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SubjectRe: [PATCH 23/34] x86, pkeys: add Kconfig prompt to existing config option
On Thu, 3 Dec 2015, Dave Hansen wrote:
> 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.

The tiny kernel folks are happy about every few kB which are NOT
added by default.

>
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

> ---
>
> 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 2015-12-03 16:21:28.726811905 -0800
> +++ b/arch/x86/Kconfig 2015-12-03 16:21:28.730812086 -0800
> @@ -1682,8 +1682,18 @@ 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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