summaryrefslogtreecommitdiff
path: root/virtio-spec.txt
diff options
context:
space:
mode:
Diffstat (limited to 'virtio-spec.txt')
-rw-r--r--virtio-spec.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/virtio-spec.txt b/virtio-spec.txt
index f7c80ec..d762461 100644
--- a/virtio-spec.txt
+++ b/virtio-spec.txt
@@ -2502,6 +2502,10 @@ Currently there are four device-independent feature bits defined:
ignore the avail_event field; the flags field is used
+In addition, bit 30 is used by qemu's implementation to check for experimental
+early versions of virtio which did not perform correct feature negotiation,
+and should not be used.
+
2.7 virtio_ring.h
=================