From: David Rientjes <rientjes@google.com>
To: Shaohui Zheng <shaohui.zheng@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
haicheng.li@linux.intel.com, lethal@linux-sh.org,
Andi Kleen <ak@linux.intel.com>,
Greg Kroah-Hartman <gregkh@suse.de>
Subject: Re: [7/7,v8] NUMA Hotplug Emulator: Implement per-node add_memory debugfs interface
Date: Fri, 10 Dec 2010 15:30:38 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1012101529190.30039@chino.kir.corp.google.com> (raw)
In-Reply-To: <20101209235705.GA10674@shaohui>
On Fri, 10 Dec 2010, Shaohui Zheng wrote:
> > That doesn't address the question. My question is whether or not adding
> > memory to a memoryless node in this way transitions its state to
> > N_HIGH_MEMORY in the VM?
> I guess that you are talking about memory hotplug on x86_32, memory hotplug is
> NOT supported well for x86_32, and the function add_memory does not consider
> this situlation.
>
> For 64bit, N_HIGH_MEMORY == N_NORMAL_MEMORY, so we need not to do the transition.
>
One more time :) Memoryless nodes do not have their bit set in
N_HIGH_MEMORY. When memory is added to a memoryless node with this new
interface, does the bit get set?
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next prev parent reply other threads:[~2010-12-10 23:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <A24AE1FFE7AEC5489F83450EE98351BF2A40FED20A@shsmsx502.ccr.corp.intel.com>
2010-12-09 1:21 ` Shaohui Zheng
2010-12-09 21:29 ` David Rientjes
2010-12-09 23:57 ` Shaohui Zheng
2010-12-10 23:30 ` David Rientjes [this message]
2010-12-13 2:09 ` Shaohui Zheng
2010-12-13 20:56 ` David Rientjes
2010-12-07 1:00 [0/7,v8] NUMA Hotplug Emulator (v8) shaohui.zheng
2010-12-07 1:00 ` [7/7,v8] NUMA Hotplug Emulator: Implement per-node add_memory debugfs interface shaohui.zheng
2010-12-08 21:31 ` David Rientjes
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