On Wednesday, August 3, 2016 10:27:36 AM CEST Christoph Hellwig wrote: > On Wed, Aug 03, 2016 at 06:03:54PM +0200, Arnd Bergmann wrote: > > drivers/ntb seems like a reasonable start, while an alternative > > approach that we have discussed in the past would be based on top > > of virtio, so we could use the existing front-end drivers (net, block, > > v9fs, console, ...). > > I don't really think either is a good aproach for the lowest level > interface. To be useful the EP driver needs to be able to implement > any (reasonable) thing a PCIe device could do. Both NTB and virtio > can sit on top of that, though. Good point. NTB tries to be the low-level interface, but I guess you are right that it really isn't (I have not looked in a long time, maybe Jon can comment). While virtio transport over PCI would be great as the way to implement a lot of things on top of endpoint devices, it can't be the lowest level in the stack (see drivers/remoteproc) and building it on top of something that is useful for other things sounds like a good idea. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
