AMD: Predictive Store Forwarding PSF

[grarpamp]

Shouldn't this get a kernel option, sysctl, test app...?

https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf

AMD advised customers last week to disable a new
performance feature if they plan to use CPUs for sensitive operations,
as this feature is vulnerable to Spectre-like side-channel attacks.
Called Predictive Store Forwarding (PSF), this feature was added to
AMD CPUs part of the company's Zen 3 core architecture.