发明申请
US20120180052A1 Application Performance with Support for Re-Initiating Unconfirmed Software-Initiated Threads in Hardware
失效
支持应用程序性能,支持在硬件中重新启动未经确认的软件启动的线程
- 专利标题: Application Performance with Support for Re-Initiating Unconfirmed Software-Initiated Threads in Hardware
- 专利标题(中): 支持应用程序性能,支持在硬件中重新启动未经确认的软件启动的线程
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申请号: US13427045申请日: 2012-03-22
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公开(公告)号: US20120180052A1公开(公告)日: 2012-07-12
- 发明人: Matthew Accapadi , Robert H. Bell, JR. , Hong L. Hua , Ram Raghavan , Mysore S. Srinivas
- 申请人: Matthew Accapadi , Robert H. Bell, JR. , Hong L. Hua , Ram Raghavan , Mysore S. Srinivas
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 主分类号: G06F9/455
- IPC分类号: G06F9/455
摘要:
A method, system and computer-usable medium are disclosed for managing prefetch streams in a virtual machine environment. Compiled application code in a first core, which comprises a Special Purpose Register (SPR) and a plurality of first prefetch engines, initiates a prefetch stream request. If the prefetch stream request cannot be initiated due to unavailability of a first prefetch engine, then an indicator bit indicating a Prefetch Stream Dispatch Fault is set in the SPR, causing a Hypervisor to interrupt the execution of the prefetch stream request. The Hypervisor then calls its associated operating system (OS), which determines prefetch engine availability for a second core comprising a plurality of second prefetch engines. If a second prefetch engine is available, then the OS migrates the prefetch stream request from the first core to the second core, where it is initiated on an available second prefetch engine.