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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2016-02-12 22:02:00 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-16 10:11:13 +0100 |
| commit | 35e97790f5f1e5cf2b5522c55e3e31d5c81bd226 (patch) | |
| tree | b2c66961e9306ce5ec99ecbcdaa8cc40d4954c27 /arch/x86 | |
| parent | x86/fpu: Add placeholder for 'Processor Trace' XSAVE state (diff) | |
| download | linux-35e97790f5f1e5cf2b5522c55e3e31d5c81bd226.tar.xz linux-35e97790f5f1e5cf2b5522c55e3e31d5c81bd226.zip | |
x86/mm/pkeys: Add Kconfig option
I don't have a strong opinion on whether we need a Kconfig prompt
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.
Note that, with disabled-features.h, the checks in the code
for protection keys are always the same:
cpu_has(c, X86_FEATURE_PKU)
With the config option disabled, this essentially turns into an
We will hide the prompt for now.
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/20160212210200.DB7055E8@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index ab2ed5328f0a..3632cdd03201 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1714,6 +1714,10 @@ config X86_INTEL_MPX If unsure, say N. +config X86_INTEL_MEMORY_PROTECTION_KEYS + def_bool y + depends on CPU_SUP_INTEL && X86_64 + config EFI bool "EFI runtime service support" depends on ACPI |