linux-kernel - Re: [PATCH] Cleanup to make remove

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Message-Id: <20080908181454.4aec7d49.randy.dunlap@oracle.com>
Date:	Mon, 8 Sep 2008 18:14:54 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Badari Pulavarty <pbadari@...ibm.com>, garyhade@...ibm.com,
	linux-mm@...ck.org, y-goto@...fujitsu.com, mel@....ul.ie,
	lcm@...ibm.com, linux-kernel@...r.kernel.org, x86@...nel.org,
	mingo@...e.hu
Subject: Re: [PATCH] Cleanup to make  remove_memory() arch neutral

On Mon, 8 Sep 2008 17:56:21 -0700 Andrew Morton wrote:

> On Mon, 08 Sep 2008 14:52:34 -0700
> Badari Pulavarty <pbadari@...ibm.com> wrote:
> 
> > There is nothing architecture specific about remove_memory().
> > remove_memory() function is common for all architectures which
> > support hotplug memory remove. Instead of duplicating it in every
> > architecture, collapse them into arch neutral function.
> > 
> > Signed-off-by: Badari Pulavarty <pbadari@...ibm.com>
> > 
> >  arch/ia64/mm/init.c   |   17 -----------------
> >  arch/powerpc/mm/mem.c |   17 -----------------
> >  arch/s390/mm/init.c   |   11 -----------
> >  mm/memory_hotplug.c   |   10 ++++++++++
> >  4 files changed, 10 insertions(+), 45 deletions(-)
> 
> I spent some time trying to build-test this on ia64 and gave up.  How
> the heck do you turn on memory hotplug on ia64?

After using ia64 defconfig, all I had to do was enable Sparse Memory model
instead of Discontiguous.


---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/
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