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Re: [Xen-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support

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) with QEMU doing the emulation for current-generation devices.

> (not exactly _this_ hack, but at least no improper relationship among

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.


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