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.shute...@linux.intel.com>
Cc: "David S. Miller" <da...@davemloft.net>
Tested-by: Guenter Roeck <li...@roeck-us.net>
---
arch/sparc/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 96ac69c5eba0..cb06f5433e12 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -143,6 +143,10 @@ config GENERIC_ISA_DMA
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
def_bool y if SPARC64
+config PGTABLE_LEVELS
+ default 4 if 64BIT
+ default 3
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
--
2.1.4
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