On 11/21/2016 06:09 PM, Jerome Glisse wrote: > On Mon, Nov 21, 2016 at 04:07:46PM +0530, Anshuman Khandual wrote: >> On 11/18/2016 11:48 PM, Jérôme Glisse wrote: >>> HMM wants to remove device memory early before device tear down so add an >>> helper to do that. >> >> Could you please explain why HMM wants to remove device memory before >> device tear down ? >> > > Some device driver want to manage memory for several physical devices from a > single fake device driver. Because it fits their driver architecture better > and those physical devices can have dedicated link between them. > > Issue is that the fake device driver can outlive any of the real device for a > long time so we want to be able to remove device memory before the fake device > goes away to free up resources early.
Got it.
