From: Christoph Lameter <clameter@sgi.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] [8/13] Enable the mask allocator for x86
Date: Mon, 10 Mar 2008 10:13:49 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0803101011530.24069@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20080308115408.GC27074@one.firstfloor.org>
On Sat, 8 Mar 2008, Andi Kleen wrote:
> What sparsemem reference do you mean?
Its just the use of MAX_DMA_ADDRESS in mm/sparse-vmemmap.c
> But the ZONE_DMA32 actually makes sense, but changing the semantics
> under such a large driver base isn't a good idea.
The driver base can only be the x86_64 only device drivers since the zone
is not used by any other architectures. That is fairly small AFAICT.
> It depends on the requirements of the bootmem user. Some do need
> memory <4GB, some do not. The mask allocator itself is a client in fact
> and it requires low memory of course.
The point is that it would be good to relocate as much memory allocated at
boot as possible beyond 4GB.
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next prev parent reply other threads:[~2008-03-10 17:13 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-07 9:07 [PATCH] [0/13] General DMA zone rework Andi Kleen
2008-03-07 9:07 ` [PATCH] [2/13] Make get_order(0) return 0 Andi Kleen
2008-03-07 9:07 ` [PATCH] [3/13] Make kvm bad_page symbol static Andi Kleen
2008-03-07 9:07 ` [PATCH] [4/13] Prepare page_alloc for the maskable allocator Andi Kleen
2008-03-07 18:19 ` Sam Ravnborg
2008-03-07 18:36 ` Cyrill Gorcunov
2008-03-07 19:02 ` Andi Kleen
2008-03-07 9:07 ` [PATCH] [5/13] Add mask allocator statistics to vmstat.[ch] Andi Kleen
2008-03-08 2:24 ` Christoph Lameter
2008-03-07 9:07 ` [PATCH] [6/13] Core maskable allocator Andi Kleen
2008-03-07 10:53 ` Johannes Weiner
2008-03-07 11:14 ` Andi Kleen
2008-03-07 17:05 ` Randy Dunlap
2008-03-07 17:31 ` Andi Kleen
2008-03-07 17:33 ` Randy Dunlap
2008-03-07 17:43 ` Andi Kleen
2008-03-07 17:51 ` Randy Dunlap
2008-03-07 21:13 ` Cyrill Gorcunov
2008-03-07 23:28 ` Andi Kleen
2008-03-08 5:03 ` KAMEZAWA Hiroyuki
2008-03-08 5:41 ` KAMEZAWA Hiroyuki
2008-03-08 11:41 ` Andi Kleen
2008-03-11 15:34 ` Jonathan Corbet
2008-03-11 15:54 ` Andi Kleen
2008-03-07 9:07 ` [PATCH] [7/13] Implement compat hooks for GFP_DMA Andi Kleen
2008-03-07 9:07 ` [PATCH] [8/13] Enable the mask allocator for x86 Andi Kleen
2008-03-07 18:32 ` Sam Ravnborg
2008-03-07 19:03 ` Andi Kleen
2008-03-07 19:09 ` Sam Ravnborg
2008-03-08 2:37 ` Christoph Lameter
2008-03-08 6:35 ` Yinghai Lu
2008-03-08 7:31 ` Christoph Lameter
2008-03-08 11:54 ` Andi Kleen
2008-03-10 17:13 ` Christoph Lameter [this message]
2008-03-07 9:07 ` [PATCH] [9/13] Remove set_dma_reserve Andi Kleen
2008-03-07 9:07 ` [PATCH] [10/13] Switch the 32bit dma_alloc_coherent functions over to use the maskable allocator Andi Kleen
2008-03-07 9:07 ` [PATCH] [11/13] Switch x86-64 dma_alloc_coherent over to " Andi Kleen
2008-03-07 9:07 ` [PATCH] [12/13] Add vmstat statistics for new swiotlb code Andi Kleen
2008-03-08 2:38 ` Christoph Lameter
2008-03-07 9:07 ` [PATCH] [13/13] Convert x86-64 swiotlb to use the mask allocator directly Andi Kleen
2008-03-07 15:18 ` [PATCH] [0/13] General DMA zone rework Rene Herman
2008-03-07 15:22 ` Rene Herman
2008-03-07 15:31 ` Andi Kleen
2008-03-07 15:34 ` Andi Kleen
2008-03-07 20:51 ` Luiz Fernando N. Capitulino
2008-03-08 0:46 ` Andi Kleen
2008-03-10 18:03 ` Luiz Fernando N. Capitulino
2008-03-10 18:08 ` Andi Kleen
2008-03-11 17:26 ` Luiz Fernando N. Capitulino
2008-03-11 17:35 ` Andi Kleen
2008-03-11 18:00 ` Luiz Fernando N. Capitulino
2008-03-11 18:49 ` Andi Kleen
2008-03-11 19:36 ` Luiz Fernando N. Capitulino
2008-03-08 2:42 ` Christoph Lameter
2008-03-08 11:57 ` Andi Kleen
2008-03-10 17:14 ` Christoph Lameter
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