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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2016-02-12 22:02:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-18 19:46:30 +0100 |
| commit | 284244a9876225eb73102aff41d4492f65cb2868 (patch) | |
| tree | 43a2da7775d692b3e23ea8bb41a02507cd129239 /arch/x86/Kconfig | |
| parent | x86/mm/pkeys: Dump pkey from VMA in /proc/pid/smaps (diff) | |
| download | linux-284244a9876225eb73102aff41d4492f65cb2868.tar.xz linux-284244a9876225eb73102aff41d4492f65cb2868.zip | |
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@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20160212210228.7E79386C@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fb2ebeb9a692..b8754348de4d 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" |