| commit | 2b0ae7cc3bfc3fae124c25870f41291c670b4549 | [log] [tgz] |
|---|---|---|
| author | Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> | Thu Sep 05 14:31:43 2019 -0500 |
| committer | Bjorn Helgaas <bhelgaas@google.com> | Tue Oct 15 16:39:09 2019 -0500 |
| tree | d7697f2f7d2004feff281a03731339469f453903 | |
| parent | 9bf49e36d7183a170a9906d19acc5254818fc574 [diff] |
PCI/ATS: Handle sharing of PF PASID Capability with all VFs Per PCIe r5.0, sec 9.3.7.14, if a PF implements the PASID Capability, the PF PASID configuration is shared by its VFs. VFs must not implement their own PASID Capability. Since VFs don't have a PASID Capability, pci_enable_pasid() always failed, which caused IOMMU setup to fail. Update the PASID interfaces so for VFs they reflect the state of the PF PASID. [bhelgaas: rebase without pasid_cap caching, commit log] Suggested-by: Ashok Raj <ashok.raj@intel.com> Link: https://lore.kernel.org/r/8ba1ac192e4ac737508b6ac15002158e176bab91.1567029860.git.sathyanarayanan.kuppuswamy@linux.intel.com Link: https://lore.kernel.org/r/20190905193146.90250-3-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>