arm64: expose number of page table levels on Kconfig level

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

ARM64_PGTABLE_LEVELS is renamed to PGTABLE_LEVELS and defined before
sourcing init/Kconfig: arch/Kconfig will define default value and it's
sourced from init/Kconfig.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
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>

1 files changed, 7 insertions, 7 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1b8e97331ffb..3f2fba996bc2 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -143,6 +143,13 @@ config KERNEL_MODE_NEON
 config FIX_EARLYCON_MEM
         def_bool y
 
+config PGTABLE_LEVELS
+        int
+        default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
+        default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
+        default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
+        default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
@@ -413,13 +420,6 @@ config ARM64_VA_BITS
         default 42 if ARM64_VA_BITS_42
         default 48 if ARM64_VA_BITS_48
 
-config ARM64_PGTABLE_LEVELS
-        int
-        default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
-        default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
-        default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
-        default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
-
 config CPU_BIG_ENDIAN
        bool "Build big-endian kernel"
        help