CONFIG_ARM64_ERRATUM_1319367: Cortex-A57/A72: 1319537: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_1319367 has multiple definitions:

Cortex-A57/A72: 1319537: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_ERRATUM_1319367:

• prompt: Cortex-A57/A72: 1319537: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 5.8–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

This option adds work arounds for ARM Cortex-A57 erratum 1319537 and A72 erratum 1319367

Cortex-A57 and A72 cores could end-up with corrupted TLBs by speculating an AT instruction during a guest context switch.

If unsure, say Y.

Cortex-A57/A72: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_ERRATUM_1319367:

• prompt: Cortex-A57/A72: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 5.5–5.7

Help text

This option adds work arounds for ARM Cortex-A57 erratum 1319537 and A72 erratum 1319367

Cortex-A57 and A72 cores could end-up with corrupted TLBs by speculating an AT instruction during a guest context switch.

If unsure, say Y.

Hardware

LKDDb

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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