From: Jacob Pan <jacob.jun....@linux.intel.com>
Add a check during SVM bind to ensure CPU and IOMMU hardware capabilities
are met.
Signed-off-by: Jacob Pan <jacob.jun....@linux.intel.com>
Reviewed-by: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Lu Baolu <baolu...@linux.intel.com>
---
drivers/iommu/intel-svm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index e4a5d542b84f..48205ab1fea4 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -234,6 +234,9 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int
flags, struct svm_dev_
if (!iommu || dmar_disabled)
return -EINVAL;
+ if (!intel_svm_capable(iommu))
+ return -ENOTSUPP;
+
if (dev_is_pci(dev)) {
pasid_max = pci_max_pasids(to_pci_dev(dev));
if (pasid_max < 0)
--
2.17.1
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