Thunderclap TL;DR: someone finally tried on PCs (over Thunderbolt) what we did on the PS4 (over PCIe) years ago. As I said at the time, IOMMUs are useless if the drivers are not written assuming the device is evil. *Nobody* writes PCIe drivers assuming the device is evil.
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Exciting / terrifying
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BTW, do you have more info on what platforms support ATS? We looked at that at the time and our conclusion was that nothing but big servers (where physical access isn't really a thing) supported it.
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