发明授权
- 专利标题： Virtualized instruction extensions for system partitioning
- 专利标题（中）： 用于系统分区的虚拟化指令扩展
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申请号： US13460287申请日： 2012-04-30
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公开(公告)号： US09229884B2公开(公告)日： 2016-01-05
- 发明人: Bryan D. Marietta , Gary L. Whisenhunt , Kumar K. Gala , David B. Kramer
- 申请人： Bryan D. Marietta , Gary L. Whisenhunt , Kumar K. Gala , David B. Kramer
- 申请人地址： US TX Austin
- 专利权人： Freescale Semiconductor, Inc.
- 当前专利权人： Freescale Semiconductor, Inc.
- 当前专利权人地址： US TX Austin
- 代理机构： Terrile, Cannatti, Chambers & Holland, LLP
- 代理商 Michael Rocco Cannatti
- 主分类号： G06F13/24
- IPC分类号： G06F13/24 ; G06F13/14
摘要：
A method and circuit for a data processing system provide virtualized instructions for accessing a partitioned device (e.g., 14, 61) by executing a control instruction (47, 48) to encode and store an access command (CMD) in a data payload with a hardware-inserted partition attribute (LPID) for storage to a command register (25) at a physical address (PA) retrieved from a special purpose register (46) so that the partitioned device (14, 61) can determine if the access command can be performed based on local access control information.