From: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date: Tue, 14 Apr 2015 22:46:08 +0000 (-0700)
Subject: tile: expose number of page table levels
X-Git-Tag: firefly_0821_release~176^2~1984^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=909d45e62801ea77422d478519baa7d2287c77f7;p=firefly-linux-kernel-4.4.55.git

tile: 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 <kirill.shutemov@linux.intel.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.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>
---

diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 7cca41842a9e..0142d578b5a8 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -147,6 +147,11 @@ config ARCH_DEFCONFIG
 	default "arch/tile/configs/tilepro_defconfig" if !TILEGX
 	default "arch/tile/configs/tilegx_defconfig" if TILEGX
 
+config PGTABLE_LEVELS
+	int
+	default 3 if 64BIT
+	default 2
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"