CONFIG_ARM64_ERRATUM_3117295: Cortex-A510: 3117295: workaround for speculatively executed unprivileged load

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_3117295:

• prompt: Cortex-A510: 3117295: workaround for speculatively executed unprivileged load
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 6.8–6.12, 6.13-rc+HEAD

Help text

This option adds the workaround for ARM Cortex-A510 erratum 3117295.

On an affected Cortex-A510 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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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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