linux-kernel - [PATCH] uml: Always use 3_LEVEL_PGTABLES on x86

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Message-ID: <CADNZ+wS1yU886b_LosvHnknKZahbn=CSEZoPBUtqtc9odyz6RA@mail.gmail.com>
Date:	Wed, 30 Jan 2013 14:57:53 -0800
From:	Tristan Schmelcher <tschmelcher@...gle.com>
To:	Richard Weinberger <richard@....at>
Cc:	user-mode-linux-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] uml: Always use 3_LEVEL_PGTABLES on x86_64

From: Tristan Schmelcher <tschmelcher@...gle.com>

Use 3_LEVEL_PGTABLES on x86_64 even if EXPERIMENTAL is off, since
otherwise UML does not work. Applies to 3.7.1.

Signed-off-by: Tristan Schmelcher <tschmelcher@...gle.com>
---

--- linux-3.7.1/arch/x86/um/Kconfig.orig        2013-01-23
15:50:12.671408478 -0800
+++ linux-3.7.1/arch/x86/um/Kconfig     2013-01-23 15:44:38.321878377 -0800
@@ -39,7 +39,7 @@ config RWSEM_GENERIC_SPINLOCK
 config 3_LEVEL_PGTABLES
        bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
        default 64BIT
-       depends on EXPERIMENTAL
+       depends on EXPERIMENTAL || 64BIT
        help
        Three-level pagetables will let UML have more than 4G of physical
        memory.  All the memory that can't be mapped directly will be treated
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