Items tagged with predictive store forwarding
Intel was raked over the coals three years ago when Spectre and Meltdown vulnerabilities were first discovered that could affect its consumer and enterprise processors. The company addressed the side-channel exploits with patches and subsequent hardware revisions, but AMD is now coming under the microscope for a side-channel attack that could affect processors based on its Zen 3 architecture. The attack is similar in scope to Spectre and involves a feature introduced with Zen 3 called Predictive Store Forwarding (PSF). PSF, in effect, guesses the result of a load and uses speculative execution with subsequent commands. "In typical code, PSF provides a performance benefit by speculating...
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