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:
next prev parent reply other threads:[~2007-07-14 17:17 UTC|newest]
Thread overview: 38+ 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 13:35 ` [PATCH 1/7] sparsemem: clean up spelling error in comments 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 13:36 ` [PATCH 3/7] Generic Virtual Memmap support for SPARSEMEM Andy Whitcroft
2007-07-13 14:51 ` KAMEZAWA Hiroyuki
2007-07-13 22:42 ` Christoph Lameter
2007-07-13 23:12 ` KAMEZAWA Hiroyuki
2007-07-13 23:17 ` Christoph Lameter
2007-07-13 23:25 ` KAMEZAWA Hiroyuki
2007-07-14 15:20 ` Christoph Hellwig
2007-07-14 16:06 ` Christoph Lameter
2007-07-14 16:33 ` Christoph Hellwig
2007-07-23 19:36 ` Christoph Lameter
2007-07-30 14:39 ` Andy Whitcroft
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
2007-07-19 23:25 ` Andrew Morton
2007-07-13 13:37 ` [PATCH 5/7] IA64: SPARSEMEM_VMEMMAP 16K " Andy Whitcroft
2007-07-13 13:37 ` [PATCH 6/7] SPARC64: SPARSEMEM_VMEMMAP support Andy Whitcroft
2007-07-13 17:00 ` Christoph Lameter
2007-07-13 13:38 ` [PATCH 7/7] ppc64: " Andy Whitcroft
2007-07-13 17:04 ` [PATCH 0/7] Sparsemem Virtual Memmap V5 Christoph Lameter
2007-07-13 17:40 ` Andrew Morton
2007-07-13 18:23 ` Christoph Lameter
2007-07-14 8:57 ` Russell King
2007-07-14 15:10 ` Christoph Lameter
2007-07-14 17:16 ` Russell King [this message]
2007-07-13 20:08 ` Roman Zippel
2007-07-13 22:02 ` Luck, Tony
2007-07-13 22:21 ` Christoph Lameter
2007-07-13 22:37 ` Luck, Tony
2007-07-13 22:54 ` Christoph Lameter
2007-07-13 23:27 ` KAMEZAWA Hiroyuki
2007-07-13 23:28 ` Christoph Lameter
2007-07-14 8:49 ` Nick Piggin
2007-07-14 15:07 ` Christoph Lameter
2007-07-13 22:43 ` David Miller
2007-07-26 8:05 ` Paul Mundt
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