Storage device buffer in system memory space

An information handling system may include a resistive memory buffer to supplement a system main memory unit of the information handling system. A processor of the information handling system may map the resistive memory buffer as system memory, along with the system main memory unit. The processor may use the system memory, including the resistive memory buffer and the system main memory unit in executing one or more applications. The resistive memory buffer may improve performance of the information handling system, such as during hibernation and wake-up processes and memory flush processes.