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Merge branch 'pci/host-vmd'

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- Save VMD's pci_dev in x86 struct pci_sysdata (Jon Derrick)

  - Add pci_real_dma_dev() for DMA aliases not on the same bus as requester
    (Jon Derrick)

  - Add IOMMU mappings for pci_real_dma_dev() (Jon Derrick)

  - Remove IOMMU sanity checks for VMD devices (Jon Derrick)

  - Remove VMD dma_map_ops overrides (Jon Derrick)

  - Remove unused X86_DEV_DMA_OPS (Christoph Hellwig)

  - Add VMD device IDs that need bus restriction mode (Sushma Kalakota)

* pci/host-vmd:
  PCI: vmd: Add two VMD Device IDs
  x86/PCI: Remove X86_DEV_DMA_OPS
  PCI: vmd: Remove dma_map_ops overrides
  iommu/vt-d: Remove VMD child device sanity check
  iommu/vt-d: Use pci_real_dma_dev() for mapping
  PCI: Introduce pci_real_dma_dev()
  x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
  x86/PCI: Add to_pci_sysdata() helper
This commit is contained in:
Bjorn Helgaas
2020-01-29 17:00:02 -06:00
parent c7417cf36a db51b4c85f
commit db83c269d2
10 changed files with 58 additions and 228 deletions
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6
drivers/pci/search.c
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@@ -32,6 +32,12 @@ int pci_for_each_dma_alias(struct pci_dev *pdev,
struct pci_bus *bus;
int ret;
/*
* The device may have an explicit alias requester ID for DMA where the
* requester is on another PCI bus.
*/
pdev = pci_real_dma_dev(pdev);
ret = fn(pdev, pci_dev_id(pdev), data);
if (ret)
return ret;