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| author | Ashok Raj <ashok.raj@intel.com> | 2020-07-24 00:37:29 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-07-24 16:50:41 +0200 |
| commit | 3f9a7a13fe4cb6e119e4e4745fbf975d30bfac9b (patch) | |
| tree | 35ee302aafcea3a116d369053c878bcbfbb4b09f /drivers/pci/quirks.c | |
| parent | xen: Remove redundant initialization of irq (diff) | |
| download | linux-3f9a7a13fe4cb6e119e4e4745fbf975d30bfac9b.tar.xz linux-3f9a7a13fe4cb6e119e4e4745fbf975d30bfac9b.zip | |
PCI/ATS: Add pci_pri_supported() to check device or associated PF
For SR-IOV, the PF PRI is shared between the PF and any associated VFs, and
the PRI Capability is allowed for PFs but not for VFs. Searching for the
PRI Capability on a VF always fails, even if its associated PF supports
PRI.
Add pci_pri_supported() to check whether device or its associated PF
supports PRI.
[bhelgaas: commit log, avoid "!!"]
Fixes: b16d0cb9e2fc ("iommu/vt-d: Always enable PASID/PRI PCI capabilities before ATS")
Link: https://lore.kernel.org/r/1595543849-19692-1-git-send-email-ashok.raj@intel.com
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Cc: stable@vger.kernel.org # v4.4+
Diffstat (limited to 'drivers/pci/quirks.c')
0 files changed, 0 insertions, 0 deletions