CONFIG_ARM64_ERRATUM_2457168 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Cortex-A510: 2457168: workaround for AMEVCNTR01 incrementing incorrectly
configname: CONFIG_ARM64_ERRATUM_2457168
Linux Kernel Configuration
└─>Kernel Features
└─>ARM errata workarounds via the alternatives framework
└─>Cortex-A510: 2457168: workaround for AMEVCNTR01 incrementing incorrectly
In linux kernel since version 5.2 (release Date: 2019-07-07)
This option adds the workaround for ARM Cortex-A510 erratum 2457168.
The AMU counter AMEVCNTR01 (constant counter) should increment at the same rate
as the system counter. On affected Cortex-A510 cores AMEVCNTR01 increments
incorrectly giving a significantly higher output value.
Work around this problem by returning 0 when reading the affected counter in
key locations that results in disabling all users of this counter. This effect
is the same to firmware disabling affected counters.
If unsure, say Y.
The AMU counter AMEVCNTR01 (constant counter) should increment at the same rate
as the system counter. On affected Cortex-A510 cores AMEVCNTR01 increments
incorrectly giving a significantly higher output value.
Work around this problem by returning 0 when reading the affected counter in
key locations that results in disabling all users of this counter. This effect
is the same to firmware disabling affected counters.
If unsure, say Y.