diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-10-25 21:42:15 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-10-26 11:16:34 -0300 |
| commit | b41e38e225398191aaa0f1115d6234f57ffd0741 (patch) | |
| tree | b412993e8e2d760cd95da68852290182c7f49a8d /drivers/iommu/intel/nested.c | |
| parent | 9838f2bb6b6be1e648b9377fc97ee7b18d9f2fbf (diff) | |
iommu/vt-d: Add nested domain allocation
This adds the support for IOMMU_HWPT_DATA_VTD_S1 type. And 'nested_parent'
is added to mark the nested parent domain to sanitize the input parent domain.
Link: https://lore.kernel.org/r/20231026044216.64964-8-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/intel/nested.c')
| -rw-r--r-- | drivers/iommu/intel/nested.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c index b560ab76e126..b5a5563ab32c 100644 --- a/drivers/iommu/intel/nested.c +++ b/drivers/iommu/intel/nested.c @@ -89,7 +89,8 @@ struct iommu_domain *intel_nested_domain_alloc(struct iommu_domain *parent, /* Must be nested domain */ if (user_data->type != IOMMU_HWPT_DATA_VTD_S1) return ERR_PTR(-EOPNOTSUPP); - if (parent->ops != intel_iommu_ops.default_domain_ops) + if (parent->ops != intel_iommu_ops.default_domain_ops || + !s2_domain->nested_parent) return ERR_PTR(-EINVAL); ret = iommu_copy_struct_from_user(&vtd, user_data, |