Isochronous agent data pinning in a multi-level memory system

A method comprising:

• receiving, from a memory agent, a request to retrieve a first memory page in a multi-level memory system, the multi-level memory system comprising a near memory and a far memory;
• retrieving the first memory page from the far memory and writing the first memory page to the near memory;
• comparing, by a memory controller in a processing device, an address, in the far memory, of the first memory page identified in the request to a range of memory addresses indicated in a static memory range register of the memory control unit;
• determining, by the memory controller in the processing device, that the range of memory addresses indicated in the static memory range register comprises the memory address of the first memory page;
• in response to the range of memory addresses indicated in the static memory range register comprising the memory address of the first memory page, marking, by the memory controller in the processing device, the first memory page as pinned in the near memory, wherein marking the first memory page as pinned comprises setting a pinning bit corresponding to the first memory page in a cache descriptor table maintained by the memory controller;
• and
• preventing the first memory page from being evicted from the near memory when the first memory page is marked as pinned.

A system comprising:

• a multi-level memory system comprising a near memory and a far memory;
• and
• a processing device, communicably coupled to the multi-level memory system, the processing device to:
• receive, from a memory agent, a request to retrieve a first memory page in the multi-level memory system;
• retrieve the first memory page from the far memory and write the first memory page to the near memory;
• compare an address, in the far memory, of the first memory page identified in the request to a range of memory addresses indicated in a static memory range register of the memory control unit;
• determine that the range of memory addresses indicated in the static memory range register comprises the memory address of the first memory page;
• in response to the range of memory addresses indicated in the static memory range register comprising the memory address of the first memory page, mark the first memory page as pinned in the near memory, wherein to mark the first memory page as pinned, the processing device to set a pinning bit corresponding to the first memory page in a cache descriptor table maintained by the memory controller;
• and
• prevent the first memory page from being evicted from the near memory when the first memory page is marked as pinned.