Re: Side attacks?
Spectre & Meltdown never worked properly on AMD chips and there are no exploits circulating in the wild beyond AMD's documentation example of how a new feature could be abused to perform an attack, which comes alongside detection & prevention methods and a method to disable the feature if desired. Any software protections for Spectre also prevent it.
https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf