From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: Support for configurable PCIe endpoint
Date: Wed, 3 Aug 2016 10:27:36 -0700
Message-ID: <20160803172736.GA12989@infradead.org>
References: <57A18927.9070003@ti.com> <20160803094747.GA10170@infradead.org>
 <2460140.yVuTYYqBTX@wuerfel>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org>
Content-Disposition: inline
In-Reply-To: <2460140.yVuTYYqBTX@wuerfel>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org
To: Arnd Bergmann <arnd@arndb.de>
Cc: Gabriele Paoloni <gabriele.paoloni@huawei.com>, David Daney <david.daney@cavium.com>, "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>, Thierry Reding <thierry.reding@gmail.com>, Tanmay Inamdar <tinamdar@apm.com>, Joao Pinto <jpinto@synopsys.com>, Pratyush Anand <pratyush.anand@gmail.com>, Kishon Vijay Abraham I <kishon@ti.com>, Christoph Hellwig <hch@infradead.org>, Murali Karicheri <m-karicheri2@ti.com>, Jason Cooper <jason@lakedaemon.net>, Simon Horman <horms@verge.net.au>, "bhelgaas@google.com" <bhelgaas@google.com>, Mingkai Hu <mingkai.hu@freescale.com>, "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Thomas Petazzoni <thomas.petazzoni@free-electrons.com>, Jingoo Han <jingoohan1@gmail.com>, Richard Zhu <Richard.Zhu@freescale.com>, "linux-kernel@vger.kernel.org" <linux-ke>
List-Id: linux-omap@vger.kernel.org

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.