Merge branch 'pci/controller/vmd'

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- Support device ID 0x28C1 and assume that BIOS has already enumerated the
  hierarchy below VMD and stored bus range info for OS to use (Nirmal
  Patel)

- Add support for VMCONFIG BUS_RESTRICT_CFG=3, which makes it possible to
  enumerate downstream devices on Intel Arrow Lake-HX systems and probably
  others (Ali Alaei)

- Observe _OSC negotiation for VMD hierarchy only when running on bare
  metal, not when running in a VM (Nirmal Patel)

- Add Nova Lake (NVL) and Dunlow (DNL) Device IDs (Szymon Durawa)

* pci/controller/vmd:
  PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs
  PCI: vmd: Only copy root bridge _OSC control flags in bare metal OS
  PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX
  PCI: vmd: Add feature to scan BIOS-enumerated devices

...

This commit is contained in:

Bjorn Helgaas 2026-08-21 16:40:47 -05:00

parent b130a2caf5 55aa45154f

commit e0aba454f8

2 changed files with 169 additions and 35 deletions

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203

drivers/pci/controller/vmd.c

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1

include/linux/pci_ids.h

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