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Method and system for preventing current-privilege-level-information leaks to non-privileged code
Method and system for preventing current-privilege-level-information leaks to non-privileged code
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机译：防止当前特权级信息泄漏到非特权代码的方法和系统
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摘要
Various embodiments of the present invention introduce privilege-level mapping into a computer architecture not initially designed for supporting virtualization. Privilege-level mapping can, with relatively minor changes to processor logic, fully prevent privileged-level-information leaks by which non-privilege code can determine the current machine-level privilege level at which they are executing. In one embodiment of the present invention, a new privilege-level mapping register is introduced, and privilege-level mapping is enabled for all but code invoked by privileged-level-0-forcing hardware events.
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