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From: Logan Gunthorpe <logang@deltatee.com>
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Date: Mon, 7 Nov 2016 10:09:29 -0700
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Subject: Re: [Qemu-devel] [Qemu-block] [PATCH] Added iopmem device emulation
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel@redhat.com>, qemu-devel@nongnu.org, qemu-block@nongnu.org, Stephen Bates <sbates@raithlin.com>

Hey,

On 07/11/16 03:28 AM, Stefan Hajnoczi wrote:
> It may be too early to merge this code into qemu.git if there is no
> hardware spec and this is a prototype device that is subject to change.

Fair enough, though the interface is so simple I don't know what could
possibly change.

> I'm wondering if there is a way to test or use this device if you are
> not releasing specs and code that drives the device.
> 
> Have you submitted patches to enable this device in Linux, DPDK, or any
> other project?

Yes, you can find patches to the Linux Kernel that were submitted to a
couple mailing lists at the same time as the QEMU patch:

http://www.mail-archive.com/linux-nvdimm@lists.01.org/msg01426.html

There's been a discussion as to how best to expose these devices to user
space and we may take a different approach in v2. But there has been no
indication that the PCI interface would need to change at all.

Thanks,

Logan