Abstract: Systems, methods, and other embodiments associated with providing dynamic switching between memory access modes are described. According to one embodiment, an apparatus includes first memory and second memory. The apparatus also includes a memory control logic configured to facilitate memory access of the first memory and the second memory using either a first memory access mode or a second memory access mode. The first memory access mode is configured to facilitate memory access of both the first memory and the second memory. The second memory access mode is configured to facilitate memory access of one of the first memory or the second memory. The memory control logic is configured to dynamically switch between the first memory access mode and the second memory access mode, without having to remap memory or reboot the system, in accordance with a region-based memory address mapping technique.