From: Mel Gorman <mel@csn.ul.ie>
Date: Wed, 30 Jan 2008 12:33:25 +0000 (+0100)
Subject: x86: relax restrictions on setting CONFIG_NUMA on x86, #2
X-Git-Tag: MMI-PSA29.97-13-9~37629^2~204
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=409a7b859ddb6e0a615d9f3ccddedaec218c56b6;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

x86: relax restrictions on setting CONFIG_NUMA on x86, #2

The FLATMEM memory model references a global mem_map and max_mapnr. This
is incompatible with how memory models used for NUMA view the world.
Builds fail if FLATMEM && NUMA are set on x86. This patch forbids that
combination of config items. This is consistent with x86_64
enforcements.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index dc80a9f1f303..2114b4c71fa0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -871,7 +871,7 @@ config HAVE_ARCH_ALLOC_REMAP
 
 config ARCH_FLATMEM_ENABLE
 	def_bool y
-	depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC
+	depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC && !NUMA
 
 config ARCH_DISCONTIGMEM_ENABLE
 	def_bool y