On Mon, Oct 17, 2011 at 01:15:56PM +0200, Jan Kiszka wrote: > On 2011-10-17 12:56, Avi Kivity wrote: > > On 10/17/2011 11:27 AM, Jan Kiszka wrote: > >> So far we deliver MSI messages by writing them into the target MMIO > >> area. This reflects what happens on hardware, but imposes some > >> limitations on the emulation when introducing KVM in-kernel irqchip > >> models. For those we will need to track the message origin. > > > > Why do we need to track the message origin? Emulated interrupt remapping? > > The origin holds the routing cache which we need to track if the message > already has a route (and that without searching long lists) and to > update that route instead of add another one.
Hmm, yes, but if the device does stl_phys or something like this, it won't work with irqchip, will it? And it should, ideally. -- MST
