packed-ring: fix queue size for pci

PCI is the only transport that has text enforcing
a power of two size for VQs. There's no real reason
for it to do it, so document that it does not apply
with the packed rings.

Accordingly, drop the text "unless enforced by a transport"
from packed ring description.

Fixes: https://github.com/oasis-tcs/virtio-spec/issues/28
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/packed-ring.tex b/packed-ring.tex
index f24f49b..2a6c685 100644
--- a/packed-ring.tex
+++ b/packed-ring.tex
@@ -386,7 +386,7 @@ part of the virtqueue.
 Queue Size corresponds to the maximum number of descriptors in the
 virtqueue\footnote{For example, if Queue Size is 4 then at most 4 buffers
 can be queued at any given time.}.  The Queue Size value does not
-have to be a power of 2 unless enforced by the transport.
+have to be a power of 2.
 
 \drivernormative{\subsection}{Virtqueues}{Basic Facilities of a
 Virtio Device / Packed Virtqueues}