[Xen-devel] VT-d on Intel S3420GPLX

["Michael A. Collins" <mike@xxxxxxxxxxx>]

I have successfully booted xen on Fedora 14 x86_64 with iommu=force on 
the kernel line, I can unbind a pci device and rebind to pci-stub and 
see it with xm pci-list-assignable-devices.  That's cool.  Now I have an 
Intel 82576 dual-port ET Adapter that supports SR-IOV and started 
configuring everything to enable it's virtual functions:
added pci_pt_e820_access=on to the module line that contains the 
vmlinuz
created igb.conf under /etc/modprobe.d with options igb max_vfs=7
added blacklist igbvf to /etc/modprobe.d/blacklist.conf

I was under the impression that I should see some kind of message about 
MMCONFIG in xm dmesg, but there isn't anything.  I do a xm dmesg | grep 
-i pci and it finds nothing with MMCONFIG.  I guess my next question is 
what do I do next?  How do I troubleshoot further?  Below is the VT-d 
messages from xm dmesg:
(XEN) Intel VT-d Snoop Control supported.
(XEN) Intel VT-d DMA Passthrough not supported.
(XEN) Intel VT-d Queued Invalidation supported.
(XEN) Intel VT-d Interrupt Remapping not supported.

Does MMCONFIG have something to do with the fact the Interrupt 
Remapping not supported message is displayed?
Mike


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