Memory tiering techniques in computing systems

A hardware memory controller configured to manage operations of a first memory and a second memory, the memory controller having instructions executable by the memory controller to perform operations comprising:

• receiving a request from a processor to read data corresponding to a system memory section from a cache of the processor;
• retrieving, from a first section in a first memory, data and metadata, the metadata encoding data location information of multiple system memory sections in the first section of the first memory, a second section of the first memory, and one or more additional sections in a second memory;
• analyzing the data location information in the retrieved metadata to determine that the first section in the first memory currently contains data corresponding to the system memory section in the received request;
• and
• in response to determining that the first section in the first memory currently contains data corresponding to the system memory section in the received request, transmitting the retrieved data from the first section in the first memory to the processor in response to the received request.

A computer-implemented method of memory management, the method comprising:

• receiving a request from a processor to read data corresponding to a system memory section from a cache of the processor;
• retrieving, from a first section in a first memory, data and metadata, the metadata encoding data location information of multiple system memory sections in the first section of the first memory, a second section of the first memory, and one or more additional sections in a second memory;
• analyzing the data location information in the retrieved metadata to determine that the first section in the first memory currently does not contain data corresponding to the system memory section in the received request;
• and
• in response to determining that the first section in the first memory currently does not contain data corresponding to the system memory section in the received request:
• further analyzing the data location information in the retrieved metadata to identify whether the second section in the first memory or a memory location in the second memory contains data corresponding to the system memory section in the received request;
• and
• retrieving the data from the second section in the first memory or the memory location in the second memory and providing the retrieved data to the processor in response to the received request.