diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index ff5a30a94679..1ff45b2d03ab 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2500,6 +2500,12 @@ static int domain_setup_first_level(struct intel_iommu *iommu, flags); } +static bool dev_is_real_dma_subdevice(struct device *dev) +{ + return dev && dev_is_pci(dev) && + pci_real_dma_dev(to_pci_dev(dev)) != to_pci_dev(dev); +} + static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, int bus, int devfn, struct device *dev, @@ -4975,7 +4981,8 @@ static void __dmar_remove_one_dev_info(struct device_domain_info *info) PASID_RID2PASID, false); iommu_disable_dev_iotlb(info); - domain_context_clear(iommu, info->dev); + if (!dev_is_real_dma_subdevice(info->dev)) + domain_context_clear(iommu, info->dev); intel_pasid_free_table(info->dev); } |