Sorry to duplicate my issues onto the list - I thought I had looked
through this thread before and seen a different error, but apparently
Adam and I are running into much the same thing. I'm seeing exactly the
same "Failed to assign device to IOMMU" along with the "Device not owned
by PCI Back End or pci-stub" in these scenarios. I have not gone back
to previous versions, but I'm running openSuSE 11.3, so it's not quite
that easy for me to go back to 3.3.x on that platform.
-Nick
On Thu, 2010-10-21 at 16:16 +0100, Adam Moss wrote:
> Hi all,
>
> I have worked with Michael on this problem, here are some further
> details that may help troubleshoot the issue:
>
> The error seen when starting DomU is in fact "Failed to assign device
> to IOMMU".
>
> We're using the following system setup for our Xen environment:
>
> SunBlade 6000 chassis
> SunBlade X6270 blade
> SuSE ES11 SP1 64bit Dom0 (Xen 4.0.0 - Kernel 2.6.32.12-0.7-xen )
> SuSE ES11 SP1 64bit DomU
>
> The lspci -vt output at Dom0 looks like this:
>
> ###
> -[0000:00]-+-00.0 Intel Corporation 5520 I/O Hub to ESI Port
> +-01.0-[0000:01-06]----00.0 LSI Logic / Symbios Logic
> SAS1068E PCI-Express Fusion-MPT SAS
> +-03.0-[0000:07-0c]--
> +-05.0-[0000:0d-12]----00.0-[0000:0e]----00.0 Freescale
> Semiconductor Inc Device 0091
> +-07.0-[0000:13-18]--
> +-09.0-[0000:19-1e]--
> +-13.0 Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC
> Interrupt Controller
> +-14.0 Intel Corporation 5520/5500/X58 I/O Hub System
> Management Registers
> +-14.1 Intel Corporation 5520/5500/X58 I/O Hub GPIO and
> Scratch Pad Registers
> +-14.2 Intel Corporation 5520/5500/X58 I/O Hub Control
> Status and RAS Registers
> +-14.3 Intel Corporation 5520/5500/X58 I/O Hub Throttle
> Registers
> +-16.0 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.1 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.2 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.3 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.4 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.5 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.6 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-16.7 Intel Corporation 5520/5500/X58 Chipset QuickData
> Technology Device
> +-1a.0 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #4
> +-1a.1 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #5
> +-1a.2 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #6
> +-1a.7 Intel Corporation 82801JI (ICH10 Family) USB2 EHCI
> Controller #2
> +-1c.0-[0000:1f]--+-00.0 Intel Corporation 82575EB Gigabit
> Network Connection
> | \-00.1 Intel Corporation 82575EB Gigabit
> Network Connection
> +-1d.0 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #1
> +-1d.1 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #2
> +-1d.2 Intel Corporation 82801JI (ICH10 Family) USB UHCI
> Controller #3
> +-1d.7 Intel Corporation 82801JI (ICH10 Family) USB2 EHCI
> Controller #1
> +-1e.0-[0000:20]----05.0 ASPEED Technology, Inc. ASPEED
> Graphics Family
> +-1f.0 Intel Corporation 82801JIR (ICH10R) LPC Interface
> Controller
> +-1f.2 Intel Corporation 82801JI (ICH10 Family) SATA AHCI
> Controller
> \-1f.3 Intel Corporation 82801JI (ICH10 Family) SMBus
> Controller
> ###
>
> The following commands are used to hide the single device
> (0000:0e:00.0) we want to pass back to DomU:
>
> ###
> modprobe pciback
>
> echo -n "0000:0e:00.0" > /sys/bus/pci/drivers/pciback/new_slot
> echo -n "0000:0e:00.0" > /sys/bus/pci/drivers/pciback/bind
> ###
>
> After this the device is shown correctly in the assignable devices
> list.
>
> ###
> SunBlade2:/etc/xen/vm # xm pci-list-assignable-devices
> 0000:0e:00.0
> ###
>
> The DomU is then started/created using the following configuration
> file:
>
> ###
> import os, re
> arch = os.uname()[4]
> if re.search('64', arch):
> arch_libdir = 'lib64'
> else:
> arch_libdir = 'lib'
> kernel = "/usr/lib/xen/boot/hvmloader"
> builder = 'hvm'
> device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
> name = "node1"
> vcpus = 1
> memory = 1024
> pae = 1
> acpi = 1
> apic = 1
>
> boot = "dc"
> vif =['mac=00:11:22:33:00:04, bridge=br0, model=e1000']
> disk =['phy:sda5,hda,w']
>
> on_poweroff = 'destroy'
> on_reboot = 'restart'
> on_crash = 'restart'
>
> snapshot = 0
> sdl = 0
> opengl = 1
> vnc = 1
> vnclisten = "127.0.0.1"
> vncdisplay = 4
> vncunused = 0
> vncpasswd = ''
> nographic = 0
> stdvga = 0
> serial = 'pty'
>
> pci = ['0000:0e:00.0']
> ###
>
> After running the create command the "failed to assign to IOMMU" error
> is seen:
>
> ###
> SunBlade2:/etc/xen/vm # xm create node1.conf
> Using config file "./node1.conf".
> Error: Failed to assign device to IOMMU
> (0000:0e:00.0@100,msitranslate=1,power_mgmt=0)
> ###
>
> We have enabled the debug traces (iommu=verbose loglvl=all
> guest_loglvl=all) which show the following at the point of failure
> (Please ignore the time stamps):
>
> /var/log/messages
> --------------------------
>
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.751322]
> (cdrom_add_media_watch()
> file=/usr/src/packages/BUILD/kernel-xen-2.6.32.12/linux-2.6.32/drivers/xen/blkback/cdrom.c,
> line=108) nodename:backend/vbd/2/768
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.751327] (cdrom_is_type()
> file=/usr/src/packages/BUILD/kernel-xen-2.6.32.12/linux-2.6.32/drivers/xen/blkback/cdrom.c,
> line=95) type:0
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.936015] pcieport
> 0000:00:05.0: AER: Uncorrected (Non-Fatal) error received: id=0028
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.023732] pcieport
> 0000:00:05.0: PCIE Bus Error: severity=Uncorrected (Non-Fatal),
> type=Transaction Layer, id=0028(Requester ID)
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.023737] pcieport
> 0000:00:05.0: device [8086:340c] error
> status/mask=00004000/00000000
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.023742] pcieport
> 0000:00:05.0: [14] Completion Timeout (First)
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024193] pcieport
> 0000:00:05.0: broadcast error_detected message
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024198] pciback 0000:0e:00.0:
> pciback device is not found/assigned
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024201] pcieport
> 0000:00:05.0: broadcast mmio_enabled message
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024203] pciback 0000:0e:00.0:
> pciback device is not found/assigned
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024205] pcieport
> 0000:00:05.0: broadcast resume message
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024208] pciback 0000:0e:00.0:
> pciback device is not found/assigned
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024213] pcieport
> 0000:00:05.0: AER driver successfully recovered
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024216] pcieport
> 0000:00:05.0: AER: Uncorrected (Non-Fatal) error received: id=0028
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024305] pcieport
> 0000:00:05.0: can't find device of ID0028
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024307] pcieport
> 0000:00:05.0: AER: Uncorrected (Non-Fatal) error received: id=0028
> Mar 10 02:57:05 SunBlade2 kernel: [ 1496.024395] pcieport
> 0000:00:05.0: can't find device of ID0028
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.587191] device tap2.0 entered
> promiscuous mode
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.587205] br0: port 3(tap2.0)
> entering forwarding state
> Mar 10 02:57:05 SunBlade2 kernel: [ 1495.771897] br0: port 3(tap2.0)
> entering disabled state
> Mar 10 02:57:06 SunBlade2 kernel: [ 1495.959814] device tap2.0 left
> promiscuous mode
>
> /var/log/xen/xend.log
> ----------------------------
>
> [2011-03-10 02:58:42 5613] DEBUG (XendDomainInfo:825)
> XendDomainInfo.hvm_pci_device_insert_dev:
> 0000:0e:00.0@100,msitranslate=1,power_mgmt=0
> [2011-03-10 02:58:42 5613] ERROR (XendDomainInfo:2957)
> XendDomainInfo.initDomain: exception occurred
> Traceback (most recent call last):
> File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
> line 2949, in _initDomain
> self._createDevices()
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 2440, in _createDevices
> self.pci_device_configure_boot()
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 641, in pci_device_configure_boot
> self.pci_device_configure(dev_sxp, first_dev = first)
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 934, in pci_device_configure
> vdevfn = self.hvm_pci_device_insert(dev_config)
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 800, in hvm_pci_device_insert
> return self.hvm_pci_device_insert_dev(new_dev)
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 828, in hvm_pci_device_insert_dev
> raise VmError("Failed to assign device to IOMMU (%s)" % bdf_str)
> VmError: Failed to assign device to IOMMU
> (0000:0e:00.0@100,msitranslate=1,power_mgmt=0)
> [2011-03-10 02:58:42 5613] ERROR (XendDomainInfo:486) VM start failed
> Traceback (most recent call last):
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 472, in start
> XendTask.log_progress(31, 60, self._initDomain)
> File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line
> 209, in log_progress
> retval = func(*args, **kwds)
> File
> "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line
> 2960, in _initDomain
> raise exn
> VmError: Failed to assign device to IOMMU
> (0000:0e:00.0@100,msitranslate=1,power_mgmt=0)
>
>
> xm dmes
> -------------
>
> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
> input to Xen)
> (XEN) Freed 184kB init memory.
> (XEN) mtrr: type mismatch for fb000000,800000 old: write-back new:
> write-combining
> (XEN) [VT-D]iommu.c:1461: d0:PCI: unmap bdf = e:0.0
> (XEN) [VT-D]iommu.c:1332: d1:PCI: map bdf = e:0.0
> (XEN) domctl.c:853:d0 XEN_DOMCTL_assign_device: assign device (e:0.0)
> failed
> (XEN) event_channel.c:192:d0 EVTCHNOP failure: domain 1, error -22
> (XEN) [VT-D]iommu.c:1461: d0:PCI: unmap bdf = e:0.0
> (XEN) [VT-D]iommu.c:1332: d2:PCI: map bdf = e:0.0
> (XEN) domctl.c:853:d0 XEN_DOMCTL_assign_device: assign device (e:0.0)
> failed
> (XEN) [VT-D]iommu.c:1461: d0:PCI: unmap bdf = e:0.0
> (XEN) [VT-D]iommu.c:1332: d3:PCI: map bdf = e:0.0
> (XEN) domctl.c:853:d0 XEN_DOMCTL_assign_device: assign device (e:0.0)
> failed
> (XEN) [VT-D]iommu.c:1461: d0:PCI: unmap bdf = e:0.0
> (XEN) [VT-D]iommu.c:1332: d4:PCI: map bdf = e:0.0
> (XEN) domctl.c:853:d0 XEN_DOMCTL_assign_device: assign device (e:0.0)
> failed
>
> The full trace (xm dmes, xend.log) output and other relevant
> information from the system is attached.
>
> Things to note
> ===========
>
> 1) The problem still occurs if we try and hotplug the device using "xm
> pci-attach ..."
> 2) If the same hardware and software configuration is used with Xen
> 3.3.1 at Dom0 (SLES11) the problem is not seen.
> 3) We have compiled Xen 4.0.1 for SLES11 SP1 at Dom0 and still see the
> same problem.
> 4) We have tried passing back the PLX bridge device "0d:00.0"
> associated with the device as well as the device itself however we
> then see the error "Error: pci: PCI Backend and pci-stub don't own
> device 0000:0d:00.0" during DomU startup even though 0d:00.0 is shown
> in the assignable device list.
>
> Looking at recent posts this problems looks very similar to the one in
> subject "PCI Passthrough Problems/Questions" posted today.
>
> Any pointers at this stage would be great.
> Thanks,
> Adam
> ----------
> Adam Moss
>
> Adax Europe Ltd
> Email : Adam.Moss@xxxxxxxxxx
> On 21/09/2010 20:05, Michael Maher wrote:
> > Hello,
> >
> > I was wondering if anybody had any insight they could lend us on this?
> >
> > Your help would be very much appreciated,
> >
> >
> > Many Thanks,
> > Michael
> >
> >
> >
> >
> > On Thu, 2010-09-16 at 18:44 +0100, Michael Maher wrote:
> > > Hello,
> > >
> > >
> > >
> > > I?m hoping someone may be able to push us in the right direction. I?m
> > > trying to get one of our products to work with the current branch of
> > > Xen (4.0/4.0.0) but I?m hitting a problem.
> > >
> > >
> > >
> > > We are currently using Xen 3.3.2 on a Sun Blade 600 chassis (with
> > > x6270 blades) this works great.
> > >
> > >
> > >
> > > But when we upgrade to Xen 4.0/4.0.1 we get the following message when
> > > starting the DomU:
> > >
> > > Device Cannot be passed to IOMMU
> > >
> > >
> > >
> > > I understand from the release note that there were some changes made
> > > to the IOMMU/pciback pass-through in this release, does anyone have
> > > any details as to what might be going wrong?
> > >
> > >
> > >
> > > We?re using SLES11/sp1 and I?ve tried with the Novell build and
> > > compiled it myself. I also have the latest firmware for the chassis
> > > and blade from Sun, all of which show the same problem.
> > >
> > >
> > >
> > > Has anyone seen to same thing?
> > >
> > > Any help would be greatly appreciated,
> > >
> > >
> > >
> > >
> > >
> > > Many Thanks,
> > >
> > > Michael
> > >
> > >
> > > Michael Maher
> > >
> > > Adax Europe Ltd
> > >
> > > mmaher@xxxxxxxxxx
> > >
> > >
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