Invention Grant
US09535846B2 Using a decrementer interrupt to start long-running hardware operations before the end of a shared processor dispatch cycle
有权
在共享处理器调度周期结束之前,使用递减器中断启动长时间运行的硬件操作
- Patent Title: Using a decrementer interrupt to start long-running hardware operations before the end of a shared processor dispatch cycle
- Patent Title (中): 在共享处理器调度周期结束之前,使用递减器中断启动长时间运行的硬件操作
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Application No.: US14444456Application Date: 2014-07-28
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Publication No.: US09535846B2Publication Date: 2017-01-03
- Inventor: Stuart Z. Jacobs , David A. Larson , Michael J. Vance
- 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: Patterson + Sheridan, LLP
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/455 ; G06F12/0875 ; G06F13/24 ; G06F12/08

Abstract:
Systems, methods, and computer program products to perform an operation, the operation comprising processing a first logical partition on a shared processor for the duration of a dispatch cycle, issuing, by a hypervisor, at a predefined time prior to completion of the dispatch cycle, a lightweight hypervisor decrementer (HDEC) interrupt specifying a cache line address buffer location in a virtual processor, and responsive to the lightweight HDEC, writing, by the shared processor, a set of cache line addresses used by the first logical partition to the cache line address buffer location in the virtual processor.
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