Invention Grant
- Patent Title: Out-of-order processor that avoids deadlock in processing queues by designating a most favored instruction
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Application No.: US15693387Application Date: 2017-08-31
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Publication No.: US10169046B2Publication Date: 2019-01-01
- Inventor: Maarten J. Boersma , Robert A. Cordes , David A. Hrusecky , Jennifer L. Molnar , Brian W. Thompto , Albert J. Van Norstrand, Jr. , Kenneth L. Ward
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Martin & Associates, LLC
- Agent Derek P. Martin
- Main IPC: G06F9/38
- IPC: G06F9/38 ; G06F9/30 ; G06F9/52 ; G06F12/0875
Abstract:
An instruction sequencing unit in an out-of-order (OOO) processor includes a Most Favored Instruction (MFI) mechanism that designates an instruction as an MFI. The processing queues in the processor identify when they contain the MFI, and assures processing the MFI. The MFI remains the MFI until it is completed or is flushed, and which time the MFI mechanism selects the next MFI.
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