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Diffstat (limited to 'split-ring.tex')
| -rw-r--r-- | split-ring.tex | 4 |
1 files changed, 4 insertions, 0 deletions
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, |