diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fb2ebeb9a6925ff5a2bf0e2395602f0ff0f8dc35..b8754348de4dbe1e8c9ce957ba557ff6ac9690a1 100644
--- 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"