change P2P domain flags
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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@ -200,6 +200,9 @@ static inline bool dma_pte_present(struct dma_pte *pte)
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return (pte->val & 3) != 0;
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return (pte->val & 3) != 0;
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}
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}
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/* devices under the same p2p bridge are owned in one domain */
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#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 < 0)
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struct dmar_domain {
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struct dmar_domain {
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int id; /* domain id */
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int id; /* domain id */
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struct intel_iommu *iommu; /* back pointer to owning iommu */
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struct intel_iommu *iommu; /* back pointer to owning iommu */
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@ -214,8 +217,7 @@ struct dmar_domain {
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/* adjusted guest address width, 0 is level 2 30-bit */
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/* adjusted guest address width, 0 is level 2 30-bit */
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int agaw;
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int agaw;
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#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
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int flags; /* flags to find out type of domain */
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int flags;
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};
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};
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/* PCI domain-device relationship */
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/* PCI domain-device relationship */
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@ -1574,7 +1576,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
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info->dev = NULL;
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info->dev = NULL;
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info->domain = domain;
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info->domain = domain;
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/* This domain is shared by devices under p2p bridge */
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/* This domain is shared by devices under p2p bridge */
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domain->flags |= DOMAIN_FLAG_MULTIPLE_DEVICES;
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domain->flags |= DOMAIN_FLAG_P2P_MULTIPLE_DEVICES;
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/* pcie-to-pci bridge already has a domain, uses it */
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/* pcie-to-pci bridge already has a domain, uses it */
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found = NULL;
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found = NULL;
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