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.
