From: Ingo Molnar <mingo@elte.hu>
To: Dave Hansen <haveblue@us.ibm.com>
Cc: Linus Torvalds <torvalds@osdl.org>,
Kyle Moffett <mrmacman_g4@mac.com>, Paul Jackson <pj@sgi.com>,
andy@thermo.lanl.gov, mbligh@mbligh.org,
Andrew Morton <akpm@osdl.org>,
arjan@infradead.org, arjanv@infradead.org, kravetz@us.ibm.com,
lhms <lhms-devel@lists.sourceforge.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
mel@csn.ul.ie, Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19
Date: Mon, 7 Nov 2005 13:20:09 +0100 [thread overview]
Message-ID: <20051107122009.GD3609@elte.hu> (raw)
In-Reply-To: <1131361258.5976.53.camel@localhost>
* Dave Hansen <haveblue@us.ibm.com> wrote:
> On Mon, 2005-11-07 at 09:00 +0100, Ingo Molnar wrote:
> > * Linus Torvalds <torvalds@osdl.org> wrote:
> > > So remappable kernels are certainly doable, they just have more
> > > fundamental problems than remappable user space _ever_ has. Both from
> > > a performance and from a complexity angle.
> >
> > furthermore, it doesnt bring us any closer to removable RAM. The problem
> > is still unsolvable (due to the 'how to do you find live pointers to fix
> > up' issue), even if the full kernel VM is 'mapped' at 4K granularity.
>
> I'm not sure I understand. If you're remapping, why do you have to
> find live and fix up live pointers? Are you talking about things that
> require fixed _physical_ addresses?
RAM removal, not RAM replacement. I explained all the variants in an
earlier email in this thread. "extending RAM" is relatively easy.
"replacing RAM" while doable, is probably undesirable. "removing RAM"
impossible.
Ingo
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next prev parent reply other threads:[~2005-11-07 12:20 UTC|newest]
Thread overview: 225+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-04 1:00 Andy Nelson
2005-11-04 1:16 ` Martin J. Bligh
2005-11-04 1:27 ` Nick Piggin
2005-11-04 5:14 ` Linus Torvalds
2005-11-04 6:10 ` Paul Jackson
2005-11-04 6:38 ` Ingo Molnar
2005-11-04 7:26 ` Paul Jackson
2005-11-04 7:37 ` Ingo Molnar
2005-11-04 15:31 ` Linus Torvalds
2005-11-04 15:39 ` Martin J. Bligh
2005-11-04 15:53 ` Ingo Molnar
2005-11-06 7:34 ` Paul Jackson
2005-11-06 15:55 ` Linus Torvalds
2005-11-06 18:18 ` Paul Jackson
2005-11-06 8:44 ` Kyle Moffett
2005-11-06 16:12 ` Linus Torvalds
2005-11-06 17:00 ` Linus Torvalds
2005-11-07 8:00 ` Ingo Molnar
2005-11-07 11:00 ` Dave Hansen
2005-11-07 12:20 ` Ingo Molnar [this message]
2005-11-07 19:34 ` Steven Rostedt
2005-11-07 23:38 ` Joel Schopp
2005-11-04 7:44 ` Eric Dumazet
2005-11-07 16:42 ` Adam Litke
2005-11-04 14:56 ` Andy Nelson
2005-11-04 15:18 ` Ingo Molnar
2005-11-04 15:39 ` Andy Nelson
2005-11-04 16:05 ` Ingo Molnar
2005-11-04 16:07 ` Linus Torvalds
2005-11-04 16:40 ` Ingo Molnar
2005-11-04 17:22 ` Linus Torvalds
2005-11-04 17:43 ` Andy Nelson
2005-11-04 16:00 ` Linus Torvalds
2005-11-04 16:13 ` Martin J. Bligh
2005-11-04 16:40 ` Linus Torvalds
2005-11-04 17:10 ` Martin J. Bligh
2005-11-04 16:14 ` Andy Nelson
2005-11-04 16:49 ` Linus Torvalds
-- strict thread matches above, loose matches on Subject: below --
2005-11-05 1:52 Seth, Rohit, Friday, November
2005-11-05 1:37 Seth, Rohit, Nick
2005-11-07 0:34 ` Andy Nelson
2005-11-07 18:58 ` Adam Litke
2005-11-07 20:51 ` Rohit Seth
2005-11-07 20:55 ` Andy Nelson
2005-11-07 20:58 ` Martin J. Bligh
2005-11-07 21:20 ` Rohit Seth
2005-11-07 21:33 ` Adam Litke
2005-11-08 2:12 ` David Gibson
2005-11-07 21:11 ` Adam Litke
2005-11-07 21:31 ` Rohit Seth
2005-11-04 21:51 Andy Nelson
2005-11-04 17:56 Andy Nelson
2005-11-04 17:03 Andy Nelson
2005-11-04 17:49 ` Linus Torvalds
2005-11-04 17:51 ` Andy Nelson
2005-11-04 20:12 ` Ingo Molnar
2005-11-04 21:04 ` Andy Nelson
2005-11-04 21:14 ` Ingo Molnar
2005-11-04 21:22 ` Linus Torvalds
2005-11-04 21:39 ` Linus Torvalds
2005-11-05 2:48 ` Rob Landley
2005-11-06 10:59 ` Paul Jackson
2005-11-04 21:31 ` Gregory Maxwell
2005-11-04 22:43 ` Andi Kleen
2005-11-05 0:07 ` Nick Piggin
2005-11-06 1:30 ` Zan Lynx
2005-11-06 2:25 ` Rob Landley
2005-11-04 15:19 Andy Nelson
2005-10-30 18:33 Mel Gorman
2005-10-31 5:57 ` [Lhms-devel] " Mike Kravetz
2005-10-31 6:37 ` Nick Piggin
2005-10-31 7:54 ` Andrew Morton
2005-10-31 7:11 ` Nick Piggin
2005-10-31 16:19 ` Mel Gorman
2005-10-31 23:54 ` Nick Piggin
2005-11-01 1:28 ` Mel Gorman
2005-11-01 1:42 ` Nick Piggin
2005-10-31 14:34 ` Martin J. Bligh
2005-10-31 19:24 ` Andrew Morton
2005-10-31 19:40 ` Martin J. Bligh
2005-10-31 23:59 ` Nick Piggin
2005-11-01 1:36 ` Mel Gorman
2005-10-31 23:29 ` Nick Piggin
2005-11-01 0:59 ` Mel Gorman
2005-11-01 1:31 ` Nick Piggin
2005-11-01 2:07 ` Mel Gorman
2005-11-01 2:35 ` Nick Piggin
2005-11-01 11:57 ` Mel Gorman
2005-11-01 13:56 ` Ingo Molnar
2005-11-01 14:10 ` Dave Hansen
2005-11-01 14:29 ` Ingo Molnar
2005-11-01 14:49 ` Dave Hansen
2005-11-01 15:01 ` Ingo Molnar
2005-11-01 15:22 ` Dave Hansen
2005-11-02 8:49 ` Ingo Molnar
2005-11-02 9:02 ` Nick Piggin
2005-11-02 9:17 ` Ingo Molnar
2005-11-02 9:32 ` Dave Hansen
2005-11-02 9:48 ` Nick Piggin
2005-11-02 10:54 ` Dave Hansen
2005-11-02 15:02 ` Martin J. Bligh
2005-11-03 3:21 ` Nick Piggin
2005-11-03 15:36 ` Martin J. Bligh
2005-11-03 15:40 ` Arjan van de Ven
2005-11-03 15:51 ` Linus Torvalds
2005-11-03 15:57 ` Martin J. Bligh
2005-11-03 16:20 ` Arjan van de Ven
2005-11-03 16:27 ` Mel Gorman
2005-11-03 16:46 ` Linus Torvalds
2005-11-03 16:52 ` Martin J. Bligh
2005-11-03 17:19 ` Linus Torvalds
2005-11-03 17:48 ` Dave Hansen
2005-11-03 17:51 ` Martin J. Bligh
2005-11-03 17:59 ` Arjan van de Ven
2005-11-03 18:08 ` Linus Torvalds
2005-11-03 18:17 ` Martin J. Bligh
2005-11-03 18:44 ` Linus Torvalds
2005-11-03 18:51 ` Martin J. Bligh
2005-11-03 19:35 ` Linus Torvalds
2005-11-03 22:40 ` Martin J. Bligh
2005-11-03 22:56 ` Linus Torvalds
2005-11-03 23:01 ` Martin J. Bligh
2005-11-04 0:58 ` Nick Piggin
2005-11-04 1:06 ` Linus Torvalds
2005-11-04 1:20 ` Paul Mackerras
2005-11-04 1:22 ` Nick Piggin
2005-11-04 1:48 ` Mel Gorman
2005-11-04 1:59 ` Nick Piggin
2005-11-04 2:35 ` Mel Gorman
2005-11-04 1:26 ` Mel Gorman
2005-11-03 21:11 ` Mel Gorman
2005-11-03 18:03 ` Linus Torvalds
2005-11-03 20:00 ` Paul Jackson
2005-11-03 20:46 ` Mel Gorman
2005-11-03 18:48 ` Martin J. Bligh
2005-11-03 19:08 ` Linus Torvalds
2005-11-03 22:37 ` Martin J. Bligh
2005-11-03 23:16 ` Linus Torvalds
2005-11-03 23:39 ` Martin J. Bligh
2005-11-04 0:42 ` Nick Piggin
2005-11-04 4:39 ` Andrew Morton
2005-11-04 16:22 ` Mel Gorman
2005-11-03 15:53 ` Martin J. Bligh
2005-11-02 14:57 ` Martin J. Bligh
2005-11-01 16:48 ` Kamezawa Hiroyuki
2005-11-01 16:59 ` Kamezawa Hiroyuki
2005-11-01 17:19 ` Mel Gorman
2005-11-02 0:32 ` KAMEZAWA Hiroyuki
2005-11-02 11:22 ` Mel Gorman
2005-11-01 18:06 ` linux-os (Dick Johnson)
2005-11-02 7:19 ` Ingo Molnar
2005-11-02 7:46 ` Gerrit Huizenga
2005-11-02 8:50 ` Nick Piggin
2005-11-02 9:12 ` Gerrit Huizenga
2005-11-02 9:37 ` Nick Piggin
2005-11-02 10:17 ` Gerrit Huizenga
2005-11-02 23:47 ` Rob Landley
2005-11-03 4:43 ` Nick Piggin
2005-11-03 6:07 ` Rob Landley
2005-11-03 7:34 ` Nick Piggin
2005-11-03 17:54 ` Rob Landley
2005-11-03 20:13 ` Jeff Dike
2005-11-03 16:35 ` Jeff Dike
2005-11-03 16:23 ` Badari Pulavarty
2005-11-03 18:27 ` Jeff Dike
2005-11-03 18:49 ` Rob Landley
2005-11-04 4:52 ` Andrew Morton
2005-11-04 5:35 ` Paul Jackson
2005-11-04 5:48 ` Andrew Morton
2005-11-04 6:42 ` Paul Jackson
2005-11-04 7:10 ` Andrew Morton
2005-11-04 7:45 ` Paul Jackson
2005-11-04 8:02 ` Andrew Morton
2005-11-04 9:52 ` Paul Jackson
2005-11-04 15:27 ` Martin J. Bligh
2005-11-04 15:19 ` Martin J. Bligh
2005-11-04 17:38 ` Andrew Morton
2005-11-04 6:16 ` Bron Nelson
2005-11-02 10:41 ` Ingo Molnar
2005-11-02 11:04 ` Gerrit Huizenga
2005-11-02 12:00 ` Ingo Molnar
2005-11-02 12:42 ` Dave Hansen
2005-11-02 15:02 ` Gerrit Huizenga
2005-11-03 0:10 ` Rob Landley
2005-11-02 7:57 ` Nick Piggin
2005-11-02 0:51 ` Nick Piggin
2005-11-02 7:42 ` Dave Hansen
2005-11-02 8:24 ` Nick Piggin
2005-11-02 8:33 ` Yasunori Goto
2005-11-02 8:43 ` Nick Piggin
2005-11-02 14:51 ` Martin J. Bligh
2005-11-02 23:28 ` Rob Landley
2005-11-03 5:26 ` Jeff Dike
2005-11-03 5:41 ` Rob Landley
2005-11-01 14:41 ` Mel Gorman
2005-11-01 14:46 ` Ingo Molnar
2005-11-01 15:23 ` Mel Gorman
2005-11-01 18:33 ` Rob Landley
2005-11-01 19:02 ` Ingo Molnar
2005-11-01 14:50 ` Dave Hansen
2005-11-01 15:24 ` Mel Gorman
2005-11-02 5:11 ` Andrew Morton
2005-11-01 18:23 ` Rob Landley
2005-11-01 20:31 ` Joel Schopp
2005-11-01 20:59 ` Joel Schopp
2005-11-02 1:06 ` Nick Piggin
2005-11-02 1:41 ` Martin J. Bligh
2005-11-02 2:03 ` Nick Piggin
2005-11-02 2:24 ` Martin J. Bligh
2005-11-02 2:49 ` Nick Piggin
2005-11-02 4:39 ` Martin J. Bligh
2005-11-02 5:09 ` Nick Piggin
2005-11-02 5:14 ` Martin J. Bligh
2005-11-02 6:23 ` KAMEZAWA Hiroyuki
2005-11-02 10:15 ` Nick Piggin
2005-11-02 7:19 ` Yasunori Goto
2005-11-02 11:48 ` Mel Gorman
2005-11-02 11:41 ` Mel Gorman
2005-11-02 11:37 ` Mel Gorman
2005-11-02 15:11 ` Mel Gorman
2005-11-01 15:25 ` Martin J. Bligh
2005-11-01 15:33 ` Dave Hansen
2005-11-01 16:57 ` Mel Gorman
2005-11-01 17:00 ` Mel Gorman
2005-11-01 18:58 ` Rob Landley
2005-11-01 14:40 ` Avi Kivity
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