Re: [Qemu-devel] [virtio-comment] [PATCH] *** Vhost-pci RFC v2 ***

On Sat, Sep 3, 2016 at 5:36 PM Wang, Wei W <wei.w.wang@intel.com> wrote:

Marc-André and I just got different thoughts about a design direction. I prefer to have all the frontend virtio devices (net, scsi, console etc.) from the same VM to be supported by one backend vhost-pci device (N-1), while Marc-André prefers to have each frontend virtio device be supported by a backend vhost-pci device (N-N).

I suggested 1-1 (not n-n, but you can have several 1-1 pairs), unless you have a good reason to do differently, starting from the use case (is there a case that requires several backends/consumers in the same VM? if yes, 1-1 design could still fit). If it's to save guest memory space, it may not be a good enough reason, but I don't see clearly the implications.

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