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DateMon, 26 Jun 2006 16:39:59 +0900
FromYasunori Goto <>
SubjectRe: linux-2.6.17.1: undefined reference to `online_page'
> In-Reply-To: <200606231001.33766.toralf.foerster@gmx.de>
> 
> On Fri, 23 Jun 2006 10:01:33 +0200, Toralf Foerster wrote:
> 
> > I got the compile error :> > > > ...> >   UPD     include/linux/compile.h
> >   CC      init/version.o
> >   LD      init/built-in.o
> >   LD      .tmp_vmlinux1
> > mm/built-in.o: In function `online_pages':
> > : undefined reference to `online_page'
> > make: *** [.tmp_vmlinux1] Error 1
> > 
> > with this config:
> 
> > CONFIG_X86_32=y
> 
> > CONFIG_NOHIGHMEM=y
> 
> > CONFIG_SPARSEMEM_MANUAL=y> > CONFIG_SPARSEMEM=y> > CONFIG_HAVE_MEMORY_PRESENT=y> > CONFIG_SPARSEMEM_STATIC=y> > CONFIG_MEMORY_HOTPLUG=y
> 
> Yes, that config is broken. mm/memory_hotplug.c::online_pages() calls
> online_page() but without HIGHMEM that doesn't get built and no dummy
> function gets defined.
Toralf-san. How is this patch?
Or do you want to use memory hotplug without highmem?

Bye.

---
add_memory() for i386 add memory to highmem. So, if CONFIG_HIGHMEM
is not set, CONFIG_MEMORY_HOTPLUG shouldn't be set.


Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>

---
 mm/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.17/mm/Kconfig
===================================================================
--- linux-2.6.17.orig/mm/Kconfig	2006-06-26 14:19:11.000000000 +0900
+++ linux-2.6.17/mm/Kconfig	2006-06-26 14:19:53.000000000 +0900
@@ -115,7 +115,7 @@ config SPARSEMEM_EXTREME
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
 	bool "Allow for memory hot-add"
-	depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND
+	depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND && !(X86_32 && !HIGHMEM)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
 	depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND
-- 
Yasunori Goto 


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