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CONFIG_ARM64_ERRATUM_2966298: Cortex-A520: 2966298: workaround for speculatively executed unprivileged load

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_2966298:

Help text

This option adds the workaround for ARM Cortex-A520 erratum 2966298.

On an affected Cortex-A520 core, a speculatively executed unprivileged load might leak data from a privileged level via a cache side channel.

Work around this problem by executing a TLBI before returning to EL0.

If unsure, say Y.

Hardware

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