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authorLu Baolu <baolu.lu@linux.intel.com>2018-07-14 15:47:00 +0800
committerJoerg Roedel <jroedel@suse.de>2018-07-20 14:44:25 +0200
commita7fc93fed94b173e2f9815d50f4024161b0a39ae (patch)
tree212a2223687735a6042d01bb2dd104cd705aeeba /drivers/iommu
parentcc580e41260dbf1a46269235f1f2b572137d9d03 (diff)
downloadlinux-a7fc93fed94b173e2f9815d50f4024161b0a39ae.tar.bz2
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>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel-iommu.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 211925a75fb4..2d68e849a892 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -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);