On Fri, 16 Feb 2018 09:24:12 +0200
"Michael S. Tsirkin" <> wrote:
> Performance analysis of this is in my kvm forum 2016 presentation. The
> idea is to have a r/w descriptor in a ring structure, replacing the used
> and available ring, index and descriptor buffer.
>
> This is also easier for devices to implement than the 1.0 layout.
> Several more enhancements will be necessary to actually make this
> efficient for devices to use.
>
> Signed-off-by: Michael S. Tsirkin <>
> ---
> content.tex | 28 ++-
> packed-ring.tex | 646 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 671 insertions(+), 3 deletions(-)
> create mode 100644 packed-ring.tex
I'm at the point where my eyes glaze over when I try to look at this
yet again, so you won't get a r-b from me, but
Acked-by: Cornelia Huck <>
