content: Add vq index text

Introduce vq index and its range so that subsequent patches can refer to it. Fixes: oasis-tcs#163 Reviewed-by: David Edmondson <[email protected]> Reviewed-by: Halil Pasic <[email protected]> Signed-off-by: Parav Pandit <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]>
keiichiw · May 19, 2023 · b0fbccd · b0fbccd
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commit b0fbccd
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diff --git a/content.tex b/content.tex
@@ -342,6 +342,10 @@ \section{Virtqueues}\label{sec:Basic Facilities of a Virtio Device / Virtqueues}
 virtqueues\footnote{For example, the simplest network device has one virtqueue for
 transmit and one for receive.}.
 
+A virtio device can have maximum of 65536 virtqueues. Each virtqueue is
+identified by a virtqueue index. A virtqueue index has a value in the
+range of 0 to 65535.
+
 Driver makes requests available to device by adding
 an available buffer to the queue, i.e., adding a buffer
 describing the request to a virtqueue, and optionally triggering