Date: Fri, 26 Jul 2013 06:27:14 -0400
From: Tejun Heo <tj@kernel.org>
To: Tang Chen <tangchen@cn.fujitsu.com>
Cc: tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
        akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org,
        jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com,
        isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
        mgorman@suse.de, minchan@kernel.org, mina86@mina86.com,
        gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com,
        lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com,
        prarit@redhat.com, zhangyanfei@cn.fujitsu.com, yanghy@cn.fujitsu.com,
        x86@kernel.org, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        linux-acpi@vger.kernel.org
Subject: Re: [PATCH 14/21] x86, acpi, numa: Reserve hotpluggable memory at
 early time.
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On Fri, Jul 26, 2013 at 06:26:09AM -0400, Tejun Heo wrote:
> > So how about this.
> > 1. Introduce a new global list used to store hotpluggable regions.
> > 2. On acpi side, find and fulfill the list.
> > 3. On memblock side, make the default allocation function stay away from
> >    these regions.
> 
> I was thinking more along the line of
> 
> 1. Mark hotpluggable regions with a flag in memblock.
> 2. On ACPI side, find and mark hotpluggable regions.
> 3. Make memblock avoid giving out hotpluggable regions for normal
>    allocations.

But adding new regions array is more convenient / cleaner, that's fine
too.  Those arrays are dynamically sized anyway.

Thanks.

-- 
tejun
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