Re: kvm PCI assignment & VFIO ramblings

On 08/22/2011 03:55 PM, Roedel, Joerg wrote:

On Mon, Aug 22, 2011 at 08:42:35AM -0400, Avi Kivity wrote:

quoted

 On 08/22/2011 03:36 PM, Roedel, Joerg wrote:
 >  On the AMD IOMMU side this information is stored in the IVRS ACPI table.
 >  Not sure about the VT-d side, though.

 I see.  There is no sysfs node representing it?

No. It also doesn't exist as a 'struct pci_dev'. This caused problems in
the AMD IOMMU driver in the past and I needed to fix that. There I know
that from :)

Well, too bad.

quoted

 I'd rather not add another meaningless identifier.

Well, I don't think its really meaningless, but we need some way to
communicate the information about device groups to userspace.

I mean the contents of the group descriptor.  There are enough 42s in 
the kernel, it's better if we can replace a synthetic number with 
something meaningful.

-- 
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