On Thu, Apr 29, 2021 at 2:58 AM Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote: > > On Thu, Apr 29, 2021 at 11:03 AM Oliver Neukum <oneukum@xxxxxxxx> wrote: > > > > Am Mittwoch, den 28.04.2021, 14:21 +0200 schrieb Rafael J. Wysocki: > > > > > In principle, in the wake of Thunderbolt every PCI driver handling > > > PCIe devices needs to be able to deal with a device that's gone away > > > without notice, because in principle any PCIe device can be included > > > into a Thunderbolt docking station which may go away as a whole > > > without notice. > > > > Yes, but we are dealing with what we export to user space, don't we? > > Right, so it would be good to know why exporting this information to > user space is desired. For us, the driving motivation is to implement policies in userspace for user removable devices. Eg: * Tracking the statistics around usage of user removable devices (how many users use such devices, how often etc). * Removing user removable devices when a user logs out. * Not allowing a new user removable device while the screen is locked. * (perhaps additional such policies in future). Thanks, Rajat
