RE: [RFC 8/8] iommu/vt-d: Add set_dev_pasid callback for nested domain

From: Liu, Yi L yi.l.liu@intel.com Sent: Tuesday, September 26, 2023 5:27 PM

From: Lu Baolu baolu.lu@linux.intel.com

This allows the upper layers to set a nested type domain to a PASID of a device if the PASID feature is supported by the IOMMU hardware.

Signed-off-by: Lu Baolu baolu.lu@linux.intel.com Signed-off-by: Yi Liu yi.l.liu@intel.com

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drivers/iommu/intel/nested.c | 47 ++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+)

pasid can be attached to either user hwpt or kernel hwpt.

We should also introduce a set_dev_pasid callback for non-nest domain ops.