Bridge support" depends on PCI help The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus connecting 2 systems. When configured, writes to the device's PCI mapped memory will be mirrored to a buffer on the remote system. The ntb Linux driver uses this point-to-point communication as a method to transfer data from one system to the other. If unsure, say N. if NTB source "drivers/ntb/hw/Kconfig" source "drivers/ntb/test/Kconfig" config NTB_TRANSPORT tristate "NTB Transport Client" help This is a transport driver that enables connected systems to exchange messages over the ntb hardware. The transport exposes a queue pair api to client drivers. If unsure, say N. endif # NTB