linux-kernel - Re: Can Linux live without DMA zone?

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Message-Id: <1162486642.14530.64.camel@laptopd505.fenrus.org>
Date:	Thu, 02 Nov 2006 17:57:22 +0100
From:	Arjan van de Ven <arjan@...radead.org>
To:	Phillip Susi <psusi@....rr.com>
Cc:	Jun Sun <jsun@...sun.net>, linux-kernel@...r.kernel.org
Subject: Re: Can Linux live without DMA zone?

On Thu, 2006-11-02 at 11:32 -0500, Phillip Susi wrote:
> Shouldn't only ancient ISA drivers be using GFP_DMA?  You know, ones 
> that actually require it?  PCI drivers should not have this limit.


that is a nice theory, but unfortunately there is just a lot of "PCI"
hardware out there for which the designers decided to save a bit of
copper and only wire up the lower X address lines (for various values of
X)
-- 
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org

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