公开(公告)号：US20200151094A1

公开(公告)日：2020-05-14

申请号：US16184597

申请日：2018-11-08

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： DEREK E. WILLIAMS ,  GUY L. GUTHRIE ,  JOHN DODSON

IPC分类号： G06F12/0804

摘要： A data processing system includes a plurality of processing units and a system memory coupled to a memory controller. The system memory includes a persistent memory device and a non-persistent cache interposed between the memory controller and the persistent memory device. The memory controller receives a flush request of a particular processing unit among the plurality of processing units, the flush request specifying a target address. The memory controller, responsive to the flush request, ensures flushing of a target cache line of data identified by target address from the non-persistent cache into the persistent memory device.