Component Type: kbuild config

Description: Harden the branch predictor against aliasing attacks

More info: Speculation attacks against some high-performance processors rely on being able to manipulate the branch predictor for a victim context by executing aliasing branches in the attacker context. Such attacks can be partially mitigated against by clearing internal branch predictor state and limiting the prediction logic in some situations. This config option will take CPU-specific actions to harden the branch predictor against aliasing attacks and may rely on specific instruction sequences or control bits being set by the system firmware. If unsure, say Y.

Build project: Kconfig (Linux kconfig) (Path: arch\arm\mm\Kconfig )

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