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

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
......@@ -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);
......
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