Messages in this thread Patch in this message | | | From | Eric Auger <> | Subject | [PATCH v5 5/7] iommu/vt-d: Handle PCI bridge RMRR device scopes in intel_iommu_get_resv_regions | Date | Tue, 28 May 2019 13:50:23 +0200 |
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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: 0659b8dc45a6 ("iommu/vt-d: Implement reserved region get/put callbacks")
Signed-off-by: Eric Auger <eric.auger@redhat.com> --- drivers/iommu/intel-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 35508687f178..9302351818ab 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5496,7 +5496,8 @@ 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; -- 2.20.1
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