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iommu/vt-d: Handle PCI bridge RMRR device scopes in intel_iommu_get_resv_regions

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In the case the RMRR device scope is a PCI-PCI bridge, let's check
the device belongs to the PCI sub-hierarchy.

Fixes: 0659b8dc45 ("iommu/vt-d: Implement reserved region get/put callbacks")

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Eric Auger 2019-06-03 08:53:34 +02:00 committed by Joerg Roedel
parent e143fd4598
commit 3855ba2d83
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/intel-iommu.c
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@ -5426,7 +5426,8 @@ static void intel_iommu_get_resv_regions(struct device *device,
struct iommu_resv_region *resv;
size_t length;
if (i_dev != device)
if (i_dev != device &&
!is_downstream_to_pci_bridge(device, i_dev))
continue;
length = rmrr->end_address - rmrr->base_address + 1;