On 08/22/2011 03:55 PM, Roedel, Joerg wrote:
On Mon, Aug 22, 2011 at 08:42:35AM -0400, Avi Kivity wrote: > 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.
> 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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