From: Dave Hansen <dave.han...@linux.intel.com>
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
#ifdef.
We will hide the prompt for now.
Signed-off-by: Dave Hansen <dave.han...@linux.intel.com>
Reviewed-by: Thomas Gleixner <t...@linutronix.de>
---
b/arch/x86/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff -puN arch/x86/Kconfig~pkeys-01-kconfig arch/x86/Kconfig
--- a/arch/x86/Kconfig~pkeys-01-kconfig 2016-01-28 15:52:17.645279448 -0800
+++ b/arch/x86/Kconfig 2016-01-28 15:52:17.649279631 -0800
@@ -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
_
