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by strstr 298 days ago
Allegedly some of the anticheats are configuring the IOMMU through Windows APIs (vanguard, faceit, and a smattering of chinese anticheats). It’s hard to find good public information though. They do some mix of blocking access and deliberately leaving some pages as bait (and monitoring iommu d-bits/faults)
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Riot documents the need to have IOMMU support enabled for Vanguard: https://support-valorant.riotgames.com/hc/en-us/articles/222...