Providing bus resiliency in a hybrid memory system

摘要

In a hybrid memory system that includes a host memory controller and a non-volatile memory DIMM, where the DIMM is coupled to the host memory controller by a memory bus, the DIMM includes non-volatile memory, a DIMM bus adapter, and a local memory controller, the local memory controller is configured to control memory accesses within the DIMM, the DIMM bus adapter is configured to adapt the local memory controller to the bus for memory communications with the host memory controller in accordance with a bus protocol, bus resiliency may be provided by: discovering, by the DIMM bus adapter, a memory error in the DIMM; providing, by the DIMM bus adapter to the host memory controller, an indication of an error by emulating a hardware error native to the bus protocol; and performing, by the host memory controller, one or more resiliency measures responsive to the indication of the error.

主权项

1. A method of providing bus resiliency in a hybrid memory system, the hybrid memory system comprising a host memory controller and a non-volatile memory DIMM (Dual Inline Memory Module), the DIMM coupled to the host memory controller by a memory bus, the DIMM comprising non-volatile memory, a DIMM bus adapter, and a local memory controller, the local memory controller configured to control memory accesses within the DIMM, the DIMM bus adapter configured to adapt the local memory controller to the bus for memory communications with the host memory controller in accordance with a bus protocol, the method comprising:
discovering, by the DIMM bus adapter, a memory error in the DIMM; providing, by the DIMM bus adapter to the host memory controller, an indication of an error by emulating a hardware error native to the bus protocol; and performing, by the host memory controller, one or more resiliency measures responsive to the indication of the error.