公开(公告)号：US10776281B2

公开(公告)日：2020-09-15

申请号：US16152241

申请日：2018-10-04

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Jake Truelove ,  Ronald Kalla ,  Jody Joyner ,  Benjamin Herrenschmidt ,  David A. Larson Stanton

IPC分类号： G06F12/10 ,  G06F12/1045 ,  G06F9/455

摘要： An apparatus for bypassing an invalidate search of a lookaside buffer includes a filter circuit that directs an invalidate command to a LPID/PID filter of an MMU of a processor and searches for an identifier targeted by the invalidate command. The MMU is external to cores of the processor. The apparatus includes an LPID/PID miss circuit that bypasses searching the lookaside buffer for addresses targeted by the invalidate command and returns a notification that the invalidate command did not identify the identifier targeted by the invalidate command in response to the filter circuit determining that the identifier targeted by the invalidate command is not stored in the LPID/PID filter.

公开(公告)号：US20200110710A1

公开(公告)日：2020-04-09

申请号：US16152241

申请日：2018-10-04

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Jake Truelove ,  Ronald Kalla ,  Jody Joyner ,  Benjamin HERRENSCHMIDT ,  David A. Larson Stanton

IPC分类号： G06F12/1045 ,  G06F9/455

摘要： An apparatus for bypassing an invalidate search of a lookaside buffer includes a filter circuit that directs an invalidate command to a LPID/PID filter of an MMU of a processor and searches for an identifier targeted by the invalidate command. The MMU is external to cores of the processor. The apparatus includes an LPID/PID miss circuit that bypasses searching the lookaside buffer for addresses targeted by the invalidate command and returns a notification that the invalidate command did not identify the identifier targeted by the invalidate command in response to the filter circuit determining that the identifier targeted by the invalidate command is not stored in the LPID/PID filter.