default or selected kernelversion does not have config value CONFIG_MK8.
Result is shown for kernelversion 6.9.9
Opteron/Athlon64/Hammer/K8
configname: CONFIG_MK8
Processor family
└─>Opteron/Athlon64/Hammer/K8
In linux kernel since version 2.6.12
Select this for an AMD Opteron or Athlon64 Hammer-family processor.
Enables use of some extended instructions, and passes appropriate
optimization flags to GCC.
Enables use of some extended instructions, and passes appropriate
optimization flags to GCC.