发明授权
US09135038B1 Mapping free memory pages maintained by a guest operating system to a shared zero page within a machine frame
有权
将由客户机操作系统维护的可用内存页面映射到机器框架内的共享零页面
- 专利标题： Mapping free memory pages maintained by a guest operating system to a shared zero page within a machine frame
- 专利标题（中）： 将由客户机操作系统维护的可用内存页面映射到机器框架内的共享零页面
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申请号： US13468742申请日： 2012-05-10
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公开(公告)号： US09135038B1公开(公告)日： 2015-09-15
- 发明人: Krzysztof Uchronski , Martin O'Brien , Jacob Gorm Hansen , Kiran Bondalapati , Ian Pratt , Gaurav Banga , Vikram Kapoor
- 申请人： Krzysztof Uchronski , Martin O'Brien , Jacob Gorm Hansen , Kiran Bondalapati , Ian Pratt , Gaurav Banga , Vikram Kapoor
- 申请人地址： US CA Cupertino
- 专利权人： Bromium, Inc.
- 当前专利权人： Bromium, Inc.
- 当前专利权人地址： US CA Cupertino
- 代理机构： Brokaw Patent Law PC
- 代理商 Christopher J. Brokaw
- 主分类号： G06F9/455
- IPC分类号： G06F9/455
摘要：
Reducing an amount of memory used by a virtual machine. A system includes multiple virtual machines that share common pages of memory. The number of private pages associated with each virtual machine is minimized by ensuring that pages that a guest operating system regards as now free or zeroed are efficiently mapped by the hypervisor to a shared zero page. Upon a hypervisor determining that one or more guest physical frame numbers are assigned to free memory pages, the hypervisor updates mapping data to map the one or more guest physical frame numbers to a shared zero page within the machine frame.
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