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| author | Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> | 2019-09-05 22:31:43 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-10-16 00:39:09 +0300 |
| commit | 2b0ae7cc3bfc3fae124c25870f41291c670b4549 (patch) | |
| tree | d7697f2f7d2004feff281a03731339469f453903 /tools/perf/scripts/python | |
| parent | 9bf49e36d7183a170a9906d19acc5254818fc574 (diff) | |
| download | linux-2b0ae7cc3bfc3fae124c25870f41291c670b4549.tar.xz | |
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>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions