On Mon, Mar 08, 2021 at 02:48:30PM -0700, Alex Williamson wrote: > Using a vfio device, a notifier block can be registered to receive > select device events. Notifiers can only be registered for contained > devices, ie. they are available through a user context. Registration > of a notifier increments the reference to that container context > therefore notifiers must minimally respond to the release event by > asynchronously removing notifiers. Notifiers generally are a horrible multiplexed API. Can't we just add a proper method table for the intended communication channel?