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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2019-05-25 13:41:24 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-05-28 10:19:00 +0200 |
| commit | d850c2ee5fe2259968e3889624ad22ea15cb4a38 (patch) | |
| tree | dbdced6663784a8c0fbb32678be5847a7faac40d /drivers/iommu | |
| parent | 73bcbdc9fa8d88db2d26d06885fb180cfe478f80 (diff) | |
| download | linux-d850c2ee5fe2259968e3889624ad22ea15cb4a38.tar.bz2 | |
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: James Sewart <jamessewart@arista.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 3995afc59c28..bc7cbe0a6ac6 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -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(®->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); |