CONFIG_ARM_ERRATA_857272 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

ARM errata: A17: CPU might deadlock under some very rare internal conditions

configname: CONFIG_ARM_ERRATA_857272

Linux Kernel Configuration
└─>System Type
└─>ARM errata: A17: CPU might deadlock under some very rare internal conditions
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This option enables the workaround for the 857272 Cortex-A17 erratum.
This erratum is not known to be fixed in any A17 revision.
This is identical to Cortex-A12 erratum 857271. It is a separate
config option from the A12 erratum due to the way errata are checked
for and handled.

depends
CONFIG_CPU_V7