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diff --git a/content.tex b/content.tex index d34685d..c9440a4 100644 --- a/content.tex +++ b/content.tex @@ -595,6 +595,9 @@ for drivers using untrusted buffers: if you do not know exactly how much has been written by the device, you usually have to zero the buffer to ensure no data leakage occurs. +\field{idx} field indicates where the driver would put the next descriptor +entry in the ring (modulo the queue size). This starts at 0, and increases. + \begin{note} The legacy \hyperref[intro:Virtio PCI Draft]{[Virtio PCI Draft]} referred to these structures as vring_used and vring_used_elem, and |