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Date: Thu, 17 Jan 2019 07:21:42 -0800
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 0/8] Virtio-over-PCIe on non-MIC
Message-ID: <20190117152142.GB20359@infradead.org>
References: <20190116163253.23780-1-vincent.whitchurch@axis.com>
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To: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Arnd Bergmann <arnd@arndb.de>, sudeep.dutt@intel.com, ashutosh.dixit@intel.com, gregkh <gregkh@linuxfoundation.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Kishon Vijay Abraham I <kishon@ti.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, linux-pci <linux-pci@vger.kernel.org>, linux-ntb@googlegroups.com, Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>, Allen Hubbe <allenbh@gmail.com>
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On Thu, Jan 17, 2019 at 04:19:06PM +0100, Vincent Whitchurch wrote:
> On the RC, a vop-host-backend driver (PCI driver) sets up some shared
> memory area which the RC and the endpoint can use to communicate the
> location of the MIC device descriptors and other information such as the
> MSI address.  It implements vop callbacks to allow the vop framework to
> obtain the address of the MIC descriptors and send/receive interrupts
> to/from the guest.

Why would we require any work on the RC / host side?  A properly
setup software controlled virtio device should just show up as a
normal PCIe device, and the virtio-pci device should bind to it.