A memory device access control method, program product, device and medium

Abstract

The application discloses a memory device access control method, a program product, a device and a medium, and relates to the technical field of computers, and comprises the following steps: configuring a first memory address space and a second memory address space for a dynamic random access memory medium and a flash memory medium of a memory device respectively; dividing the dynamic random access memory medium into a first storage area and a second storage area; the first storage area is mapped to the first memory address space, and is used for storing preset high-access-demand data by a host; the second storage area is a cache of the flash memory medium, and is used for temporarily storing preset low-access-demand data and nonvolatile data; and routing a memory access request to a corresponding storage area. The application solves the problems that capacity expansion of a CXL-DRAM memory expansion device significantly increases cost and does not support nonvolatile characteristics, and solves the problems that a CXL-SSD solid-state storage device has a slower access speed than a CXL-DRAM and the speed depends on the memory capacity of a device side.

Images