Commit-ID: 284244a9876225eb73102aff41d4492f65cb2868 Gitweb: http://git.kernel.org/tip/284244a9876225eb73102aff41d4492f65cb2868 Author: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> AuthorDate: Fri, 12 Feb 2016 13:02:28 -0800 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Thu, 18 Feb 2016 19:46:30 +0100 x86/mm/pkeys: Add Kconfig prompt to existing config option 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. Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Brian Gerst <brgerst@xxxxxxxxx> Cc: Dave Hansen <dave@xxxxxxxx> Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx> Cc: H. Peter Anvin <hpa@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: linux-mm@xxxxxxxxx Link: http://lkml.kernel.org/r/20160212210228.7E79386C@xxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- arch/x86/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fb2ebeb..b875434 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" -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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