AMD Ryzen: pci 0000:00:00.2: can't derive routing for PCI INT A
Bug #1881121 reported by
Paul Menzel
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Dell Sputnik |
New
|
Undecided
|
Unassigned | ||
Bug Description
On the Dell OptiPlex 5055 Ryzen CPU/0P03DX, BIOS 1.1.20 05/31/2019 (AGESA SummitPI-AM4 1.0.0.7a), Linux (tested with Linux 5.7-rc7) warns about incorrect routing information regarding the IOMMU in the ACPI tables (`drivers/
[ 0.870894] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported
[ 0.871377] pci 0000:00:00.2: can't derive routing for PCI INT A
[ 0.871732] pci 0000:00:00.2: PCI INT A: not connected
This seems to be a general AMD Ryzen firmware problem [1], and probably needs to be fixed in AMD’s platform initialization code AGESA.
It’d be great if Linux wouldn’t have to warn about things on Dell systems.
[1]: https:/
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