Il 19/06/2014 11:53, Tiejun Chen ha scritto: > so this mean that isa bridge is still represented with Dev31:Func0 > like the native OS. Furthermore, currently we're pushing VGA > passthrough support into qemu upstream, and with some discussion, > we wouldn't set the bridge class type and just expose this devfn.
Even this is not really optimal. It just happens to work just because QEMU's machine is currently a PCI machine with the ISA bridge on 00:01.0. As soon as you'll try doing integrated graphics passthrough on a PCIe machine type (such as QEMU's "-M q35") things will break down just as badly. Paolo