Device driver to enable PRTL support

modulename: ibm_rtl.ko

configname: CONFIG_IBM_RTL

Linux Kernel Configuration
└─>Device Drivers
└─>X86 Platform Specific Device Drivers
└─>PCI support
└─>Device driver to enable PRTL support
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Enable support for IBM Premium Real Time Mode (PRTM).
This module will allow you the enter and exit PRTM in the BIOS via
sysfs on platforms that support this feature. System in PRTM will
not receive CPU-generated SMIs for recoverable errors. Use of this
feature without proper support may void your hardware warranty.

If the proper BIOS support is found the driver will load and create
/sys/devices/system/ibm_rtl/. The "state" variable will indicate
whether or not the BIOS is in PRTM.
state = 0 (BIOS SMIs on)
state = 1 (BIOS SMIs off)

source code: