CONFIG_ARM_ERRATA_458693 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
ARM errata: Processor deadlock when a false hazard is created
configname: CONFIG_ARM_ERRATA_458693
Linux Kernel Configuration
└─>System Type
└─>ARM errata: Processor deadlock when a false hazard is created
In linux kernel since version 2.6.30 (release Date: 2009-06-09)
This option enables the workaround for the 458693 Cortex-A8 (r2p0)
erratum. For very specific sequences of memory operations, it is
possible for a hazard condition intended for a cache line to instead
be incorrectly associated with a different cache line. This false
hazard might then cause a processor deadlock. The workaround enables
the L1 caching of the NEON accesses and disables the PLD instruction
in the ACTLR register. Note that setting specific bits in the ACTLR
register may not be available in non-secure mode and thus is not
available on a multiplatform kernel. This should be applied by the
bootloader instead.
erratum. For very specific sequences of memory operations, it is
possible for a hazard condition intended for a cache line to instead
be incorrectly associated with a different cache line. This false
hazard might then cause a processor deadlock. The workaround enables
the L1 caching of the NEON accesses and disables the PLD instruction
in the ACTLR register. Note that setting specific bits in the ACTLR
register may not be available in non-secure mode and thus is not
available on a multiplatform kernel. This should be applied by the
bootloader instead.