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Message-ID: <55704B0C.1000308@huawei.com>
Date:	Thu, 4 Jun 2015 20:56:44 +0800
From:	Xishi Qiu <qiuxishi@...wei.com>
To:	Xishi Qiu <qiuxishi@...wei.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	<nao.horiguchi@...il.com>, Yinghai Lu <yinghai@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, <mingo@...e.hu>,
	Xiexiuqi <xiexiuqi@...wei.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	"Luck, Tony" <tony.luck@...el.com>
CC:	Linux MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 01/12] mm: add a new config to manage the code

This patch introduces a new config called "CONFIG_ACPI_MIRROR_MEMORY", it is
used to on/off the feature.

Signed-off-by: Xishi Qiu <qiuxishi@...wei.com>
---
 mm/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index 390214d..4f2a726 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -200,6 +200,14 @@ config MEMORY_HOTREMOVE
 	depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
 	depends on MIGRATION
 
+config MEMORY_MIRROR
+	bool "Address range mirroring support"
+	depends on X86 && NUMA
+	default y
+	help
+	  This feature depends on hardware and firmware support.
+	  ACPI or EFI records the mirror info.
+
 #
 # If we have space for more page flags then we can enable additional
 # optimizations and functionality.
-- 
2.0.0


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