Re: [PATCH v8] introduce vfio-user protocol specification

From: Stefan Hajnoczi <stefanha@redhat.com>
To: Thanos Makatos <thanos.makatos@nutanix.com>,
	Peter Maydell <peter.maydell@linaro.org>,
	"Michael S. Tsirkin" <mst@redhat.com>
Cc: benjamin.walker@intel.com,
	John G Johnson <john.g.johnson@oracle.com>,
	Swapnil Ingle <swapnil.ingle@nutanix.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	qemu-devel@nongnu.org, John Levon <levon@movementarian.org>,
	Kirti Wankhede <kwankhede@nvidia.com>,
	Gerd Hoffmann <kraxel@redhat.com>,
	tina.zhang@intel.com, jag.raman@oracle.com,
	james.r.harris@intel.com, John Levon <john.levon@nutanix.com>,
	Elena Ufimtseva <elena.ufimtseva@oracle.com>,
	Kanth.Ghatraju@oracle.com, Felipe Franciosi <felipe@nutanix.com>,
	marcandre.lureau@redhat.com,
	Christophe de Dinechin <cdupontd@redhat.com>,
	Yan Zhao <yan.y.zhao@intel.com>,
	konrad.wilk@oracle.com, yuvalkashtan@gmail.com,
	dgilbert@redhat.com, ismael@linux.com, changpeng.liu@intel.com,
	tomassetti.andrea@gmail.com, mpiszczek@ddn.com,
	Cornelia Huck <cohuck@redhat.com>,
	alex.williamson@redhat.com,
	Raphael Norwitz <raphael.norwitz@nutanix.com>,
	xiuchun.lu@intel.com, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v8] introduce vfio-user protocol specification
Date: Mon, 26 Apr 2021 16:48:05 +0100	[thread overview]
Message-ID: <YIbgtbUJxtuQ5PoM@stefanha-x1.localdomain> (raw)
In-Reply-To: <20210414114122.236193-1-thanos.makatos@nutanix.com>

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On Wed, Apr 14, 2021 at 04:41:22AM -0700, Thanos Makatos wrote:
> This patch introduces the vfio-user protocol specification (formerly
> known as VFIO-over-socket), which is designed to allow devices to be
> emulated outside QEMU, in a separate process. vfio-user reuses the
> existing VFIO defines, structs and concepts.
> 
> It has been earlier discussed as an RFC in:
> "RFC: use VFIO over a UNIX domain socket to implement device offloading"
> 
> Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
> Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>
> Signed-off-by: John Levon <john.levon@nutanix.com>

No review yet but I wanted to agree on the next steps once the spec has
been reviewed.

One or more of you would be added to ./MAINTAINERS and handle future
patch review and pull requests for the spec.

The spec will be unstable/experimental at least until QEMU vfio-user
implementation has landed. Otherwise it's hard to know whether the
protocol really works.

Does this sound good?

Stefan

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