Invention Grant
- Patent Title: Transparent memory-mapped emulation of I/O calls
- Patent Title (中): I / O调用的透明内存映射仿真
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Application No.: US12261722Application Date: 2008-10-30
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Publication No.: US08819676B2Publication Date: 2014-08-26
- Inventor: Daniel R. K. Ports , Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel
- Applicant: Daniel R. K. Ports , Xiaoxin Chen , Carl A. Waldspurger , Pratap Subrahmanyam , Tal Garfinkel
- Applicant Address: US CA Palo Alto
- Assignee: VMware, Inc.
- Current Assignee: VMware, Inc.
- Current Assignee Address: US CA Palo Alto
- Main IPC: G06F9/455
- IPC: G06F9/455
Abstract:
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.
Public/Granted literature
- US20090113425A1 Transparent Memory-Mapped Emulation of I/O Calls Public/Granted day:2009-04-30
Information query
