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Commit d850c2ee authored by Lu Baolu's avatar Lu Baolu Committed by Joerg Roedel
Browse files

iommu/vt-d: Expose ISA direct mapping region via iommu_get_resv_regions 



To support mapping ISA region via iommu_group_create_direct_mappings,
make sure its exposed by iommu_get_resv_regions.

Signed-off-by: default avatarJames Sewart <jamessewart@arista.com>
Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 73bcbdc9

drivers/iommu/intel-iommu.c

+13 −0
Original line number Diff line number Diff line
@@ -5479,6 +5479,19 @@ static void intel_iommu_get_resv_regions(struct device *device, 
	}

	rcu_read_unlock();



#ifdef CONFIG_INTEL_IOMMU_FLOPPY_WA

	if (dev_is_pci(device)) {

		struct pci_dev *pdev = to_pci_dev(device);



		if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA) {

			reg = iommu_alloc_resv_region(0, 1UL << 24, 0,

						      IOMMU_RESV_DIRECT);

			if (reg)

				list_add_tail(&reg->list, head);

		}

	}

#endif /* CONFIG_INTEL_IOMMU_FLOPPY_WA */



	reg = iommu_alloc_resv_region(IOAPIC_RANGE_START,

				      IOAPIC_RANGE_END - IOAPIC_RANGE_START + 1,

				      0, IOMMU_RESV_MSI);