NVMe K/V value devices

[Christoph Hellwig]

On Thu, Feb 17, 2022 at 04:42:08PM +0530, Kanchan Joshi wrote:
> I do not have it handy, but I think at this moment there is nothing in
> the nvme-driver that limits block-interface for KV. Are you thinking
> of restricting char/passthrough only access?

The block interface obviously will not work with KV at all.  But what
I'd like to do is to offer the passthrough interface for all command
sets, including those unknown to the driver.  Which would be pretty
simple, but I'd rather not land untested code.