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MISSING: Instruction-Execution-Protection Facility #41

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Fish-Git opened this issue Nov 28, 2017 · 1 comment
Closed

MISSING: Instruction-Execution-Protection Facility #41

Fish-Git opened this issue Nov 28, 2017 · 1 comment
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(*MOVED*) (the original issue was moved into a different issue)

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Fish-Git commented Nov 28, 2017 •
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Instruction-Execution-Protection Facility   (September, 2017)

The instruction-execution-protection facility may be available on a model implementing z/Architecture. When the facility is installed and enabled, and an instruction is fetched from the primary or home address space, an instruction-execution-protection control in the leaf DAT-table entry used in the translation determines whether instructions may or may not be executed from the frame mapped by the entry.

The facility may be used by a control program to better segregate instructions from data. Improved system reliability and integrity may be realized by preventing the execution of instructions from storage locations intended to contain only data. For example, erroneously or maliciously modified data in a program stack can be prevented from being executed.
@Fish-Git Fish-Git added the Missing Support for the described architectural feature is currently missing and needs to be added. label Nov 29, 2017
@Fish-Git Fish-Git added (*MOVED*) (the original issue was moved into a different issue) and removed Missing Support for the described architectural feature is currently missing and needs to be added. labels Dec 18, 2017
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Moved to combined issue #77 "MISSING Facilities support".

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