Invention Grant
US08621149B2 Controlling access to a cache memory using privilege level information
有权
使用特权级别信息控制对高速缓存的访问
- Patent Title: Controlling access to a cache memory using privilege level information
- Patent Title (中): 使用特权级别信息控制对高速缓存的访问
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Application No.: US12645788Application Date: 2009-12-23
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Publication No.: US08621149B2Publication Date: 2013-12-31
- Inventor: Zhen Fang , Li Zhao , Ravishankar Iyer , Tong Li , Donald K. Newell
- Applicant: Zhen Fang , Li Zhao , Ravishankar Iyer , Tong Li , Donald K. Newell
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Trop, Pruner & Hu, P.C.
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28 ; G06F9/26 ; G06F9/34
Abstract:
In one embodiment, a cache memory includes entries each to store a ring level identifier, which may indicate a privilege level of information stored in the entry. This identifier may be used in performing read accesses to the cache memory. As an example, a logic coupled to the cache memory may filter an access to one or more ways of a selected set of the cache memory based at least in part on a current privilege level of a processor and the ring level identifier of the one or more ways. Other embodiments are described and claimed.
Public/Granted literature
- US20110153926A1 Controlling Access To A Cache Memory Using Privilege Level Information Public/Granted day:2011-06-23
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