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@@ -95,10 +95,10 @@ Feature bits are allocated as follows:
\begin{description}
\item[0 to 23] Feature bits for the specific device type
-\item[24 to 36] Feature bits reserved for extensions to the queue and
+\item[24 to 37] Feature bits reserved for extensions to the queue and
feature negotiation mechanisms
-\item[37 and above] Feature bits reserved for future extensions.
+\item[38 and above] Feature bits reserved for future extensions.
\end{description}
\begin{note}
@@ -5365,6 +5365,9 @@ Descriptors} and \ref{sec:Packed Virtqueues / Indirect Flag: Scatter-Gather Supp
better performance. This feature indicates whether
a stronger form of barrier suitable for hardware
devices is necessary.
+ \item[VIRTIO_F_SR_IOV(37)] This feature indicates that
+ the device supports Single Root I/O Virtualization.
+ Currently only PCI devices support this feature.
\end{description}
\drivernormative{\section}{Reserved Feature Bits}{Reserved Feature Bits}
@@ -5400,6 +5403,10 @@ buffers in the same order in which they have been available.
A device MAY fail to operate further if VIRTIO_F_IO_BARRIER
is not accepted.
+A device SHOULD offer VIRTIO_F_SR_IOV if it is a PCI device
+and presents a PCI SR-IOV capability structure, otherwise
+it MUST NOT offer VIRTIO_F_SR_IOV.
+
\section{Legacy Interface: Reserved Feature Bits}\label{sec:Reserved Feature Bits / Legacy Interface: Reserved Feature Bits}
Transitional devices MAY offer the following: