From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: pci passthrough fail on fedora 15/kvm/qemu/virt-manager hosting win 7 (all 64 bit) Date: Wed, 21 Sep 2011 13:18:50 -0600 Message-ID: <1316632731.4443.97.camel@bling.home> References: <1316536573.55391.YahooMailNeo@web120527.mail.ne1.yahoo.com> <1316625664.30766.YahooMailNeo@web120529.mail.ne1.yahoo.com> <1316625835.28939.YahooMailNeo@web120529.mail.ne1.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: "kvm@vger.kernel.org" To: Erik Flister Return-path: Received: from mx1.redhat.com ([209.132.183.28]:10244 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752479Ab1IUTSv (ORCPT ); Wed, 21 Sep 2011 15:18:51 -0400 In-Reply-To: <1316625835.28939.YahooMailNeo@web120529.mail.ne1.yahoo.com> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, 2011-09-21 at 10:23 -0700, Erik Flister wrote: > i posted this to virt-tools but got no replies, hoping you guys can help me. :) > > >>>AMD > phenom II X6 1075T proc > >>>ASUS M4A87TD mobo Google says this is an AMD 870 chipset, so you do not have AMD IOMMU (AMD-Vi) support :( > >>>> lspci > >>> > >>>02:06.0 Unassigned class [ff00]: National Instruments PCI-6110 > >>>02:07.0 Serial controller: NetMos Technology PCI 9865 Multi-I/O Controller > >>>02:07.1 Serial controller: NetMos Technology PCI 9865 Multi-I/O Controller > >>>02:07.2 Parallel controller: NetMos Technology PCI 9865 Multi-I/O Controller > >>> > >>>> lspci -n > >>> > >>>02:06.0 ff00: 1093:14e0 > >>>02:07.0 0700: 9710:9865 > >>>02:07.1 0700: 9710:9865 > >>>02:07.2 0701: 9710:9865 > >>> > >>>> virsh nodedev-list | grep pci > >>> > >>>pci_0000_02_06_0 > >>>pci_0000_02_07_0 > >>>pci_0000_02_07_1 > >>>pci_0000_02_07_2 > >>> > >>>> sudo virsh > nodedev-dettach > pci_0000_02_06_0 > >>>Device pci_0000_02_06_0 dettached > >>> > >>> > >>>but then, after adding it to the guest and trying to boot it, i get: > >>> > >>>Error starting domain: this function is not supported by the > >>>connection driver: Unable to reset PCI device 0000:02:06.0: this > >>>function is not supported by the connection driver: Active > >>>0000:02:07.0 devices on bus with 0000:02:06.0, not doing bus reset This is probably telling you that the device you want to assign doesn't support a reset mechanism (FLR or D3hot), so it wants to do a secondary bus reset, but there are other devices on the same bus. > >>>if i disable the other devices on bus 02 and add them to the guest: > >>>> sudo virsh nodedev-dettach pci_0000_02_07_0 > >>>Device pci_0000_02_07_0 dettached > >>> > >>>> sudo virsh nodedev-dettach pci_0000_02_07_1 > >>>Device pci_0000_02_07_1 dettached > >>> > >>>> sudo virsh nodedev-dettach pci_0000_02_07_2 > >>>Device pci_0000_02_07_2 dettached > >>> > >>>i then get this error on booting the guest (but with the same stack > >>>trace as above): > >>> > >>>Error starting domain: cannot send monitor command > >>>'{"execute":"qmp_capabilities"}': Connection reset by peer > >>> > >>>and then networking fails on the host until i reboot, and fedora won't > >>>even shutdown all the way (i have to do a hard reboot by holding down > >>>the power button). > >>> > >>>any idea how i can fix this? why isn't detaching the device > >>>automatically done when it is added to the guest? even if i get this > >>>working, it seems i will > have to detach stuff every time i reboot the > >>>host? finally, in this case, i actually do want to give everything on > >>>bus 02 to the guest, but what if i didn't? Getting it working seems like it's going to require new hardware since you don't have a device assignment capable IOMMU. Thanks, Alex