um: expose number of page table levels

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]> Acked-by: Richard Weinberger <[email protected]> Cc: Jeff Dike <[email protected]> Tested-by: Guenter Roeck <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Apr 14, 2015 · 6b8ce2a · 6b8ce2a
1 parent 909d45e
commit 6b8ce2a
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
@@ -155,3 +155,8 @@ config MMAPPER
 
 config NO_DMA
 	def_bool y
+
+config PGTABLE_LEVELS
+	int
+	default 3 if 3_LEVEL_PGTABLES
+	default 2