Invention Grant
US08032680B2 Lazy handling of end of interrupt messages in a virtualized environment
有权
在虚拟环境中懒惰处理中断消息的结束
- Patent Title: Lazy handling of end of interrupt messages in a virtualized environment
- Patent Title (中): 在虚拟环境中懒惰处理中断消息的结束
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Application No.: US12163891Application Date: 2008-06-27
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Publication No.: US08032680B2Publication Date: 2011-10-04
- Inventor: Shuvabrata Ganguly
- Applicant: Shuvabrata Ganguly
- Applicant Address: US WA Redmond
- Assignee: Microsoft Corporation
- Current Assignee: Microsoft Corporation
- Current Assignee Address: US WA Redmond
- Agency: Lee & Hayes, PLLC
- Main IPC: G06F9/48
- IPC: G06F9/48
Abstract:
Techniques enable reducing a number of intercepts performed by a hypervisor by reducing a number of End Of Interrupt (EOI) messages sent from a virtual central processing unit (CPU) to a virtual advanced programmable interrupt controller (APIC). The EOI path of the guest operating system running on the virtual CPU is altered to leave a marker indicating that the EOI has occurred. At some later time the hypervisor inspects the marker and lazily updates the virtual APIC state.
Public/Granted literature
- US20090328035A1 Lazy Handling of End of Interrupt Messages in a Virtualized Environment Public/Granted day:2009-12-31
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