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From: Russell King <rmk@arm.linux.org.uk>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	Andy Whitcroft <apw@shadowen.org>, Nick Piggin <npiggin@suse.de>,
	Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH 0/7] Sparsemem Virtual Memmap V5
Date: Sat, 14 Jul 2007 18:16:26 +0100	[thread overview]
Message-ID: <20070714171626.GA2037@flint.arm.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.64.0707140808040.30485@schroedinger.engr.sgi.com>

On Sat, Jul 14, 2007 at 08:10:49AM -0700, Christoph Lameter wrote:
> On Sat, 14 Jul 2007, Russell King wrote:
> 
> > It would also be nice to convert ARM to using sparsemem rather than
> > discontigmem, but despite having a patch adding the supporting common
> > infrastructure for the last year and a half or so, no one in the ARM
> > community is interested in it.
> 
> Yeah I was also not interested for the longest time because when I 
> became concerned when I looked at the code generated by sparsemem for 
> virt_to_page and page_address. But that is different now.
>  
> > Since I've no machines which use the present discontig support and
> > have more than a single bank of memory, I've no way to test and
> > progress sparsemem on ARM - and since no one's interested I'm probably
> > going to drop the ARM sparsemem git branch soon.
> 
> Could you keep it around for a while longer? sparse_virtual now allows 
> code reduction in page_address and virt_to_page even vs. discontig.

The patch is at:

  http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/arm:sparsemem.diff

it's not much.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:

WARNING: multiple messages have this Message-ID (diff)
From: Russell King <rmk@arm.linux.org.uk>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	Andy Whitcroft <apw@shadowen.org>, Nick Piggin <npiggin@suse.de>,
	Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH 0/7] Sparsemem Virtual Memmap V5
Date: Sat, 14 Jul 2007 18:16:26 +0100	[thread overview]
Message-ID: <20070714171626.GA2037@flint.arm.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.64.0707140808040.30485@schroedinger.engr.sgi.com>

On Sat, Jul 14, 2007 at 08:10:49AM -0700, Christoph Lameter wrote:
> On Sat, 14 Jul 2007, Russell King wrote:
> 
> > It would also be nice to convert ARM to using sparsemem rather than
> > discontigmem, but despite having a patch adding the supporting common
> > infrastructure for the last year and a half or so, no one in the ARM
> > community is interested in it.
> 
> Yeah I was also not interested for the longest time because when I 
> became concerned when I looked at the code generated by sparsemem for 
> virt_to_page and page_address. But that is different now.
>  
> > Since I've no machines which use the present discontig support and
> > have more than a single bank of memory, I've no way to test and
> > progress sparsemem on ARM - and since no one's interested I'm probably
> > going to drop the ARM sparsemem git branch soon.
> 
> Could you keep it around for a while longer? sparse_virtual now allows 
> code reduction in page_address and virt_to_page even vs. discontig.

The patch is at:

  http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/arm:sparsemem.diff

it's not much.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:

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  reply	other threads:[~2007-07-14 17:17 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-13 13:34 [PATCH 0/7] Sparsemem Virtual Memmap V5 Andy Whitcroft
2007-07-13 13:34 ` Andy Whitcroft
2007-07-13 13:35 ` [PATCH 1/7] sparsemem: clean up spelling error in comments Andy Whitcroft
2007-07-13 13:35   ` Andy Whitcroft
2007-07-13 13:35 ` [PATCH 2/7] sparsemem: record when a section has a valid mem_map Andy Whitcroft
2007-07-13 13:35   ` Andy Whitcroft
2007-07-13 14:24   ` [PATCH] Bah, hoisted by my own petard. Below is an updated version Andy Whitcroft
2007-07-13 13:36 ` [PATCH 3/7] Generic Virtual Memmap support for SPARSEMEM Andy Whitcroft
2007-07-13 13:36   ` Andy Whitcroft
2007-07-13 14:51   ` KAMEZAWA Hiroyuki
2007-07-13 14:51     ` KAMEZAWA Hiroyuki
2007-07-13 22:42     ` Christoph Lameter
2007-07-13 22:42       ` Christoph Lameter
2007-07-13 23:12       ` KAMEZAWA Hiroyuki
2007-07-13 23:12         ` KAMEZAWA Hiroyuki
2007-07-13 23:17         ` Christoph Lameter
2007-07-13 23:17           ` Christoph Lameter
2007-07-13 23:25           ` KAMEZAWA Hiroyuki
2007-07-13 23:25             ` KAMEZAWA Hiroyuki
2007-07-14 15:20   ` Christoph Hellwig
2007-07-14 15:20     ` Christoph Hellwig
2007-07-14 16:06     ` Christoph Lameter
2007-07-14 16:06       ` Christoph Lameter
2007-07-14 16:33       ` Christoph Hellwig
2007-07-14 16:33         ` Christoph Hellwig
2007-07-23 19:36         ` Christoph Lameter
2007-07-23 19:36           ` Christoph Lameter
2007-07-30 14:39     ` Andy Whitcroft
2007-07-30 14:39       ` Andy Whitcroft
2007-07-30 18:35       ` Christoph Lameter
2007-07-30 18:35         ` Christoph Lameter
2007-07-13 13:36 ` [PATCH 4/7] x86_64: SPARSEMEM_VMEMMAP 2M page size support Andy Whitcroft
2007-07-13 13:36   ` Andy Whitcroft
2007-07-19 23:25   ` Andrew Morton
2007-07-19 23:25     ` Andrew Morton
2007-07-13 13:37 ` [PATCH 5/7] IA64: SPARSEMEM_VMEMMAP 16K " Andy Whitcroft
2007-07-13 13:37   ` Andy Whitcroft
2007-07-13 13:37 ` [PATCH 6/7] SPARC64: SPARSEMEM_VMEMMAP support Andy Whitcroft
2007-07-13 13:37   ` Andy Whitcroft
2007-07-13 17:00   ` Christoph Lameter
2007-07-13 17:00     ` Christoph Lameter
2007-07-13 13:38 ` [PATCH 7/7] ppc64: " Andy Whitcroft
2007-07-13 13:38   ` Andy Whitcroft
2007-07-13 17:04 ` [PATCH 0/7] Sparsemem Virtual Memmap V5 Christoph Lameter
2007-07-13 17:04   ` Christoph Lameter
2007-07-13 17:40   ` Andrew Morton
2007-07-13 17:40     ` Andrew Morton
2007-07-13 18:23     ` Christoph Lameter
2007-07-13 18:23       ` Christoph Lameter
2007-07-14  8:57       ` Russell King
2007-07-14  8:57         ` Russell King
2007-07-14 15:10         ` Christoph Lameter
2007-07-14 15:10           ` Christoph Lameter
2007-07-14 17:16           ` Russell King [this message]
2007-07-14 17:16             ` Russell King
2007-07-13 20:08     ` Roman Zippel
2007-07-13 20:08       ` Roman Zippel
2007-07-13 22:02     ` Luck, Tony
2007-07-13 22:02       ` Luck, Tony
2007-07-13 22:21       ` Christoph Lameter
2007-07-13 22:21         ` Christoph Lameter
2007-07-13 22:37         ` Luck, Tony
2007-07-13 22:37           ` Luck, Tony
2007-07-13 22:54           ` Christoph Lameter
2007-07-13 22:54             ` Christoph Lameter
2007-07-13 23:27             ` KAMEZAWA Hiroyuki
2007-07-13 23:27               ` KAMEZAWA Hiroyuki
2007-07-13 23:28               ` Christoph Lameter
2007-07-13 23:28                 ` Christoph Lameter
2007-07-14  8:49         ` Nick Piggin
2007-07-14  8:49           ` Nick Piggin
2007-07-14 15:07           ` Christoph Lameter
2007-07-14 15:07             ` Christoph Lameter
2007-07-13 22:43     ` David Miller
2007-07-13 22:43       ` David Miller, Andrew Morton
2007-07-26  8:05 ` Paul Mundt
2007-07-26  8:05   ` Paul Mundt

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