Neoverse-N2: 2067961: workaround TSB instruction failing to flush trace
configname: CONFIG_ARM64_ERRATUM_2067961
Linux Kernel Configuration
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Kernel Features
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ARM errata workarounds via the alternatives framework
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Neoverse-N2: 2067961: workaround TSB instruction failing to flush trace
Enable workaround for ARM Neoverse-N2 erratum 2067961
Affected cores may fail to flush the trace data on a TSB instruction, when
the PE is in trace prohibited state. This will cause losing a few bytes
of the trace cached.
Workaround is to issue two TSB consecutively on affected cores.
Affected cores may fail to flush the trace data on a TSB instruction, when
the PE is in trace prohibited state. This will cause losing a few bytes
of the trace cached.
Workaround is to issue two TSB consecutively on affected cores.
If unsure, say Y.