From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenni Lund Subject: Re: PCI passthrough resource remapping Date: Wed, 31 Mar 2010 13:43:38 +0200 Message-ID: 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 Cc: Alexander Graf , kvm list To: Chris Wright Return-path: Received: from asmtp.unoeuro.com ([195.41.131.37]:54763 "HELO asmtp.unoeuro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756396Ab0CaLnm (ORCPT ); Wed, 31 Mar 2010 07:43:42 -0400 Received: from localhost (localhost [127.0.0.1]) by asmtp.unoeuro.com (Postfix) with ESMTP id 00F1636DD69 for ; Wed, 31 Mar 2010 13:43:40 +0200 (CEST) Received: from asmtp.unoeuro.com ([127.0.0.1]) by localhost (asmtp.unoeuro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jNDknaGUg2SH for ; Wed, 31 Mar 2010 13:43:39 +0200 (CEST) Received: from mail-ww0-f46.google.com (mail-ww0-f46.google.com [74.125.82.46]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by asmtp.unoeuro.com (Postfix) with ESMTP id C412336DD5B for ; Wed, 31 Mar 2010 13:43:39 +0200 (CEST) Received: by wwb17 with SMTP id 17so327798wwb.19 for ; Wed, 31 Mar 2010 04:43:39 -0700 (PDT) In-Reply-To: <3b1f68ef1003301747k675f0de0t1b8dec8581e3f4b2@mail.gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: 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 Best Regards Kenni