On Thu, Jun 26, 2014 at 03:30:11PM +0200, Paolo Bonzini wrote: > Il 26/06/2014 13:36, Michael S. Tsirkin ha scritto: > >>It should be this way in real hardware too > >But it isn't. > > That's why I mentioned that this hack should become architecturally > specified (since it can work on real hardware too)
Someone will have to implement it on real hardware first :) As long as no one does it's really PV. I have no problem with PV as such, however 1. let's try to make it look less like a one-off hack 2. let's start with proper emulation, pv as step 2 > with QEMU doing the > emulation for current-generation devices. > > >> (not exactly _this_ hack, but at least no improper relationship among > >> IGD/MCH/PCH). > > > >Well that dependency between devices is common for embedded hardware, > >and this is what we have here. > > Sure, but then you should put MCH/PCH/IGD in the same IOMMU group, which > basically means forgetting about IGD assignment. > > Paolo I don't see why. We emulate parts of devices (e.g. BARs), ISA bridge/MCH is just such part of device that we emulate. -- MST
