From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Graf Subject: Re: PCI passthrough resource remapping Date: Wed, 31 Mar 2010 14:24:50 +0200 Message-ID: <4BB33F12.1060908@suse.de> References: <3b1f68ef1003251937k52a0faf8t9d2458f7f0f8eaaa@mail.gmail.com> <3b1f68ef1003291600t1175f794vd3f47cdafca48a8@mail.gmail.com> <20100329234752.GM3204@x200.localdomain> <3b1f68ef1003291721v6fcb01edha4f0424ba0ab24f8@mail.gmail.com> <20100330020805.GS3204@x200.localdomain> <3b1f68ef1003301527p2dd9928alf2f6ead85d678634@mail.gmail.com> <20100330235838.GU11934@x200.localdomain> <3b1f68ef1003301747k675f0de0t1b8dec8581e3f4b2@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Chris Wright , kvm list To: Kenni Lund Return-path: Received: from cantor2.suse.de ([195.135.220.15]:55119 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757227Ab0CaMYx (ORCPT ); Wed, 31 Mar 2010 08:24:53 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: Kenni Lund wrote: > 2010/3/31 Kenni Lund : > >> Booting the guest and tuning to a DVB-T channel _works_ !!! :-D Thanks >> a lot for your help...I have one more question, though: If I have two >> devices (like the ivtv tuner and the USB card) and they share an IRQ, >> if I then assign BOTH of them to the same guest, will it then work? >> >> Alexander, the patch works, I hope to see it in a stable release in >> the near future ;) >> > > Unfortunately, I have a correction to this :( It _almost_ works. I had > some video/audio artifacts which I though was caused by bad reception, > but after switching the DVB-T tuner back and forth between the PCI USB > card and a laptop, it got clear to me, that this was a passthrough > issue. I get no errors in dmesg on the host or in the guest. > > I recorded a short videoclip which illustrates the issue: > https://docs.google.com/leaf?id=0B-_nZameGeN-NDk4YzQ3N2EtMmEzMi00NTU4LWFjMjgtNzkxMzcxYzg2MTM1&hl=en > Hrm, I'm not sure these would be related to the small BAR region patch. It looks more like a timing issue. Alex