Re: [PATCH v3 00/23] vfio-user client

[John Levon <john.levon@nutanix.com>]

On Fri, Jun 20, 2025 at 10:32:10AM +0200, Cédric Le Goater wrote:

> Before merging, I would like to be able to experiment a minimum.
> 
> Does a dummy device (server side) implementation exist ? and a
> GH repo I could pull the code from.
> 
> John,
> 
> How do you test ?

I use these scripts for smoke-testing:

https://github.com/jlevon/grot/blob/master/tests/vfio-user/run.sh
is easiest - you just need to compile libvfio-user and qemu
and you should be good if you have a suitable Linux image.

See https://github.com/nutanix/libvfio-user/blob/master/docs/qemu.md
if you need an image that has the relevant kernel module, and for some basic
testing instructions.

https://github.com/jlevon/grot/blob/master/tests/vfio-user/spdk-run.sh
is a more complete test - covers mmaps both ways etc. You can test this by
interacting with the vNVMe device inside your VM.

See https://github.com/nutanix/libvfio-user/blob/master/docs/spdk.md

The qemu and live migration sections there are obviously stale.

Please let me know if you hit problems.

regards
john