CONFIG_ARM64_ERRATUM_824069 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Cortex-A53: 824069: Cache line might not be marked as clean after a CleanShared snoop
configname: CONFIG_ARM64_ERRATUM_824069
Linux Kernel Configuration
└─>Kernel Features
└─>ARM errata workarounds via the alternatives framework
└─>Cortex-A53: 824069: Cache line might not be marked as clean after a CleanShared snoop
In linux kernel since version 3.10 (release Date: 2013-06-30)
This option adds an alternative code sequence to work around ARM
erratum 824069 on Cortex-A53 parts up to r0p2 when it is connected
to a coherent interconnect.
If a Cortex-A53 processor is executing a store or prefetch for
write instruction at the same time as a processor in another
cluster is executing a cache maintenance operation to the same
address, then this erratum might cause a clean cache line to be
incorrectly marked as dirty.
The workaround promotes data cache clean instructions to
data cache clean-and-invalidate.
Please note that this option does not necessarily enable the
workaround, as it depends on the alternative framework, which will
only patch the kernel if an affected CPU is detected.
If unsure, say Y.
erratum 824069 on Cortex-A53 parts up to r0p2 when it is connected
to a coherent interconnect.
If a Cortex-A53 processor is executing a store or prefetch for
write instruction at the same time as a processor in another
cluster is executing a cache maintenance operation to the same
address, then this erratum might cause a clean cache line to be
incorrectly marked as dirty.
The workaround promotes data cache clean instructions to
data cache clean-and-invalidate.
Please note that this option does not necessarily enable the
workaround, as it depends on the alternative framework, which will
only patch the kernel if an affected CPU is detected.
If unsure, say Y.