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Date: Wed, 3 Aug 2016 10:27:36 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Arnd Bergmann <arnd@arndb.de>
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Subject: Re: Support for configurable PCIe endpoint
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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.