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CONFIG_ARM64_ERRATUM_1418040: Cortex-A76/Neoverse-N1: MRC read following MRRC read of specific Generic Timer in AArch32 might give incorrect result

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_1418040:

Help text

This option adds a workaround for ARM Cortex-A76/Neoverse-N1 errata 1188873 and 1418040.

Affected Cortex-A76/Neoverse-N1 cores (r0p0 to r3p1) could cause register corruption when accessing the timer registers from AArch32 userspace.

If unsure, say Y.

Hardware

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