On 22/10/2021 07:47, Juergen Gross wrote: > When booting the xenbus driver will wait for PV devices to have > connected to their backends before continuing. The timeout is different > between essential and non-essential devices. > > Non-essential devices are identified by their nodenames directly in the > xenbus driver, which requires to update this list in case a new device > type being non-essential is added (this was missed for several types > in the past). > > In order to avoid this problem, add a "not_essential" flag to struct > xenbus_driver which can be set to "true" by the respective frontend. > > Set this flag for the frontends currently regarded to be not essential > (vkbs and vfb) and use it for testing in the xenbus driver. > > Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Wouldn't it be better to annotate essential? That way, when new misc drivers come along, they don't by default block boot. ~Andrew
