kernelconfig_penguin
CONFIG_ARM_ERRATA_821420 is not available for the default architecture x86.
Result is shown for architecture arm
depends
CONFIG_CPU_V7

ARM errata: A12: sequence of VMOV to core registers might lead to a dead lock

configname: CONFIG_ARM_ERRATA_821420

Linux Kernel Configuration
└─> System Type
└─> ARM errata: A12: sequence of VMOV to core registers might lead to a dead lock

This option enables the workaround for the 821420 Cortex-A12
(all revs) erratum. In very rare timing conditions, a sequence
of VMOV to Core registers instructions, for which the second
one is in the shadow of a branch or abort, can lead to a
deadlock when the VMOV instructions are issued out-of-order.