From: Andi Kleen <ak@suse.de>
To: Andy Isaacson <adi@hexapodia.org>
Cc: Andi Kleen <ak@suse.de>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
Christoph Lameter <clameter@sgi.com>, Mel Gorman <mel@skynet.ie>,
Lee.Schermerhorn@hp.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-mips@linux-mips.org
Subject: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
Date: Tue, 14 Aug 2007 23:05:51 +0200 [thread overview]
Message-ID: <20070814210551.GU3406@bingen.suse.de> (raw)
In-Reply-To: <20070814194356.GL21492@hexapodia.org>
> Yeah, if you stick a PCI chip with a 30-bit PCI DMA mask into a machine
> with memory above 1GB, then copying has to happen. Unless the memory
> allocator can avoid returning memory in the un-dma-able region...
With GFP_DMA this was possible, but the capability will be gone
for x86 systems if your required DMA region is < 4GB.
Besides I'm currently not planning to change mips so it might
stay the same if Ralf prefers that.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Andy Isaacson <adi@hexapodia.org>
Cc: Andi Kleen <ak@suse.de>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
Christoph Lameter <clameter@sgi.com>, Mel Gorman <mel@skynet.ie>,
Lee.Schermerhorn@hp.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-mips@linux-mips.org
Subject: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
Date: Tue, 14 Aug 2007 23:05:51 +0200 [thread overview]
Message-ID: <20070814210551.GU3406@bingen.suse.de> (raw)
In-Reply-To: <20070814194356.GL21492@hexapodia.org>
> Yeah, if you stick a PCI chip with a 30-bit PCI DMA mask into a machine
> with memory above 1GB, then copying has to happen. Unless the memory
> allocator can avoid returning memory in the un-dma-able region...
With GFP_DMA this was possible, but the capability will be gone
for x86 systems if your required DMA region is < 4GB.
Besides I'm currently not planning to change mips so it might
stay the same if Ralf prefers that.
-Andi
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next prev parent reply other threads:[~2007-08-14 20:11 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-09 21:06 [PATCH 0/4] Use one zonelist per node instead of multiple zonelists v3 Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:06 ` [PATCH 1/4] Use zonelists instead of zones when direct reclaiming pages Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:19 ` Christoph Lameter
2007-08-09 21:19 ` Christoph Lameter
2007-08-09 21:06 ` [PATCH 2/4] Use one zonelist that is filtered instead of multiple zonelists Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:27 ` Christoph Lameter
2007-08-09 21:27 ` Christoph Lameter
2007-08-09 21:07 ` [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer Mel Gorman
2007-08-09 21:07 ` Mel Gorman
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 23:33 ` Mel Gorman
2007-08-09 23:33 ` Mel Gorman
2007-08-10 1:44 ` Christoph Lameter
2007-08-10 1:44 ` Christoph Lameter
2007-08-10 10:47 ` Mel Gorman
2007-08-10 10:47 ` Mel Gorman
2007-08-10 17:37 ` Christoph Lameter
2007-08-10 17:37 ` Christoph Lameter
2007-08-10 18:13 ` Andi Kleen
2007-08-10 18:13 ` Andi Kleen
2007-08-10 19:02 ` Christoph Lameter
2007-08-10 19:02 ` Christoph Lameter
2007-08-11 1:04 ` Andi Kleen
2007-08-11 1:04 ` Andi Kleen
2007-08-13 21:25 ` Christoph Lameter
2007-08-13 21:25 ` Christoph Lameter
2007-08-13 22:50 ` Andi Kleen
2007-08-13 22:50 ` Andi Kleen
2007-08-13 22:00 ` Christoph Lameter
2007-08-13 22:00 ` Christoph Lameter
2007-08-13 22:58 ` Andi Kleen
2007-08-13 22:58 ` Andi Kleen
2007-08-13 22:09 ` Christoph Lameter
2007-08-13 22:09 ` Christoph Lameter
2007-08-13 23:08 ` Andi Kleen
2007-08-13 23:08 ` Andi Kleen
2007-08-13 22:22 ` Christoph Lameter
2007-08-13 22:22 ` Christoph Lameter
2007-08-13 23:42 ` Andi Kleen
2007-08-13 23:42 ` Andi Kleen
2007-08-13 22:52 ` Christoph Lameter
2007-08-13 22:52 ` Christoph Lameter
2007-08-13 23:55 ` Andi Kleen
2007-08-13 23:55 ` Andi Kleen
2007-08-13 23:12 ` Christoph Lameter
2007-08-13 23:12 ` Christoph Lameter
2007-08-14 0:16 ` Andi Kleen
2007-08-14 0:16 ` Andi Kleen
2007-08-13 23:25 ` Christoph Lameter
2007-08-13 23:25 ` Christoph Lameter
2007-08-14 0:25 ` Andi Kleen
2007-08-14 0:25 ` Andi Kleen
2007-08-13 22:38 ` Christoph Lameter
2007-08-13 22:38 ` Christoph Lameter
2007-08-13 23:43 ` Andi Kleen
2007-08-13 23:43 ` Andi Kleen
2007-08-13 22:54 ` Christoph Lameter
2007-08-13 22:54 ` Christoph Lameter
2007-08-14 0:00 ` Andi Kleen
2007-08-14 0:00 ` Andi Kleen
2007-08-13 23:16 ` Christoph Lameter
2007-08-13 23:16 ` Christoph Lameter
2007-08-14 0:16 ` Andi Kleen
2007-08-14 0:16 ` Andi Kleen
2007-08-13 23:27 ` Christoph Lameter
2007-08-13 23:27 ` Christoph Lameter
2007-08-14 0:26 ` Andi Kleen
2007-08-14 0:26 ` Andi Kleen
2007-08-14 19:56 ` Christoph Lameter
2007-08-14 19:56 ` Christoph Lameter
2007-08-13 23:22 ` Alan Cox
2007-08-13 23:22 ` Alan Cox
2007-08-14 0:14 ` Andi Kleen
2007-08-14 0:14 ` Andi Kleen
2007-08-13 23:44 ` Alan Cox
2007-08-13 23:44 ` Alan Cox
2007-08-14 19:11 ` Andy Isaacson
2007-08-14 19:11 ` Andy Isaacson
2007-08-14 20:23 ` Andi Kleen
2007-08-14 20:23 ` Andi Kleen
2007-08-14 19:43 ` Andy Isaacson
2007-08-14 19:43 ` Andy Isaacson
2007-08-14 21:05 ` Andi Kleen [this message]
2007-08-14 21:05 ` Andi Kleen
2007-08-15 11:37 ` Ralf Baechle
2007-08-15 11:37 ` Ralf Baechle
2007-08-15 12:59 ` Andi Kleen
2007-08-15 12:59 ` Andi Kleen
2007-08-15 12:32 ` Ralf Baechle
2007-08-15 12:32 ` Ralf Baechle
2007-08-15 19:59 ` Christoph Lameter
2007-08-15 19:59 ` Christoph Lameter
2007-08-09 21:07 ` [PATCH 4/4] Apply MPOL_BIND policy to two highest zones when highest is ZONE_MOVABLE Mel Gorman
2007-08-09 21:07 ` Mel Gorman
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:19 ` [PATCH 0/4] Use one zonelist per node instead of multiple zonelists v3 Christoph Lameter
2007-08-09 21:19 ` Christoph Lameter
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