AMD’s microarchitectures seem to be vulnerable to only a few of them [9, 17]. Consequently, AMD CPUs do not require software mitigations with high performance penalties.
Additional funding was provided by generous gifts from Intel.
AMD: We are aware of a new white paper that claims potential security exploits in AMD CPUs, whereby a malicious actor could manipulate a cache-related feature to potentially transmit user data in an unintended way. The researchers then pair this data path with known and mitigated software or speculative execution side channel vulnerabilities. AMD believes these are not new speculation-based attacks.