Intel processor security feature Supervisor Mode Access Prevention

MrBrian · Nov 5, 2014

From https://forums.grsecurity.net/viewtopic.php?f=7&t=3046:

With the latest release of their Architecture Instruction Set Extensions Programming Reference Intel has finally lifted the veil on a new CPU feature to debut in next year's Haswell line of processors. This new feature is called Supervisor Mode Access Prevention (SMAP) and there's a reason why its name so closely resembles Supervisor Mode Execution Prevention (SMEP), the feature that debuted with Ivy Bridge processors a few months ago. While the purpose of SMEP was to control instruction fetches and code execution from supervisor mode (traditionally used by the kernel component of operating systems), SMAP is concerned with data accesses from supervisor mode.
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Intel processor security feature Supervisor Mode Access Prevention

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Intel processor security feature Supervisor Mode Access Prevention

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