Apparatus and method for memory management in a graphics processing environment

A method comprising:

• executing graphics commands and processing graphics data on a first plurality of graphics processing resources, the first plurality of graphics processing resources being coupled to a system-level MMU to access a system memory via a first memory management unit (MMU);
• executing graphics commands and processing graphics data on a second plurality of graphics processing resources the, second plurality of graphics processing resources being coupled to the first MMU via a second MMU;
• configuring the first MMU as a master MMU having a direct connection to the system-level MMU;
• configuring the second MMU as a slave MMU configured to send memory transactions to the first MMU;
• and
• servicing a memory transaction generated by the second MMU at the first MMU, the first MMU sending the memory transaction to the system-level MMU on behalf of the second MMU if the first MMU cannot service the memory transaction itself.

A non-transitory machine-readable medium having program code stored thereon which, when executed by a machine, causes the machine to perform the operations of:

• executing graphics commands and processing graphics data on a first plurality of graphics processing resources, the first plurality of graphics processing resources being coupled to a system-level MMU to access a system memory via a first memory management unit (MMU);
• executing graphics commands and processing graphics data on a second plurality of graphics processing resources the, second plurality of graphics processing resources being coupled to the first MMU via a second MMU;
• configuring the first MMU as a master MMU having a direct connection to the system-level MMU;
• configuring the second MMU as a slave MMU configured to send memory transactions to the first MMU;
• and
• servicing a memory transaction generated by the second MMU at the first MMU, the first MMU sending the memory transaction to the system-level MMU on behalf of the second MMU if the first MMU cannot service the memory transaction itself.