From mboxrd@z Thu Jan 1 00:00:00 1970 From: Javier Marcet Subject: Re: Xen 4.2.0-rc4 issues with DVB tuner Date: Mon, 17 Sep 2012 22:09:29 +0200 Message-ID: References: <20120917142851.GB14012@phenom.dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120917142851.GB14012@phenom.dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Konrad Rzeszutek Wilk Cc: Xen Devel Mailing list List-Id: xen-devel@lists.xenproject.org On Mon, Sep 17, 2012 at 4:28 PM, Konrad Rzeszutek Wilk wrote: >> >> I wonder whether it would work within a DomU with the PCIe tuner >> >> passed through. >> > >> > I've a 4 channel security card passed in and it works nicely. The >> > trick is that you need 'iommu=soft' on the domU command line. >> >> All right. But is it normal that it does not work under the dom0? > > No. PV domU and PV dom0 are pretty much the same in the way of handling > interrupts, ports, etc. > > If you crank up the debug level of the kernel (debug loglevel=8) and > of the driver do you get anything obvious? What about the questions > I've asked? Booting with 'debug loglevel=8' as kernel parameters I still get no errors or warnings anywhere. I'm out of ideas and I don't have any other PCIe tuner card to try. It is looking more and more as a cx23885 (the module the card uses) issue. It is really odd since I you get some data, but just like if there was very poor reception, more noise than signal. If you can think of some other way to debug this, I'll try it. -- Javier Marcet