CONFIG_ARM64_ERRATUM_2119858 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Cortex-A710/X2: 2119858: workaround TRBE overwriting trace data in FILL mode
configname: CONFIG_ARM64_ERRATUM_2119858
Linux Kernel Configuration
└─>Kernel Features
└─>ARM errata workarounds via the alternatives framework
└─>Cortex-A710/X2: 2119858: workaround TRBE overwriting trace data in FILL mode
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
This option adds the workaround for ARM Cortex-A710/X2 erratum 2119858.
Affected Cortex-A710/X2 cores could overwrite up to 3 cache lines of trace
data at the base of the buffer (pointed to by TRBASER_EL1) in FILL mode in
the event of a WRAP event.
Work around the issue by always making sure we move the TRBPTR_EL1 by
256 bytes before enabling the buffer and filling the first 256 bytes of
the buffer with ETM ignore packets upon disabling.
If unsure, say Y.
Affected Cortex-A710/X2 cores could overwrite up to 3 cache lines of trace
data at the base of the buffer (pointed to by TRBASER_EL1) in FILL mode in
the event of a WRAP event.
Work around the issue by always making sure we move the TRBPTR_EL1 by
256 bytes before enabling the buffer and filling the first 256 bytes of
the buffer with ETM ignore packets upon disabling.
If unsure, say Y.