Signed-off-by: Rusty Russell <> --- content.tex
9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/content.tex b/content.tex index a2b83cd..1decb0a 100644 --- a/content.tex +++ b/content.tex @@ -214,9 +214,8 @@ Used Ring
& 4
& $6 + 4 * $(Queue Size) \
hline end{tabular}
-The Alignment column gives the minimum alignment: for each part -of the virtqueue, the physical address of the first byte -MUST be a multiple of the specified alignment value. +The Alignment column gives the minimum alignment for each part +of the virtqueue.
The Size column gives the total number of bytes required for each part of the virtqueue. @@ -233,6 +232,10 @@ writes the descriptor index into the available ring. It then notifies the device. When the device has finished a buffer, it writes the descriptor index into the used ring, and sends an interrupt.
+drivernormative{Basic Facilities of a Virtio Device / Virtqueues} +The driver MUST ensure that the physical address of the first byte +of each virtqueue part is a multiple of the specified alignment value +in the above table.
subsection{Legacy Interfaces: A Note on Virtqueue Layout}label{sec:Basic Facilities of a Virtio Device / Virtqueues / Legacy Interfaces: A Note on Virtqueue Layout}
-- 1.8.3.2
