The statement came in the article published by the manufacturer recently, called Security Analysis of AMD Predictive Store Forwarding (PSF). According to the report, an optimization within the Zen3 microarchitecture can be explored in a similar way as it was Specter.
O Predictive Store Forwarding it consists of hardware optimization with a focus on improving the performance of code execution, by predicting dependencies between loads and stores. It is as if the resource made provision to allow the processor to carry out instructions in the sequence with greater agility.
The affected models include the Ryzen 5000 and Epyc 7003 lines, which use the Zen3 architecture.
According to AMD, it is possible to disable the optimization. However, the absence of the feature will lead to a drop in performance. Thus, the manufacturer believes that the action is not worth it, unless there are more critical advances in CPUs.
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