Hi All, + Sohil and Rob Clark (as there are dropped from CC'list)
> > > Most iommu vendor drivers have switched from per-device to per-group > > > domain (a.k.a. default domain). So per-group pass-through mode makes > more sense? > > > > > > By the way, can we extend this to "per-group default domain type", > > > instead of only "per-group pass-through mode"? Currently we have > > > system level default domain type, if we have finer granularity of > > > default domain type, both iommu drivers and end users will benefit from > > > it. > > > > Sure! Makes sense.. per-group default domain type sounds good. I am planning to implement an RFC (supporting only runtime case for now) which works as below 1. User unbinds the driver by writing to sysfs 2. User puts a group in pass through mode by writing "1" to /sys/kernel/iommu_groups/<group_id>/pt 3. User re-binds the driver by writing to sysfs As suggested by Lu, Baolu will look into implementing this by using "per-group default domain type" If anyone has suggestions/comments/concerns, please reply. Regards, Sai _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
