On Thu, Jun 11, 2020 at 06:35:12PM +0530, Kishon Vijay Abraham I wrote: > +++ b/Documentation/PCI/endpoint/pci-ntb-function.rst > @@ -0,0 +1,344 @@ > +.. SPDX-License-Identifier: GPL-2.0 > + > +================= > +PCI NTB Function > +================= > + > +:Author: Kishon Vijay Abraham I <kishon@xxxxxx> > + > +PCI NTB Function allows two different systems (or hosts) to communicate > +with each other by configurig the endpoint instances in such a way that > +transactions from one system is routed to the other system. At no point in this document do you expand "NTB" into Non-Transparent Bridge. The above paragraph probably also needs to say something like "By making each host appear as a device to the other host". Although maybe that's not entirely accurate? It's been a few years since I last played with NTBs. So how about the following opening paragraph: PCI Non Transparent Bridges (NTB) allow two host systems to communicate with each other by exposing each host as a device to the other host. NTBs typically support the ability to generate interrupts on the remote machine, expose memory ranges as BARs and perform DMA. They also support scratchpads which are areas of memory within the NTB that are accessible from both machines. ... feel free to fix that up if my memory is out of date or corrupted.
