White Paper

SECURITY ANAL YSIS OF AMD PREDICTIVE STORE FORWARDING

SECURITY ANAL YSIS OF AMD PREDICTIVE STORE FORWARDING

Pages 7 Pages

This white paper from AMD provides a security analysis of Predictive Store Forwarding (PSF), a hardware-based optimization featured in AMD Zen3 and newer processors. PSF enhances code execution performance by predicting dependencies between loads and stores, allowing the processor to speculatively execute instructions similarly to branch prediction. The August 2023 update includes a new section on “Enhanced Predictive Store Forwarding,” detailing advancements in 4th generation AMD Zen processors that further improve this feature’s efficiency and security implications.

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