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.
next prev parent reply other threads:[~2008-03-10 17:14 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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