lkml.org 
[lkml]   [2019]   [Nov]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3 3/8] iommu/vt-d: Reject SVM bind for failed capability check
From
Date
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 <jacob.jun.pan@linux.intel.com>
> Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
I sent my Rb on v2:
Reviewed-by: Eric Auger <eric.auger@redhat.com>

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)
>

\
 
 \ /
  Last update: 2019-11-20 22:01    [W:0.157 / U:4.860 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site