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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Also I expect the platform/cost to go down dramatically this year; Lattice ECP5 is pretty much the next big open source FPGA target and there's already a PCIe implementation in the works (that isn't hacked Lattice code like we used in 2015):https://github.com/whitequark/Yumewatari …
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Exciting / terrifying
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