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diff --git a/content.tex b/content.tex index 315cb25..c4cbe81 100644 --- a/content.tex +++ b/content.tex @@ -2569,6 +2569,17 @@ bit in the guest-provided indicator area at the corresponding offset. The guest-provided summary indicator is set to 0x01. An adapter I/O interrupt for the corresponding interruption subclass is generated. +The recommended way to process an adapter I/O interrupt by the driver +is as follows: + +\begin{itemize} +\item Process all queue indicator bits associated with the summary indicator. +\item Clear the summary indicator, performing a synchronization (memory +barrier) afterwards. +\item Process all queue indicator bits associated with the summary indicator +again. +\end{itemize} + \devicenormative{\subparagraph}{Notification via Adapter I/O Interrupts}{Virtio Transport Options / Virtio over channel I/O / Device Operation / Host->Guest Notification / Notification via Adapter I/O Interrupts} The device SHOULD only generate an adapter I/O interrupt if the |