kernelconfig_penguin
CONFIG_ARM64_ERRATUM_826319 is not available for the default architecture x86.
Result is shown for architecture arm64

Cortex-A53: 826319: System might deadlock if a write cannot complete until read data is accepted

configname: CONFIG_ARM64_ERRATUM_826319

Linux Kernel Configuration
└─> Kernel Features
└─> ARM errata workarounds via the alternatives framework
└─> Cortex-A53: 826319: System might deadlock if a write cannot complete until read data is accepted

This option adds an alternative code sequence to work around ARM
erratum 826319 on Cortex-A53 parts up to r0p2 with an AMBA 4 ACE or
AXI master interface and an L2 cache.

If a Cortex-A53 uses an AMBA AXI4 ACE interface to other processors
and is unable to accept a certain write via this interface, it will
not progress on read data presented on the read data channel and the
system can deadlock.

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.