发明授权
- 专利标题： Transparent memory-mapped emulation of I/O calls
- 专利标题（中）： I / O调用的透明内存映射仿真
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申请号： US12261722申请日： 2008-10-30
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公开(公告)号： US08819676B2公开(公告)日： 2014-08-26
- 发明人: Daniel R. K. Ports , Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel
- 申请人： Daniel R. K. Ports , Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel
- 申请人地址： US CA Palo Alto
- 专利权人： VMware, Inc.
- 当前专利权人： VMware, Inc.
- 当前专利权人地址： US CA Palo Alto
- 主分类号： G06F9/455
- IPC分类号： G06F9/455
摘要：
A virtual-machine-based system provides a mechanism to implement application file I/O operations of protected data by implementing the I/O operations semantics in a shim layer with memory-mapped regions. The semantics of these I/O operations are emulated in a shim layer with memory-mapped regions by using a mapping between a process' address space and a file or shared memory object. Data that is protected from viewing by a guest OS running in a virtual machine may nonetheless be accessed by the process.
公开/授权文献
- US20090113425A1 Transparent Memory-Mapped Emulation of I/O Calls 公开/授权日：2009-04-30
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