linux-kernel - Re: [PATCH 00/10] mm: Linux VM Infrastructure to support Memory Power Management

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Message-ID: <20110610172307.GA27630@srcf.ucam.org>
Date:	Fri, 10 Jun 2011 18:23:07 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Kyungmin Park <kmpark@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ankita Garg <ankita@...ibm.com>,
	linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	svaidy@...ux.vnet.ibm.com, thomas.abraham@...aro.org
Subject: Re: [PATCH 00/10] mm: Linux VM Infrastructure to support Memory
 Power Management

On Fri, Jun 10, 2011 at 10:19:39AM -0700, Paul E. McKenney wrote:
> On Fri, Jun 10, 2011 at 06:05:35PM +0100, Matthew Garrett wrote:
> > I mean at the hardware level. As far as I know, the best we can do at 
> > the moment is to put an entire node into self refresh when the CPU hits 
> > package C6.
> 
> But this depends on the type of system and CPU family, right?  If you
> can say, which hardware are you thinking of?  (I am thinking of ARM.)

I haven't seen too many ARM servers with 256GB of RAM :) I'm mostly 
looking at this from an x86 perspective.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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