>>> On 01.02.16 at 13:01, <david.vra...@citrix.com> wrote: > On 01/02/16 11:58, Jan Beulich wrote: >> Commit 599bad38cf added BUS_NOTIFY_REMOVED_DEVICE in order to allow >> avoiding removal of IOMMU mappings before the driver actually got >> unbound from the device. Naturally we should be using this too. > > Because otherwise...? What happens if we don't make this change? > > Removing IOMMU mappings for a device when the driver is still bound to > the device looks wrong to me. Surely the device is still active and may > still be performing DMA at this point?
Exactly - you answered your own question (as does the commit referred to). Jan
