iommu/vt-d: Select PCI_PRI for INTEL_IOMMU_SVM
Previously intel-iommu.c depended on CONFIG_AMD_IOMMU in an undesirable way. When CONFIG_INTEL_IOMMU_SVM=y, iommu_enable_dev_iotlb() calls PRI interfaces (pci_reset_pri() and pci_enable_pri()), but those are only implemented when CONFIG_PCI_PRI is enabled. The INTEL_IOMMU_SVM Kconfig did nothing with PCI_PRI, but AMD_IOMMU selects PCI_PRI. So if AMD_IOMMU was enabled, intel-iommu.c got the full PRI interfaces, but if AMD_IOMMU was not enabled, it got the PRI stubs. Make the iommu_enable_dev_iotlb() behavior independent of AMD_IOMMU by having INTEL_IOMMU_SVM select PCI_PRI so iommu_enable_dev_iotlb() always uses the full implementations of PRI interfaces. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Reviewed-by: Joerg Roedel <jroedel@suse.de> Acked-by: Joerg Roedel <jroedel@suse.de>
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@ -207,6 +207,7 @@ config INTEL_IOMMU_SVM
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bool "Support for Shared Virtual Memory with Intel IOMMU"
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depends on INTEL_IOMMU && X86
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select PCI_PASID
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select PCI_PRI
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select MMU_NOTIFIER
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help
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Shared Virtual Memory (SVM) provides a facility for devices
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