1. A computer program product for storing an application specific reliability value in a register in a memory controller, the computer program product comprising: a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to: set an initial reliability value in a register of a memory controller during an initial boot process of a computer system; and overwrite the initial reliability value in the register of the memory controller with an application specific reliability value in response to an application request to set the application specific reliability value for the application.