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x86/mm: add ARCH_PKEY_BITS to Kconfig

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The new config option specifies how many bits are in each PKEY.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/r/20240822151113.1479789-3-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Joey Gouly 2024-08-22 16:10:45 +01:00 committed by Will Deacon
parent 12930e3a86
commit 5626f8d45e
1 changed files with 4 additions and 0 deletions
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arch/x86/Kconfig
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@ -1889,6 +1889,10 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS
If unsure, say y.
config ARCH_PKEY_BITS
int
default 4
choice
prompt "TSX enable mode"
depends on CPU_SUP_INTEL