Hi Jacob,
On 11/19/19 6:56 PM, Jacob Pan wrote:
> Add a check during SVM bind to ensure CPU and IOMMU hardware capabilities
> are met.
>
> Signed-off-by: Jacob Pan <[email protected]>
> Acked-by: Lu Baolu <[email protected]>
I sent my Rb on v2:
Reviewed-by: Eric Auger <[email protected]>
Thanks
Eric
> ---
> 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)
>
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