On Mon, Aug 20, 2018 at 09:43:48PM +0530, poza@xxxxxxxxxxxxxx wrote: > On 2018-08-20 21:23, Keith Busch wrote: > > On Mon, Aug 20, 2018 at 09:22:27PM +1000, Benjamin Herrenschmidt wrote: > > > The main problem with unplug/replug (as I mentioned earlier) is that > > > it > > > just does NOT work for storage controllers (or similar type of > > > devices). The links between the storage controller and the mounted > > > filesystems is lost permanently, you'll most likely have to reboot the > > > machine. > > > > You probably shouldn't mount raw storage devices if they can be hot > > added/removed. There are device mappers for that! :) > > > > And you can't just change DPC device removal. A DPC event triggers > > the link down, and that will trigger pciehp to disconnect the subtree > > anyway. Having DPC do it too just means you get the same behavior with > > or without enabling STLCTL.DLLSC. > > Hi Keith, > > what about the bridges which are not hotplug capable ? That would have to mean SLTCTL.DLSSC isn't enabled. The point was to make DPC control behave the same regardless of slot control.
