CONFIG_IA64_DEBUG_CMPXCHG is not available for thedefaultarchitecture x86.
Result is shown for architecture ia64
Turn on compare-and-exchange bug checking (slow!)
configname: CONFIG_IA64_DEBUG_CMPXCHG
Linux Kernel Configuration
└─>Turn on compare-and-exchange bug checking (slow!)
In linux kernel since version 2.6.12
Selecting this option turns on bug checking for the IA-64
compare-and-exchange instructions. This is slow! Itaniums
from step B3 or later don't have this problem. If you're unsure,
select N.
compare-and-exchange instructions. This is slow! Itaniums
from step B3 or later don't have this problem. If you're unsure,
select N.