Old driver for pSeries serial port (/dev/hvsi*)

modulename: hvsi.ko

configname: CONFIG_HVC_OLD_HVSI

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Old driver for pSeries serial port (/dev/hvsi*)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/tty/hvc/hvsi.c