From: Andi Kleen <ak@suse.de>
To: "Martin J. Bligh" <mbligh@mbligh.org>
Cc: Christoph Lameter <clameter@sgi.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
akpm@google.com, linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
James Bottomley <James.Bottomley@steeleye.com>,
linux-mm@kvack.org
Subject: Re: More thoughts on getting rid of ZONE_DMA
Date: Sun, 24 Sep 2006 09:26:40 +0200 [thread overview]
Message-ID: <200609240926.41208.ak@suse.de> (raw)
In-Reply-To: <4515EF28.9000805@mbligh.org>
> If it's the 16MB DMA window for ia32 we're talking about, wouldn't
> it be easier just to remove it from the fallback lists? (assuming
> you have at least 128MB of memory or something, blah, blah). Saves
> doing migration later.
That is essentially already the case because the mm has special
heuristics to preserve lower zones. Usually those tend to keep the
16MB mostly free unless you really use GFP_DMA.
-Andi
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next prev parent reply other threads:[~2006-09-24 7:26 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-22 4:02 [RFC] Initial alpha-0 for new page allocator API Christoph Lameter
2006-09-22 6:17 ` Andi Kleen
2006-09-22 16:35 ` Christoph Lameter
2006-09-22 19:10 ` Andi Kleen
2006-09-22 19:17 ` Christoph Lameter
2006-09-22 19:24 ` Martin Bligh
2006-09-22 20:10 ` Alan Cox
2006-09-22 20:02 ` Andi Kleen
2006-09-22 20:14 ` Martin Bligh
2006-09-22 20:23 ` Christoph Lameter
2006-09-22 20:41 ` Jesse Barnes
2006-09-22 21:01 ` Christoph Lameter
2006-09-22 21:14 ` Jesse Barnes
2006-09-22 21:21 ` Christoph Lameter
2006-09-22 20:48 ` Andi Kleen
2006-09-22 21:13 ` Christoph Lameter
2006-09-22 21:32 ` Christoph Lameter
2006-09-22 23:34 ` More thoughts on getting rid of ZONE_DMA Andi Kleen
2006-09-23 0:23 ` Christoph Lameter
2006-09-23 0:39 ` Andi Kleen
2006-09-23 0:25 ` Christoph Lameter
2006-09-23 0:37 ` Andi Kleen
2006-09-24 2:13 ` Christoph Lameter
2006-09-24 2:36 ` Martin J. Bligh
2006-09-24 7:26 ` Andi Kleen [this message]
2006-09-24 7:19 ` Andi Kleen
2006-09-22 17:36 ` [RFC] Initial alpha-0 for new page allocator API Christoph Lameter
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