From: Rob Landley <rob@landley.net>
To: Gerrit Huizenga <gh@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Dave Hansen <haveblue@us.ibm.com>, Mel Gorman <mel@csn.ul.ie>,
Nick Piggin <nickpiggin@yahoo.com.au>,
"Martin J. Bligh" <mbligh@mbligh.org>,
Andrew Morton <akpm@osdl.org>,
kravetz@us.ibm.com, linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
lhms <lhms-devel@lists.sourceforge.net>
Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19
Date: Wed, 2 Nov 2005 18:10:27 -0600 [thread overview]
Message-ID: <200511021810.28948.rob@landley.net> (raw)
In-Reply-To: <E1EXK87-0008JB-00@w-gerrit.beaverton.ibm.com>
On Wednesday 02 November 2005 09:02, Gerrit Huizenga wrote:
> > but that's obviously not 'generic unpluggable kernel RAM'. It's very
> > special RAM: RAM that is free or easily freeable. I never argued that
> > such RAM is not returnable to the hypervisor.
>
> Okay - and 'generic unpluggable kernel RAM' has not been a goal for
> the hypervisor based environments. I believe it is closer to being
> a goal for those machines which want to hot-remove DIMMs or physical
> memory, e.g. those with IA64 machines wishing to remove entire nodes
Keep in mind that just about any virtualized environment might benefit from
being able to tell the parent system "we're not using this ram". I mentioned
UML, and I can also imagine a Linux driver that signals qemu (or even vmware)
to say "this chunk of physical memory isn't currently in use", and even if
they don't actually _free_ it they can call madvise() on it.
Heck, if we have prezeroing of large blocks, telling your emulator to
madvise(ADV_DONTNEED) the pages for you should just plug right in to that
infrastructure...
Rob
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next prev parent reply other threads:[~2005-11-03 0:10 UTC|newest]
Thread overview: 253+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-30 18:33 Mel Gorman
2005-10-30 18:34 ` [PATCH 1/7] Fragmentation Avoidance V19: 001_antidefrag_flags Mel Gorman
2005-10-30 18:34 ` [PATCH 2/7] Fragmentation Avoidance V19: 002_usemap Mel Gorman
2005-10-30 18:34 ` [PATCH 3/7] Fragmentation Avoidance V19: 003_fragcore Mel Gorman
2005-10-30 18:34 ` [PATCH 4/7] Fragmentation Avoidance V19: 004_fallback Mel Gorman
2005-10-30 18:34 ` [PATCH 5/7] Fragmentation Avoidance V19: 005_largealloc_tryharder Mel Gorman
2005-10-30 18:34 ` [PATCH 6/7] Fragmentation Avoidance V19: 006_percpu Mel Gorman
2005-10-30 18:34 ` [PATCH 7/7] Fragmentation Avoidance V19: 007_stats Mel Gorman
2005-10-31 5:57 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 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
2005-11-04 7:26 ` [patch] swapin rlimit Ingo Molnar
2005-11-04 7:36 ` Andrew Morton
2005-11-04 8:07 ` Ingo Molnar
2005-11-04 10:06 ` Paul Jackson
2005-11-04 15:24 ` Martin J. Bligh
2005-11-04 8:18 ` Arjan van de Ven
2005-11-04 10:04 ` Paul Jackson
2005-11-04 15:14 ` Rob Landley
2005-11-04 10:14 ` Bernd Petrovitsch
2005-11-04 10:21 ` Ingo Molnar
2005-11-04 11:17 ` Bernd Petrovitsch
2005-11-02 10:41 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 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 [this message]
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
2005-11-04 3:26 ` [uml-devel] " Blaisorblade
2005-11-04 15:50 ` Rob Landley
2005-11-04 17:18 ` Blaisorblade
2005-11-04 17:44 ` Rob Landley
2005-11-02 12:38 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 - Summary Mel Gorman
2005-11-03 3:14 ` Nick Piggin
2005-11-03 12:19 ` Mel Gorman
2005-11-10 18:47 ` Steve Lord
2005-11-03 15:34 ` Martin J. Bligh
2005-11-01 14:41 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 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
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
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
2005-11-04 15:19 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 17:56 Andy Nelson
2005-11-04 21:51 Andy Nelson
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
2005-11-05 1:52 Seth, Rohit, Friday, November
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