[uml-devel] [PATCH] uml: Always use 3_LEVEL_PGTABLES on x86_64

[uml-devel] [PATCH] uml: Always use 3_LEVEL_PGTABLES on x86_64

[Tristan Schmelcher]

From: Tristan Schmelcher <tschmelcher@google.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@google.com>
---

I'm not clear on the patch procedure for UML. Assuming you guys like
this, do I send it directly to Linus?

--- 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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