Export EFI runtime maps to sysfs

modulename: runtime-map.ko

configname: CONFIG_EFI_RUNTIME_MAP

Linux Kernel Configuration
└─>Processor type and features
└─>Export EFI runtime maps to sysfs
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Export EFI runtime memory regions to /sys/firmware/efi/runtime-map.
That memory map is required by the 2nd kernel to set up EFI virtual
mappings after kexec, but can also be used for debugging purposes.

See also