diff options
| author |   Lu Baolu <baolu.lu@linux.intel.com> | 2018-07-14 15:47:00 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2018-07-20 14:44:25 +0200 |
| commit | a7fc93fed94b173e2f9815d50f4024161b0a39ae (patch) | |
| tree | 212a2223687735a6042d01bb2dd104cd705aeeba /drivers/iommu/intel-iommu.c | |
| parent | iommu/vt-d: Per PCI device pasid table interfaces (diff) | |
| download | linux-dev-a7fc93fed94b173e2f9815d50f4024161b0a39ae.tar.xz linux-dev-a7fc93fed94b173e2f9815d50f4024161b0a39ae.zip | |
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/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 10 |
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); |