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 <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Matt Turner <[email protected]>
---
 arch/alpha/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index b7ff9a318c31..bf9e9d3b3792 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -76,6 +76,10 @@ config GENERIC_ISA_DMA
        bool
        default y
 
+config PGTABLE_LEVELS
+       int
+       default 3
+
 source "init/Kconfig"
 source "kernel/Kconfig.freezer"
 
-- 
2.1.4

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