This patch documents console special case where vq buffers are deleted at port hotunplug time. This behavior is different in other devices where vq buffers are deleted at device unplug time.
Signed-off-by: Pankaj Gupta <[email protected]> --- content.tex | 2 ++ 1 file changed, 2 insertions(+) diff --git a/content.tex b/content.tex index ee0d7c9..33e8ccc 100644 --- a/content.tex +++ b/content.tex @@ -497,6 +497,8 @@ \section{Device Cleanup}\label{sec:General Initialization And Device Operation / of a live virtqueue. Thus a driver MUST ensure a virtqueue isn't live (by device reset) before removing exposed buffers. +Console has a special property that when port is detached virtqueue is considered stopped, device +must not use any buffers, and it is legal to take buffers out of the device. \chapter{Virtio Transport Options}\label{sec:Virtio Transport Options} -- 2.21.0 --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
