n Mon, Aug 2, 2021 at 10:30 PM Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote: > > On 02-08-21, 13:40, Rob Herring wrote: > > Humm, how does one implement interrupts without a parent interrupt? It > > uses the parent virtio,mmio interrupt? > > Kind of, yeah, but not necessarily. > > The interrupt information is passed over buffers shared between host and guest. > Now the guest may process the buffers when it receives a notification from the > host, that will be at downpath of an interrupt for virtio,mmio. Or the guest may > poll on the virtqueue and process any buffers as soon as they are made > available, no interrupts then. Okay, thanks for the explanation. Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Rob
