Add a check during SVM bind to ensure CPU and IOMMU hardware capabilities are met.
Signed-off-by: Jacob Pan <[email protected]> Reviewed-by: Eric Auger <[email protected]> Acked-by: Lu Baolu <[email protected]> --- 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 716c543488f6..74df10a39dfc 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -238,6 +238,9 @@ 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) -- 2.7.4 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
