linux-kernel - Re: 2.6.23-rc8-mm1 - powerpc memory hotplug link failure

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Message-Id: <20070926104854.7cc09d13.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 26 Sep 2007 10:48:54 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andy Whitcroft <apw@...dowen.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Badari Pulavarty <pbadari@...il.com>
Subject: Re: 2.6.23-rc8-mm1 - powerpc memory hotplug link failure

On Wed, 26 Sep 2007 10:32:05 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
> Maybe my patch is the problem. could you give me your .config ?
> 
Ah, memory hot remove is selectable even if the arch doesn't support it....sorry.

ok, this is fix.

Thanks,
-Kame
==
MEMORY_HOTREMOVE config option is selectable even it arch doesn't support it.
This fix it.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


Index: linux-2.6.23-rc8-mm1/arch/ia64/Kconfig
===================================================================
--- linux-2.6.23-rc8-mm1.orig/arch/ia64/Kconfig
+++ linux-2.6.23-rc8-mm1/arch/ia64/Kconfig
@@ -305,6 +305,9 @@ config HOTPLUG_CPU
 config ARCH_ENABLE_MEMORY_HOTPLUG
 	def_bool y
 
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+	def_bool y
+
 config SCHED_SMT
 	bool "SMT scheduler support"
 	depends on SMP
Index: linux-2.6.23-rc8-mm1/mm/Kconfig
===================================================================
--- linux-2.6.23-rc8-mm1.orig/mm/Kconfig
+++ linux-2.6.23-rc8-mm1/mm/Kconfig
@@ -141,7 +141,7 @@ config MEMORY_HOTPLUG_SPARSE
 
 config MEMORY_HOTREMOVE
 	bool "Allow for memory hot remove"
-	depends on MEMORY_HOTPLUG
+	depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
 	depends on MIGRATION
 
 # Heavily threaded applications may benefit from splitting the mm-wide

-
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