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-rw-r--r--virtio-v1.0-wd01-part1-specification.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/virtio-v1.0-wd01-part1-specification.txt b/virtio-v1.0-wd01-part1-specification.txt
index 559ef75..e812f8d 100644
--- a/virtio-v1.0-wd01-part1-specification.txt
+++ b/virtio-v1.0-wd01-part1-specification.txt
@@ -1431,6 +1431,13 @@ configuration space. The following list presents their layout:
only when QueueReady is set to zero (0x0), so when the queue
is not in use.
+* 0x0fc | R | ConfigGeneration
+ Configuration atomicity value.
+ Changes every time the configuration noticeably changes. This
+ means the device may only change the value after a configuration
+ read operation, but it must change if there is any risk of a
+ device seeing an inconsistent configuration state.
+
* 0x100+ | RW | Config
Device-specific configuration space starts at an offset 0x100
and is accessed with byte alignment. Its meaning and size