> From: Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx> > Sent: Wednesday, September 27, 2023 3:58 PM > > On 2023/9/27 15:52, Tian, Kevin wrote: > >> From: Liu, Yi L<yi.l.liu@xxxxxxxxx> > >> Sent: Tuesday, September 26, 2023 5:27 PM > >> > >> From: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx> > >> > >> 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@xxxxxxxxxxxxxxx> > >> Signed-off-by: Yi Liu<yi.l.liu@xxxxxxxxx> > >> --- > >> 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.
