OK, Thunderclap sounds pretty awesome. Bypassing IOMMU protections by emulating a trusted device and pushing the limits of memory regions you get access to. Technical details: https://thunderclap.io/
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Here's the part of the ATS spec that demands that all devices be well behaved and never do anything malicious like what thunderclap does:pic.twitter.com/sx38s6P0sL
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IIRC we tried this on the PS4 and it didn't actually work (presumably ATS was not supported). If Thunderbolt actually allows this then whoever thought was a good idea needs a few hits with a cluebat...
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When I first examined ATS it was only supported on server parts, i'm not sure when it trickled down to everything.
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That was pretty much our conclusion too, at the time.
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