[PATCH 1/2] NVMe: Lock out shutdown during pci init

[Keith Busch]

On Tue, Feb 16, 2016 at 11:59:13PM -0800, Christoph Hellwig wrote:
> I always thought there was a deep reason we'd need to unmap it.  But
> if there isn't getting rid of the unmap should make the driver a lot
> more robust.

Remapping after each reset was prepping for a non-existent feature.
We'd like to create domains safe for the PCI core to reassign bus numbers
and memory windows on a live system for various hot plug scenarios,
but I don't see that happening soon.