Invention Grant
US08352670B2 Execute-only memory and mechanism enabling execution from execute-only memory for minivisor
有权
执行专有的存储器和机制，使得能够从小型存储器的只执行存储器执行
- Patent Title: Execute-only memory and mechanism enabling execution from execute-only memory for minivisor
- Patent Title (中): 执行专有的存储器和机制，使得能够从小型存储器的只执行存储器执行
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Application No.: US12272951Application Date: 2008-11-18
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Publication No.: US08352670B2Publication Date: 2013-01-08
- Inventor: Benjamin C. Serebrin
- Applicant: Benjamin C. Serebrin
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Lawrence J. Merkel
- Main IPC: G06F12/14
- IPC: G06F12/14
Abstract:
In one embodiment, a processor comprises an execution core configured to execute instructions; and a register configured to store an execute-only valid indication indicative of whether or not execution of instructions is permitted in pages that are indicated as execute-only in a set of page tables used by the processor for address translation. The execution core is configured, responsive to a fetch within an execute-only page, to signal a fault responsive to the execute-only valid indication indicating that execution is not permitted in the execute-only page, and wherein the execution core is configured to permit the fetch within the execute-only page responsive to the execute-only valid indication indicating that execution is permitted in the execute-only page.
Public/Granted literature
- US20090187697A1 Execute-Only Memory and Mechanism Enabling Execution From Execute-Only Memory for Minivisor Public/Granted day:2009-07-23
Information query
