From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [pvops xen/next ][iommu] attenpt to passthrough PCI-e usb controllor to PV domU: (XEN) traps.c:2309:d1 Domain attempted WRMSR 000000000000008b from 00000a07:00000000 to 00000000:00000000. Date: Mon, 22 Mar 2010 15:12:37 -0400 Message-ID: <20100322191237.GB31521@phenom.dumpdata.com> References: <1017192770.20100321221949@eikelenboom.it> <1A42CE6F5F474C41B63392A5F80372B21D641D6D@shsmsx501.ccr.corp.intel.com> <1057357311.20100322111524@eikelenboom.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1057357311.20100322111524@eikelenboom.it> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Sander Eikelenboom Cc: "xen-devel@lists.xensource.com" , "Han, Weidong" List-Id: xen-devel@lists.xenproject.org On Mon, Mar 22, 2010 at 11:15:24AM +0100, Sander Eikelenboom wrote: > Hello Weidong/Konrad, > > 1) With iommu=0, the DMAR fault is gone (of course), but > > (XEN) traps.c:2309:d1 Domain attempted WRMSR 000000000000008b from 00000a07:00000000 to 00000000:00000000. > Stays in xm-dmesg, the pv guests is booted, and lspci shows the pci device. But the device doesn't function properly. How does it not function properly? Was this related to the IOMMU error ? Did you point it out to me previously and I missed it? If so, can you resend it to me please. If the problem is with the message about needing 'swiotlb=force' to be passed, 'iommu=soft swiotlb=force' should take care of that.