Systems and methods in a graphics environment for providing shared virtual memory addressing support for a host system

A graphics processing unit, comprising:

• processing resources to perform graphics operations;
• and
• memory management circuitry coupled to the processing resources, the memory management circuitry having a unified memory feature to support multiple virtual address widths for managing allocation of non-shared virtual memory and for managing allocation of shared virtual memory in a virtual address space.

A computer implemented method for providing unified memory feature of a graphics multiprocessor, comprising:

• setting an address field for a memory access to indicate whether to support a first virtual address size for managing allocation of non-shared virtual memory in a virtual address space or to support a second virtual address size for managing allocation of shared virtual memory in the virtual address space that is shared between the graphics multiprocessor and a host;
• and
• reading the address field for the memory access to determine whether to support the first virtual address size or to support the second virtual address size.