On Tue, Jan 30, 2018 at 11:45:35AM +0100, Cornelia Huck wrote:
> On Tue, 23 Jan 2018 02:01:06 +0200
> "Michael S. Tsirkin" <> wrote:
>
>
> Update generic text to talk about available/used buffers, not rings.
>
> Move some split-ring specific text to the correct section.
> >
>
> Signed-off-by: Michael S. Tsirkin <>
> > ---
>
> content.tex
| 12 +++++
-------
>
> split-ring.tex | 4 ++++
>
> 2 files changed, 9 insertions(+), 7 deletions(-)
> >
>
> diff --git a/content.tex b/content.tex
>
> index 5634c7d..0f7c2b9 100644
> > --- a/content.tex
> > +++ b/content.tex
>
> > @@ -4652,7 +4650,7 @@ Interface: Device Operation}
>
> When using the legacy interface, the driver SHOULD ignore the
>
> used length values.
> > \begin{note}
> > -Historically, devices put the total descriptor length,
> > +Historically, devices put the total length,
>
> or the total length of device-writable buffers there,
>
> even when only part of the buffers were actually written.
>
> This sentence reads a bit weirdly now. Total length of what?
Of readable and writeable buffers.
> > \end{note}
>
> diff --git a/split-ring.tex b/split-ring.tex
>
> index acdee7d..f976e45 100644
> > --- a/split-ring.tex
> > +++ b/split-ring.tex
> > @@ -296,6 +296,10 @@ referred to this structure as vring_avail, and the constant as
>
> VRING_AVAIL_F_NO_INTERRUPT, but the layout and value were identical.
> > \end{note}
> >
> > +\drivernormative{\subsubsection}{The Virtqueue Available Ring}{Basic Facilities of a Virtio Device / Virtqueues / The Virtqueue Available Ring}
> > +A driver MUST NOT decrement the available \field{idx} on a virtqueue (ie.
> > +there is no way to ``unexpose'' buffers).
>
> Don't you need to reference that drivernormative section?
Right, I forgot that part. Will do.
>
> (It is a bit confusing with all those interim changes; maybe I should
> only review the end result...)
> > +
> > \subsection{Virtqueue Interrupt Suppression}\label{sec:Basic Facilities of a Virtio Device / Virtqueues / Virtqueue Interrupt Suppression}
> >
>
> If the VIRTIO_F_EVENT_IDX feature bit is not negotiated,
