kernelconfig_penguin
CONFIG_ARM64_ERRATUM_1319367 is not available for the default architecture x86.
Result is shown for architecture arm64

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

configname: CONFIG_ARM64_ERRATUM_1319367

Linux Kernel Configuration
└─> Kernel Features
└─> ARM errata workarounds via the alternatives framework
└─> Cortex-A57/A72: 1319537: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation

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.