> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Thursday, March 2, 2023 8:55 PM > > On Thu, Mar 02, 2023 at 08:06:27AM +0000, Tian, Kevin wrote: > > > From: Jason Gunthorpe <jgg@xxxxxxxxxx> > > > Sent: Saturday, February 25, 2023 8:28 AM > > > > > > These items only needs to be done once per group, not once per device. > The > > > once per device was a way to make the device list work. Since we are > > > abandoning this we can optimize things a bit. > > > > > > > Are we sure that a device hot-plugged into the group won't increase the > > list of reserved IOVA ranges? > > > > Currently iommu_get_group_resv_regions() queries reserved regions per > > device and then merge them into the specified list. > > So, maybe we should export the device API from the core code and use > it here instead of this group stuff. We don't need the core code to > merge each device together for us anyhow. > Yes, that'd be clearer in this context.
