PROVIDING HARDWARE SUPPORT FOR SHARED VIRTUAL MEMORY BETWEEN LOCAL AND REMOTE PHYSICAL MEMORY

摘要

In one embodiment, the present invention includes a memory management unit (MMU) having entries to store virtual address to physical address translations, where each entry includes a location indicator to indicate whether a memory location for the corresponding entry is present in a local or remote memory. In this way, a common virtual memory space can be shared between the two memories, which may be separated by one or more non-coherent links. Other embodiments are described and claimed.

主权项

1. A processor comprising:
a first core including a first memory management unit (MMU), the first MMU including a plurality of entries to store virtual address to physical address translations; and an accelerator coupled to the first core and including a second MMU, the second MMU including a plurality of entries to store virtual address to physical address translations, wherein each entry of the first MMU includes a location field to store a first indicator to indicate whether a memory location for the corresponding entry is present in a first memory coupled to the processor or in a second memory coupled to the accelerator and an identifier field to store an identifier of the accelerator, wherein the processor is to execute a handler to convert a memory request for a memory location in the second memory to a direct memory access (DMA) transaction for communication to the second memory.