Re: [Xen-users] VT-d... I think is working?

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

Hi Daniel,

On Friday 18 July 2008, Daniel Kao wrote:
>  Hi All,
>
>  I haven't tried to pciback a device yet and setup an HVM but finally got
> to a point where I think I have VT-d working, but wanted to make sure this
> looks right from my "xm dmesg" output:
>
>  (XEN) Intel VT-d has been enabled
>
>  [snip]
>
>  (XEN) xenoprof: Initialization failed. Intel processor model 23 for P6
> class family is not supported (XEN) [VT-D]intel-iommu.c:1204:d32767
> context_context_mapping: nested PCI bridge not supported: bdf = 0:1:0
> sec_bus = 1 sub_bus = 3 (XEN) [VT-D]intel-iommu.c:1226:d32767
> domain_context_mapping:bus2bridge[2].bus != 0 (XEN)
> [VT-D]intel-iommu.c:771: iommu_page_fault: iommu->reg = ffff828bfff57000
> (XEN) [VT-D]intel-iommu.c:754: iommu_page_fault:DMA Write: DEVICE 0:2.0
> addr 0 REASON 5 (XEN) print_vtd_entries: domain_id = 7fff bdf = 0:2:0 gmfn
> = 0
>  (XEN)     hg->pgd == NULL
>  (XEN) AMD IOMMU: Disabled
>  (XEN) *** LOADING DOMAIN 0 ***
>
>  Only concerns I have are:
>
>  (XEN) xenoprof: Initialization failed. Intel processor model 23 for P6
> class family is not supported

That's nothing to do with VT-d, Xenoprof is a profiling app (e.g. for 
conducting performance analyses, etc).  Don't worry about it :-)

Cheers,
Mark

>  I have an E8400 on an Intel DQ35JO motherboard and the references to
> iommu_page_fault but I think that's just info and nothing else? 

> For 
> reference, this is on CentOS 5.2 w/custom Xen kernel I built using CentOS
> xen kernel source (2.6.18-92.1.6.el5-xen-x86_64) with Xen 3.2.1 tarball.



-- 
Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/)

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