Messages in this thread Patch in this message | | | Subject | [PATCH 18/26] x86, pkeys: add Kconfig prompt to existing config option | From | Dave Hansen <> | Date | Wed, 16 Sep 2015 10:49:09 -0700 |
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I don't have a strong opinion on whether we need this or not. Protection Keys has relatively little code associated with it, and it is not a heavyweight feature to keep enabled. However, I can imagine that folks would still appreciate being able to disable it.
Here's the option if folks want it.
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b/arch/x86/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff -puN arch/x86/Kconfig~pkeys-40-kconfig-prompt arch/x86/Kconfig --- a/arch/x86/Kconfig~pkeys-40-kconfig-prompt 2015-09-16 10:48:19.287329737 -0700 +++ b/arch/x86/Kconfig 2015-09-16 10:48:19.291329919 -0700 @@ -1696,8 +1696,18 @@ 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" _
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