Date: Fri, 14 Mar 2008 11:36:46 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: "Yinghai Lu" <yhlu.kernel@gmail.com>
Cc: "Andrew Morton" <akpm@linux-foundation.org>, "Ingo Molnar" <mingo@elte.hu>,
       "Andi Kleen" <ak@suse.de>, "Christoph Lameter" <clameter@sgi.com>,
       linux-kernel@vger.kernel.org, "Yasunori Goto" <y-goto@jp.fujitsu.com>
Subject: Re: [PATCH] mm: make reserve_bootmem can crossed the nodes
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On Thu, 13 Mar 2008 19:00:33 -0700
"Yinghai Lu" <yhlu.kernel@gmail.com> wrote:
> >  Hmm, can a call to reserve_bootmem() return a memory region which spread across
> >  prural nodes ?
> 
> Yes. there is one reserve_bootmem in reserve_crashkernel. and position
> is passed via commandline...
> there is some chance for ramdisk too. it is called via reserve_bootmem_generic.
> 
Hmm, ok. I finally see your point. 

please allow me to make clarification

Background:
- reserve_bootmem is called for *reserve* memory before bootmem allocator.
- It specifies <address, size>.
- Because <addrees, size> are argments, memory hole in <address, size> is not
  problem here.

Before change,
- reseve_bootmem() only works for Node(0)

After change
- reserve_bootmem() works on sutiable nodes for <address, size>
- It can spread accross among prural nodes.

thank you for your work.

Regards,
-Kame

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