Messages in this thread Patch in this message | | | From | Jacob Pan <> | Subject | [PATCH 2/4] iommu/vt-d: Use non-privileged mode for all PASIDs | Date | Wed, 1 Mar 2023 16:59:57 -0800 |
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For in-kernel DMA, use non-privileged access for all PASIDs to be consistent with RID_PASID. There's no need to differentiate user and kernel for in-kernel DMA.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> --- drivers/iommu/intel/iommu.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index a0cb3bc851ac..9e3c056e392d 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2334,8 +2334,6 @@ static int domain_setup_first_level(struct intel_iommu *iommu, if (level != 4 && level != 5) return -EINVAL; - if (pasid != PASID_RID2PASID) - flags |= PASID_FLAG_SUPERVISOR_MODE; if (level == 5) flags |= PASID_FLAG_FL5LP; -- 2.25.1
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