Invention Grant
US07689733B2 Method and apparatus for policy-based direct memory access control
有权
用于基于策略的直接存储器访问控制的方法和装置
- Patent Title: Method and apparatus for policy-based direct memory access control
- Patent Title (中): 用于基于策略的直接存储器访问控制的方法和装置
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Application No.: US11684307Application Date: 2007-03-09
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Publication No.: US07689733B2Publication Date: 2010-03-30
- Inventor: Todd L. Carpenter , William J. Westerinen
- Applicant: Todd L. Carpenter , William J. Westerinen
- Applicant Address: US WA Redmond
- Assignee: Microsoft Corporation
- Current Assignee: Microsoft Corporation
- Current Assignee Address: US WA Redmond
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: G06F13/28
- IPC: G06F13/28 ; G06F15/167
Abstract:
A computer that operates in a metered mode for normal use and a restricted mode uses an input/output memory management unit (I/O MMU) in conjunction with a security policy to determine which peripheral devices are allowed direct memory access during the restricted mode of operation. During restricted mode operation, non-authorized peripheral devices are removed from virtual address page tables or given vectors to non-functioning memory areas.
Public/Granted literature
- US20080222663A1 Policy-Based Direct Memory Access Control Public/Granted day:2008-09-11
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