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Re: [Xen-devel] [RFC][PATCH] gpu:drm:i915:intel_detect_pch: back to check devfn instead of check class type

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.


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