virtio-comment message

Subject: Question regarding packed ring Virtio 1.1 feature

From: Yuri Benditovich <ybendito@redhat.com>
To: virtio-comment@lists.oasis-open.org
Date: Thu, 21 Nov 2019 08:40:29 -0500 (EST)

Hi,

From the spec it looks like the device must maintain backward compatibility with Virt 1.0 split queue implementation and use the packed one only when negotiated.
What is the rational of such limitation, especially in case of true hardware device?

Thanks,
Yuri Benditovich
 

Follow-Ups:
- Re: [virtio-comment] Question regarding packed ring Virtio 1.1 feature
  - From: "Michael S. Tsirkin" <mst@redhat.com>