kernelconfig_penguin
CONFIG_ARM64_ERRATUM_2224489 is not available for the default architecture x86.
Result is shown for architecture arm64

depends
CONFIG_CORESIGHT_TRBE

Cortex-A710/X2: 2224489: workaround TRBE writing to address out-of-range

configname: CONFIG_ARM64_ERRATUM_2224489

Linux Kernel Configuration
└─> Kernel Features
└─> ARM errata workarounds via the alternatives framework
└─> Cortex-A710/X2: 2224489: workaround TRBE writing to address out-of-range

This option adds the workaround for ARM Cortex-A710/X2 erratum 2224489.

Affected Cortex-A710/X2 cores might write to an out-of-range address, not reserved
for TRBE. Under some conditions, the TRBE might generate a write to the next
virtually addressed page following the last page of the TRBE address space
(i.e., the TRBLIMITR_EL1.LIMIT), instead of wrapping around to the base.

Work around this in the driver by always making sure that there is a
page beyond the TRBLIMITR_EL1.LIMIT, within the space allowed for the TRBE.

If unsure, say Y.