[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] Re: [ivtv-devel] Problems loading ivtv in Xen - DMA issues?


  • To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • From: David Muench <davemuench@xxxxxxxxx>
  • Date: Thu, 7 Jul 2005 13:34:06 -0400
  • Cc: ivtv-devel@xxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 07 Jul 2005 17:32:52 +0000
  • Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=RnbqnZ3gnTTga/ysZr/mmtEfGM/jeJSvhLLHFjwDeNLy2Y22km+dpCRoULVqJF5+DBDg0UOLZLmcjm1VJ3RyqI10FSMhIXUzI5xsXeBql+dCmwbl1mcVNepprAlAewgEFGGdxnRi9tnXuE4YgavSLp6iDjbnPIPuov4A8u0WgCk=
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 7/7/05, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> 
> On 7 Jul 2005, at 17:07, David Muench wrote:
> 
> > I recieved this reply to my request for help with ivtv on Xen on the
> > ivtv-devel list. I don't feel very well qualified to respond to
> > Andrew. Can I ask what your thoughts are? Am I just out of luck?
> 
> Andrew's simply pointing out that the ivtv driver already uses the
> dma-mapping interface properly. It's good to have that confirmed. :-)
> 
> However, looking back at XenLinux's implementation of
> {dma,pci}_map_single, it is broken for multi-page buffers. It's
> surprising noone has hit a problem before now, but most devices other
> than video-capture cards you deal with only up to a page at a time.
> 
> So this is a Xen bug: I'll find some time to fix this and get back to
> you. Are you using Xen 2.0 or 3.0 (unstable)?

That's great news, I thought I was up a creek. I'm using 2.0.6. Thanks
again, I really appreciate your help.

Dave

-- 
David Muench - davemuench@xxxxxxxxx
Jabber ID: dave@xxxxxxxxxxxxxxxxxxxx

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.