Commit 6eba09a4 authored Jan 02, 2020 by Jacob Pan Committed by Joerg Roedel Jan 07, 2020

iommu/vt-d: Reject SVM bind for failed capability check



Add a check during SVM bind to ensure CPU and IOMMU hardware capabilities
are met.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent 79db7e1b

drivers/iommu/intel-svm.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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)

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