Blame patches.drivers/iommu-vt-d-handle-pci-bridge-rmrr-device-scopes-in-intel_iommu_get_resv_regions
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Joerg Roedel |
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From: Eric Auger <eric.auger@redhat.com>
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Joerg Roedel |
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Date: Mon, 3 Jun 2019 08:53:34 +0200
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Joerg Roedel |
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Subject: iommu/vt-d: Handle PCI bridge RMRR device scopes in
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Joerg Roedel |
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intel_iommu_get_resv_regions
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Git-commit: 3855ba2d834d8f7727b7f992ff781fa66cc09f96
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Patch-mainline: v5.3-rc1
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References: bsc#1140960
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Joerg Roedel |
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Joerg Roedel |
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In the case the RMRR device scope is a PCI-PCI bridge, let's check
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Joerg Roedel |
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the device belongs to the PCI sub-hierarchy.
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Fixes: 0659b8dc45a6 ("iommu/vt-d: Implement reserved region get/put callbacks")
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
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Joerg Roedel |
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Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Joerg Roedel |
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---
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drivers/iommu/intel-iommu.c | 3 ++-
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Joerg Roedel |
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1 file changed, 2 insertions(+), 1 deletion(-)
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Joerg Roedel |
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--- a/drivers/iommu/intel-iommu.c
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+++ b/drivers/iommu/intel-iommu.c
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@@ -5313,7 +5313,8 @@ static void intel_iommu_get_resv_regions
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struct iommu_resv_region *resv;
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size_t length;
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Joerg Roedel |
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- if (i_dev != device)
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Joerg Roedel |
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+ if (i_dev != device &&
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+ !is_downstream_to_pci_bridge(device, i_dev))
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continue;
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Joerg Roedel |
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length = rmrr->end_address - rmrr->base_address + 1;
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