From: Paul Mundt <lethal@linux-sh.org>
To: Marcelo Tosatti <marcelo@kvack.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, olpc-devel@laptop.org
Subject: Re: [PATCH] introduce config option to disable DMA zone on i386
Date: Fri, 29 Dec 2006 02:30:37 +0900 [thread overview]
Message-ID: <20061228173037.GA22099@linux-sh.org> (raw)
In-Reply-To: <20061228170302.GA4335@dmt>
On Thu, Dec 28, 2006 at 03:03:02PM -0200, Marcelo Tosatti wrote:
> The following patch adds a config option to get rid of the DMA zone on i386.
>
> Architectures with devices that have no addressing limitations (eg. PPC)
> already work this way.
>
> This is useful for custom kernel builds where the developer is certain that
> there are no address limitations.
>
Don't know if you're aware or not, but there's already a CONFIG_ZONE_DMA
in -mm that accomplishes this, which goes a bit further in that it rips
out all of the generic ZONE_DMA references. Quite a few architectures
that have no interest in the zone are using this already.
next prev parent reply other threads:[~2006-12-28 17:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-28 17:03 [PATCH] introduce config option to disable DMA zone on i386 Marcelo Tosatti
2006-12-28 17:30 ` Paul Mundt [this message]
2006-12-28 17:43 ` Arjan van de Ven
2006-12-28 18:36 ` Jan Engelhardt
[not found] <fa.Nb4Y/frBNPmoag6ZL4pL3qEyDOs@ifi.uio.no>
[not found] ` <fa.XVmR+7tQ0v2oWVb7eyfQ8pGFhp8@ifi.uio.no>
2006-12-28 18:34 ` Robert Hancock
2006-12-28 18:37 ` Arjan van de Ven
2006-12-28 20:14 ` Robert Hancock
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