CONFIG_ARM64_ERRATUM_827319 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
Cortex-A53: 827319: Data cache clean instructions might cause overlapping transactions to the interconnect
configname: CONFIG_ARM64_ERRATUM_827319
Linux Kernel Configuration
└─>Kernel Features
└─>ARM errata workarounds via the alternatives framework
└─>Cortex-A53: 827319: Data cache clean instructions might cause overlapping transactions to the interconnect
In linux kernel since version 3.10 (release Date: 2013-06-30)
This option adds an alternative code sequence to work around ARM
erratum 827319 on Cortex-A53 parts up to r0p2 with an AMBA 5 CHI
master interface and an L2 cache.
Under certain conditions this erratum can cause a clean line eviction
to occur at the same time as another transaction to the same address
on the AMBA 5 CHI interface, which can cause data corruption if the
interconnect reorders the two transactions.
The workaround promotes data cache clean instructions to
data cache clean-and-invalidate.
Please note that this 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 827319 on Cortex-A53 parts up to r0p2 with an AMBA 5 CHI
master interface and an L2 cache.
Under certain conditions this erratum can cause a clean line eviction
to occur at the same time as another transaction to the same address
on the AMBA 5 CHI interface, which can cause data corruption if the
interconnect reorders the two transactions.
The workaround promotes data cache clean instructions to
data cache clean-and-invalidate.
Please note that this 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.