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Commit a7fc93fe authored by Lu Baolu's avatar Lu Baolu Committed by Joerg Roedel
Browse files

iommu/vt-d: Allocate and free pasid table 



This patch allocates a PASID table for a PCI device at the time
when the dmar dev_info is attached to dev->archdata.iommu, and
free it in the opposite case.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: default avatarLiu Yi L <yi.l.liu@intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent cc580e41

drivers/iommu/intel-iommu.c

+10 −0
Original line number Diff line number Diff line
@@ -2509,6 +2509,15 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, 
	list_add(&info->global, &device_domain_list);

	if (dev)

		dev->archdata.iommu = info;



	if (dev && dev_is_pci(dev) && info->pasid_supported) {

		ret = intel_pasid_alloc_table(dev);

		if (ret) {

			__dmar_remove_one_dev_info(info);

			spin_unlock_irqrestore(&device_domain_lock, flags);

			return NULL;

		}

	}

	spin_unlock_irqrestore(&device_domain_lock, flags);



	if (dev && domain_context_mapping(domain, dev)) {
@@ -4843,6 +4852,7 @@ static void __dmar_remove_one_dev_info(struct device_domain_info *info) 
	if (info->dev) {

		iommu_disable_dev_iotlb(info);

		domain_context_clear(iommu, info->dev);

		intel_pasid_free_table(info->dev);

	}



	unlink_domain_info(info);