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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: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2018-07-14 15:47:00 +08:00 committed by Joerg Roedel
parent cc580e4126
commit a7fc93fed9
1 changed files with 10 additions and 0 deletions
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10
drivers/iommu/intel-iommu.c
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@ -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);