On 2023/9/27 16:09, Tian, Kevin wrote:
From: Baolu Lu baolu.lu@linux.intel.com Sent: Wednesday, September 27, 2023 3:58 PM
On 2023/9/27 15:52, Tian, Kevin wrote:
From: Liu, Yi Lyi.l.liu@intel.com Sent: Tuesday, September 26, 2023 5:27 PM
From: Lu Baolubaolu.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 Baolubaolu.lu@linux.intel.com Signed-off-by: Yi Liuyi.l.liu@intel.com
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.
We already have the code in Linus' tree. The idxd driver uses it for kernel DMA with pasid.
ah, I forgot. 😊 probably can mention it in the commit message.
sure.