diff options
| author | Yi Liu <yi.l.liu@intel.com> | 2025-03-21 20:19:35 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2025-03-25 16:18:31 +0300 |
| commit | ce15c13e7a1423cf418f825d33ab1747b151cfd6 (patch) | |
| tree | 7ec7b56770803f527655ffc2d93846af24be21cf /drivers/iommu/intel | |
| parent | 4c3f4f432c2d61ed266c797702bb58659f90bdff (diff) | |
| download | linux-ce15c13e7a1423cf418f825d33ab1747b151cfd6.tar.xz | |
iommu/vt-d: Add IOMMU_HWPT_ALLOC_PASID support
Intel iommu driver just treats it as a nop since Intel VT-d does not have
special requirement on domains attached to either the PASID or RID of a
PASID-capable device.
Link: https://patch.msgid.link/r/20250321171940.7213-14-yi.l.liu@intel.com
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/intel')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 3 | ||||
| -rw-r--r-- | drivers/iommu/intel/nested.c | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index cc46098f875b..7bc890609b90 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -3338,7 +3338,8 @@ intel_iommu_domain_alloc_paging_flags(struct device *dev, u32 flags, bool first_stage; if (flags & - (~(IOMMU_HWPT_ALLOC_NEST_PARENT | IOMMU_HWPT_ALLOC_DIRTY_TRACKING))) + (~(IOMMU_HWPT_ALLOC_NEST_PARENT | IOMMU_HWPT_ALLOC_DIRTY_TRACKING | + IOMMU_HWPT_ALLOC_PASID))) return ERR_PTR(-EOPNOTSUPP); if (nested_parent && !nested_supported(iommu)) return ERR_PTR(-EOPNOTSUPP); diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c index aba92c00b427..6ac5c534bef4 100644 --- a/drivers/iommu/intel/nested.c +++ b/drivers/iommu/intel/nested.c @@ -198,7 +198,7 @@ intel_iommu_domain_alloc_nested(struct device *dev, struct iommu_domain *parent, struct dmar_domain *domain; int ret; - if (!nested_supported(iommu) || flags) + if (!nested_supported(iommu) || flags & ~IOMMU_HWPT_ALLOC_PASID) return ERR_PTR(-EOPNOTSUPP); /* Must be nested domain */ |