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authorrusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652>2014-02-26 03:21:31 +0000
committerrusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652>2014-02-26 03:21:31 +0000
commit5421a41b6ee7e15683e47e65d73b3389b4f42953 (patch)
treeb9663e58ad9b08f0df5f435b8ff030a0db212353
parente14bfc9c42fc3bc69de6cd91d843e1bbfb7400c3 (diff)
Feedback: Normative split in Basic Facilities of a Virtio Device / Virtqueues
Signed-off-by: Rusty Russell <rusty@au1.ibm.com> git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@267 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
-rw-r--r--content.tex9
1 files changed, 6 insertions, 3 deletions
diff --git a/content.tex b/content.tex
index f58a398..1c3867a 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}