[Xen-users] PCI pass through issue

["Zhiqiang Huang" <hzqtc@xxxxxxxxxxx>]

Hi, all

 

I’m trying SRIOV with Xen but failed to pass through virtual function of SRIOV to dom-U.

My platform:

Xen-unstable 4.2

Pvops Dom-0 kernel 2.6.32.35

CentOS 5.4 Dom-0

CentOS 5.4 HVM Dom-U

 

And follow VtdHowto wiki page, my steps are:

First, bind the virtual function to pci-stub. After that, check the assignable virtual function devices:

[root@localhost ~]# xm pci-list-assignable-devices

0000:07:10.0

0000:07:10.1

 

Next, attach virtual function to dom-U using device hot-plug:

[root@localhost ~]# xm pci-attach VM2 07:10.0

Error: Timed out waiting for device model action

Usage: xm pci-attach [-o|--options=<opt>] <Domain> <domain:bus:slot.func> [virtual slot]

 

Insert a new pass-through pci device.

 

And get different error message when repeating the command:

[root@localhost ~]# xm pci-attach VM2 07:10.0

Error: Failed to assign device to IOMMU (0000:07:10.0@100,msitranslate=1,power_mgmt=0)

Usage: xm pci-attach [-o|--options=<opt>] <Domain> <domain:bus:slot.func> [virtual slot]

 

Insert a new pass-through pci device.

 

And I notice the ‘xm dmesg’ contains the following lines:

(XEN) Intel VT-d Snoop Control enabled.

(XEN) Intel VT-d Dom0 DMA Passthrough not enabled.

(XEN) Intel VT-d Queued Invalidation enabled.

(XEN) Intel VT-d Interrupt Remapping enabled.

(XEN) I/O virtualisation enabled

 

Can anyone help me with this issue? The HVM config file and dom-0 kernel config file are in the attachments. Check them out. J

 

Thanks,

Zhiqiang

config
Description: Binary data

VM_NEW.hvm
Description: Binary data

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