Re: [Xen-devel] [PATCH V2] amd iommu: re-enable iommu msi if dom0 disabled it

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.06.12 at 17:15, Wei Wang <wei.wang2@xxxxxxx> wrote:
> Am 14.06.2012 16:18, schrieb Jan Beulich:
>> Have you at all considered getting this fixed on the kernel side?
>> As I don't have direct access to any AMD IOMMU capable
>> system - can one, other than by enumerating the respective
>> PCI IDs or reading ACPI tables, reasonably easily identify the
>> devices in question (e.g. via vendor/class/sub-class or some
>> such)? That might permit skipping those in the offending kernel
>> code...
> 
> AMD IOMMUs (both v1 and v2) uses class id 08 (System Base Peripheral) 
> and sub class id 06 (IOMMU). Combined with PCI_VENDEOR_ID_AMD, this 
> should be enough to identify amd iommu device. I could send you a kernel 
> patch for review using this approach.

Yes, please.

Jan


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