From ce15c13e7a1423cf418f825d33ab1747b151cfd6 Mon Sep 17 00:00:00 2001 From: Yi Liu Date: Fri, 21 Mar 2025 10:19:35 -0700 Subject: 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 Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Signed-off-by: Yi Liu Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- drivers/iommu/intel/nested.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iommu/intel/nested.c') 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 */ -- cgit v1.2.3