x86/mm/pkeys: Add Kconfig prompt to existing config option

[cascardo/linux.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fb2ebeb..b875434 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1716,8 +1716,18 @@ config X86_INTEL_MPX
          If unsure, say N.
 
 config X86_INTEL_MEMORY_PROTECTION_KEYS
+       prompt "Intel Memory Protection Keys"
        def_bool y
+       # Note: only available in 64-bit mode
        depends on CPU_SUP_INTEL && X86_64
+       ---help---
+         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/x86/protection-keys.txt
+
+         If unsure, say y.
 
 config EFI
        bool "EFI runtime service support"