[PATCH v2] nvme: Add 48-bit DMA address quirk for Amazon NVMe controllers

[Christoph Hellwig]

On Wed, Feb 10, 2021 at 01:39:42AM +0100, Filippo Sironi wrote:
> Amazon NVMe controllers do not support 64-bit DMA addresses; they are
> limited to 48-bit DMA addresses.  Let's add a quirk to ensure that we
> make use of 48-bit DMA addresses to avoid misbehavior.

This should probably say some, and mention that they do not follow
the spec.  But I can fix this up when applying the patch.