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The Linux kernel configuration item CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
:
CONFIG_X86_64 && ( CONFIG_CPU_SUP_INTEL || CONFIG_CPU_SUP_AMD )
Memory Protection Keys provides a mechanism for enforcing page-based protections, but without requiring modification of the page tables when an application changes protection domains.
For details, see Documentation/core-api/protection-keys.rst
If unsure, say y.
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