From 619a2785480f3275767b81a02cead33aaba4e801 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Fri, 9 Mar 2018 23:23:34 +0200 Subject: split-ring: generalize text Update generic text to talk about available/used buffers, not rings. Move some split-ring specific text to the correct section. Update conformance section with link to the new conformance clause. Signed-off-by: Michael S. Tsirkin Approved-by: https://www.oasis-open.org/apps/org/workgroup/virtio/ballot.php?id=3177 Fixes: https://github.com/oasis-tcs/virtio-spec/issues/3 --- split-ring.tex | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'split-ring.tex') diff --git a/split-ring.tex b/split-ring.tex index 9601a53..a594d41 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). + \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, -- cgit v1.2.3