CONFIG_ARM64_ERRATUM_1742098: Cortex-A57/A72: 1742098: ELR recorded incorrectly on interrupt taken between cryptographic instructions in a sequence

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_1742098:

• prompt: Cortex-A57/A72: 1742098: ELR recorded incorrectly on interrupt taken between cryptographic instructions in a sequence
• type: bool
• depends on: CONFIG_COMPAT
• defined in arch/arm64/Kconfig
• found in Linux kernels: 6.0–6.12, 6.13-rc+HEAD

Help text

This option removes the AES hwcap for aarch32 user-space to workaround erratum 1742098 on Cortex-A57 and Cortex-A72.

Affected parts may corrupt the AES state if an interrupt is taken between a pair of AES instructions. These instructions are only present if the cryptography extensions are present. All software should have a fallback implementation for CPUs that don't implement the cryptography extensions.

If unsure, say Y.

Hardware

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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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