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Date: Tue, 15 Jan 2002 14:46:52 +0100
From: Stephan von Krawczynski <skraw@ithnet.com>
To: Gerd Knorr <kraxel@bytesex.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Memory problem with bttv driver
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On Tue, 15 Jan 2002 14:20:17 +0100
Gerd Knorr <kraxel@bytesex.org> wrote:

> On Tue, Jan 15, 2002 at 12:14:24PM +0100, Stephan von Krawczynski wrote:
> > On 15 Jan 2002 10:17:03 GMT
> > Gerd Knorr <kraxel@bytesex.org> wrote:
> > 
> > > MM wise it shouldn't make a difference whenever you are using 0.7.83 or
> > > 0.7.88 (I've mailed 0.7.88 patches to macelo for 2.4.18 btw).  The 0.8.x
> > > versions have a complete different way to do the memory management.
> > 
> > No vmallocs?
> 
> Yes.  Instead of remapping vmalloced kernel memory it gives you shared
> anonymous pages, then does zerocopy DMA using kiobufs.  You may run in
> trouble with >4GB machines.

Interesting.
What's the problem on > 4GB ?

Regards,
Stephan

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