iommu bitmap instead of iommu pointer in dmar_domain
In order to support assigning multiple devices from different iommus to a domain, iommu bitmap is used to keep all iommus the domain are related to. Signed-off-by: NWeidong Han <weidong.han@intel.com> Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
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