parisc: 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.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
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>
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 8014727..c365469 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -103,6 +103,11 @@
depends on BROKEN
default y
+config PGTABLE_LEVELS
+ int
+ default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
+ default 2
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
