On Thu, 2014-01-16 at 20:52 -0800, Eric W. Biederman wrote: > > I think we have largely survied until now because kdump is so popular > and kdump winds up having to reinitialize devices from any random > state. kdump also doesn't care too much if the device is still DMA'ing to the old kernel memory :-) > But like I said I am all for reducing the burden on device driver > developers. Right. I'm experimenting with a variant of device_shutdown() that tries remove() first and if it doesn't exist and shutdown() does, call that (is that ever the case ?). I'm keeping this kexec-specific for now. I'll try to hammer that on some of our machines see if it breaks anything, I think it's a much better approach for kexec. As for actual machine shutdown, we *might* have some corner cases where shutdown is actually different from remove for good reasons, so that will have to be investigated a bit more in depth. I'll post my results when I have them. Cheers, Ben.
