CONFIG_PMB_FIXED is not available for thedefaultarchitecture x86.
Result is shown for architecture sh
fixed PMB
configname: CONFIG_PMB_FIXED
PMB handling type
└─>fixed PMB
In linux kernel since version 2.6.30 (release Date: 2009-06-09)
If this option is enabled, fixed PMB mappings are inherited
from the boot loader, and the kernel does not attempt dynamic
management. This is the closest to legacy 29-bit physical mode,
and allows systems to support up to 512MiB of system memory.
from the boot loader, and the kernel does not attempt dynamic
management. This is the closest to legacy 29-bit physical mode,
and allows systems to support up to 512MiB of system memory.