linux-kernel - Re: [PATCH 0/8] Virtio-over-PCIe on non-MIC

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Message-ID: <20190117151529.GA3471@infradead.org>
Date:   Thu, 17 Jan 2019 07:15:29 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Vincent Whitchurch <vincent.whitchurch@...s.com>,
        sudeep.dutt@...el.com, ashutosh.dixit@...el.com,
        gregkh <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-pci <linux-pci@...r.kernel.org>,
        linux-ntb@...glegroups.com, Jon Mason <jdmason@...zu.us>,
        Dave Jiang <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>
Subject: Re: [PATCH 0/8] Virtio-over-PCIe on non-MIC

On Thu, Jan 17, 2019 at 01:39:27PM +0100, Arnd Bergmann wrote:
> Can you describe how you expect a VOP device over NTB or
> PCIe-endpoint would get created, configured and used?
> Is there always one master side that is responsible for creating
> virtio devices on it, with the slave side automatically attaching to
> them, or can either side create virtio devices? Is there any limit on
> the number of virtio devices or queues within a VOP device?

For VOP device over NTB your configure your device using configfs
on one side, and for the other side it will just show up like any
other PCIe device, because it is.