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CONFIG_ARM64_ERRATUM_1188873: 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_1188873 has multiple definitions:

Cortex-A76/Neoverse-N1: MRC read following MRRC read of specific Generic Timer in AArch32 might give incorrect result found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_ERRATUM_1188873:

Help text

This option adds a workaround for ARM Cortex-A76/Neoverse-N1 erratum 1188873.

Affected Cortex-A76/Neoverse-N1 cores (r0p0, r1p0, r2p0) could cause register corruption when accessing the timer registers from AArch32 userspace.

If unsure, say Y.

Cortex-A76: MRC read following MRRC read of specific Generic Timer in AArch32 might give incorrect result found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_ERRATUM_1188873:

Help text

This option adds work arounds for ARM Cortex-A76 erratum 1188873

Affected Cortex-A76 cores (r0p0, r1p0, r2p0) could cause register corruption when accessing the timer registers from AArch32 userspace.

If unsure, say Y.

Hardware

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