CONFIG_CPU_USE_DOMAINS is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_CPU_USE_DOMAINS (not configurable)
configname: CONFIG_CPU_USE_DOMAINS
Linux Kernel Configuration
└─>CPU_USE_DOMAINS
In linux kernel since version 2.6.38 (release Date: 2011-03-14)
This option enables or disables the use of domain switching
using the DACR (domain access control register) to protect memory
domains from each other. In Linux we use three domains: kernel, user
and IO. The domains are used to protect userspace from kernelspace
and to handle IO-space as a special type of memory by assigning
manager or client roles to running code (such as a process).
using the DACR (domain access control register) to protect memory
domains from each other. In Linux we use three domains: kernel, user
and IO. The domains are used to protect userspace from kernelspace
and to handle IO-space as a special type of memory by assigning
manager or client roles to running code (such as a process).