| commit | 9bf49e36d7183a170a9906d19acc5254818fc574 | [log] [tgz] |
|---|---|---|
| author | Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> | Thu Sep 05 14:31:42 2019 -0500 |
| committer | Bjorn Helgaas <bhelgaas@google.com> | Tue Oct 15 16:39:09 2019 -0500 |
| tree | 55cc33da51fd07b665012f45d26a54971c5e47c4 | |
| parent | 8cbb8a9374a271099bacdc890fb16d374261332b [diff] |
PCI/ATS: Handle sharing of PF PRI Capability with all VFs Per PCIe r5.0, sec 9.3.7.11, VFs must not implement the PRI Capability. If the PF implements PRI, it is shared by the VFs. Since VFs don't have a PRI Capability, pci_enable_pri() always failed, which caused IOMMU setup to fail. Update the PRI interfaces so for VFs they reflect the state of the PF PRI. [bhelgaas: rebase without pri_cap caching, commit log] Suggested-by: Ashok Raj <ashok.raj@intel.com> Link: https://lore.kernel.org/r/b971e31f8695980da8e4a7f93e3b6a3edba3edaa.1567029860.git.sathyanarayanan.kuppuswamy@linux.intel.com Link: https://lore.kernel.org/r/20190905193146.90250-2-helgaas@kernel.org Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Ashok Raj <ashok.raj@intel.com> Cc: Keith Busch <keith.busch@intel.com>