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From: David Muench <davemuench@gmail.com>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel List <xen-devel@lists.xensource.com>
Subject: Re: [ivtv-devel] Problems loading ivtv in Xen - DMA issues?
Date: Mon, 11 Jul 2005 09:08:14 -0400	[thread overview]
Message-ID: <bc0c36d305071106087630816c@mail.gmail.com> (raw)
In-Reply-To: <38a9ac6264e50346c160833d732fc567@cl.cam.ac.uk>

On 7/11/05, Keir Fraser <Keir.Fraser@cl.cam.ac.uk> wrote:
> 
> One last thing you might want to try is to edit
> linux-2.6.11/arch/xen/i386/kernel/pci-dma.c. There you will see that
> there are four separate uses of memcpy(), each conditional on a test of
> the form 'if (direction != DMA_xxx)'. You *might* have more success if
> you remove the direction-conditional tests and always memcpy.
> 
> Apart from that, this needs someone with hardware and expertise, and
> who cares about both ivtv and xen, to wade in. :-)

I'll give that a shot tonight, thanks for the suggestion. I really
appreciate your efforts and if that doesn't help, I'll see if anyone
on the ivtv-devel list is into Xen too. I wish I had the kernel
programming expertise myself. But at least the drivers work well in
dom0.

Stupid question, but is there any way to tell Xen to allocate a domU
contiguously? Or is that just not the Xen way, so to speak?

Dave

-- 
David Muench - davemuench@gmail.com
Jabber ID: dave@jabber.wasteland.org

  reply	other threads:[~2005-07-11 13:08 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bc0c36d305070607205e82ea14@mail.gmail.com>
     [not found] ` <1120750950.1556.24.camel@mud>
2005-07-07 16:07   ` [ivtv-devel] Problems loading ivtv in Xen - DMA issues? David Muench
2005-07-07 17:22     ` Keir Fraser
2005-07-07 17:34       ` David Muench
2005-07-08  4:01         ` Andrew May
2005-07-08 13:05         ` Keir Fraser
2005-07-08 15:38           ` David Muench
2005-07-08 16:50             ` Keir Fraser
2005-07-11 10:10             ` Keir Fraser
2005-07-11 13:08               ` David Muench [this message]
2005-07-11 13:20                 ` Keir Fraser
2005-07-13 19:51               ` David Muench
2005-07-13 22:06                 ` Keir Fraser
2005-07-15 12:43                   ` David Muench
2005-07-15 12:50                     ` Keir Fraser
2005-07-15 12:57                       ` David Muench

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