[PATCH RFC] nvme-ioctl: propagate PRP1 from ioctl to admin cmd

[Keith Busch]

On Tue, Jun 23, 2026 at 12:34:29PM +0200, David Epping wrote:
> My question is, and maybe I should have put this in my initial email
> explicitely, is there interest in having such functionality in the upstream
> Linux in-Kernel NVMe driver? An interface and mechanism to request and
> manage IO queues that are not used by the Linux NVMe driver to perform IO,
> but handed to a separate entity for this purpose.

Partitioning device resources to assign to special purposes should be
under a well defined framework. Unfortunately the only thing I know of
approaching this is SIOV. :) Not sure how other maintainers and
developers feel about it, but that's the route I would go for this. It
at least provides memory access on a queue granularity and neatly
separates the control plane.