Systems and methods for providing data modification operations in memory subsystems

A memory subsystem for storing and retrieving data for a processing system, the memory subsystem comprising:

• a plurality of memory devices;
• and
• a memory hub device comprising:
• a first port in communication with a memory controller via one or more memory busses for transferring data and control information between the memory hub device and the memory controller;
• a second port in communication with one or more of the memory devices;
• and
• a control unit for decoding the memory update command from the data and control information and for accessing the memory devices via the second port to perform the memory update command local to the memory hub device as a logical read-modify-write sequence.

A memory hub device comprising:

• a first port in communication with a memory controller via one or more memory busses for transferring data and control information between the memory hub device and the memory controller;
• a second port in communication with one or more memory devices;
• and
• a control unit for decoding the memory update command from the data and control information and for accessing the memory devices via the second port to perform the memory update command local to the memory hub device as a logical read-modify-write sequence.

A method for executing a memory command, the method comprising:

• receiving a memory update command including an address and update data from a memory controller, the receiving via one or more memory busses at a memory hub device that includes two or more ports;
• accessing one or more memory devices associated with the address;
• and
• performing the memory update command on the memory devices as a logical read-modify-write sequence, the performing responsive to the update data and the performing local to the memory hub device.