linux-kernel - [PATCHv3 04/17] arm: expose number of page table levels on Kconfig level

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Message-Id: <1424950520-90188-5-git-send-email-kirill.shutemov@linux.intel.com>
Date:	Thu, 26 Feb 2015 13:35:07 +0200
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Russell King <linux@....linux.org.uk>
Subject: [PATCHv3 04/17] arm: 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@...ux.intel.com>
Cc: Russell King <linux@....linux.org.uk>
Tested-by: Guenter Roeck <linux@...ck-us.net>
---
 arch/arm/Kconfig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9f1f09a2bc9b..16f20b2b37e3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -286,6 +286,11 @@ config GENERIC_BUG
 	def_bool y
 	depends on BUG
 
+config PGTABLE_LEVELS
+	int
+	default 3 if ARM_LPAE
+	default 2
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
-- 
2.1.4

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