Invention Grant
US07844845B2 System and method for preventing user O.S. in VMM system from deenergizing device being used by service O.S.
有权
用于防止用户的系统和方法 在服务O.S.使用的断电装置的VMM系统中
- Patent Title: System and method for preventing user O.S. in VMM system from deenergizing device being used by service O.S.
- Patent Title (中): 用于防止用户的系统和方法 在服务O.S.使用的断电装置的VMM系统中
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Application No.: US11949983Application Date: 2007-12-04
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Publication No.: US07844845B2Publication Date: 2010-11-30
- Inventor: Liang Chen , Mark Charles Davis , Seiichi Kawano , Rod David Waltermann
- Applicant: Liang Chen , Mark Charles Davis , Seiichi Kawano , Rod David Waltermann
- Applicant Address: SG
- Assignee: Lenovo (Singapore) Pte. Ltd.
- Current Assignee: Lenovo (Singapore) Pte. Ltd.
- Current Assignee Address: SG
- Agent John L. Rogitz
- Main IPC: G06F1/32
- IPC: G06F1/32
Abstract:
A call from a user operating system (UOS) to BIOS to configure a connected device into a reduced energy consumption mode is routed through a virtual machine monitor (VMM). The VMM determines whether a service O.S. (SOS) is in need of the device and if so the VMM informs the UOS that the device has been configured as ordered, while allowing the SOS to complete its task with the device. If the SOS is not in need of the device, or at the completion of the SOS task with the device, the VMM passes the call to ACPI/BIOS to configure the device in the demanded energy consumption mode.
Public/Granted literature
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