On Fri, Oct 04, 2019 at 09:55:54PM +0100, Chris Wilson wrote: > [ 2.073922] DMAR: ACPI device "INT33C2:00" under DMAR at fed91000 as > 00:15.1 > [ 2.073983] DMAR: ACPI device "INT33C3:00" under DMAR at fed91000 as > 00:15.2 > [ 2.074027] DMAR: ACPI device "INT33C0:00" under DMAR at fed91000 as > 00:15.3 > [ 2.074072] DMAR: ACPI device "INT33C1:00" under DMAR at fed91000 as > 00:15.4
I think just using generic_device_group() is not enough here. You need to mach the device-id of the ACPI device with the PCI hierarchy and find the right group there. You can look at the AMD IOMMU drivers acpihid_device_group() function for some inspiration. Regards, Joerg _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu