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arm: expose number of page table levels on Kconfig level

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We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kirill A. Shutemov 2015-04-14 15:45:42 -07:00 committed by Linus Torvalds
parent 9f25e6ad58
commit 1bcad26e9d
1 changed files with 5 additions and 0 deletions
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arch/arm/Kconfig
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@ -286,6 +286,11 @@ config GENERIC_BUG
def_bool y
depends on BUG
config PGTABLE_LEVELS
int
default 3 if ARM_LPAE
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"