linux-kernel - Re: Query: DMA Engine support in make oldconfig

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Date:	Thu, 31 Aug 2006 21:50:22 -0700
From:	"Randy.Dunlap" <rdunlap@...otime.net>
To:	Grant Coady <gcoady.lk@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Query: DMA Engine support in make oldconfig

On Fri, 01 Sep 2006 14:18:23 +1000 Grant Coady wrote:

> Hi there,
> 
> make oldconfig from 2.6.17.11 to 2.6.18-rc5: This help text doesn't say 
> what the right choice should be?  Unclear to me anyway, so I take the 
> default, is that bad for an x86 32-bit box?
> "
> * DMA Engine support
> *
> Support for DMA engines (DMA_ENGINE) [N/y/?] (NEW) ?
> 
> DMA engines offload copy operations from the CPU to dedicated
> hardware, allowing the copies to happen asynchronously.
> "

I would guess that you don't have any hardware that is
supported, so enabling it will just use a little memory
(or at least that's all it should do -- not hurt anything
else).

---
~Randy
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