[PATCH RFC 0/5] nvme: Controller Data Queue (CDQ) support

Christoph Hellwig hch at lst.de
Fri Apr 24 06:24:23 PDT 2026


On Fri, Apr 24, 2026 at 10:06:15AM -0300, Jason Gunthorpe wrote:
> On Fri, Apr 24, 2026 at 01:37:50PM +0200, Joel Granados wrote:
> 
> > There is however, no clear consensus on how NVMe Live Migration should
> > land in the Linux kernel. The 2022 discussion [1] explored a VFIO-based
> > approach but reached no conclusion, likely because the specification was
> > not yet mature.
> 
> Yes it was paused until the spec matures, then I expect it to go
> forward.

And it will happen in the nvme software working group.  Which should be
up an running if Samsung hadn't done everything in the power to torpedo
it.  Because of that I do not exact Samsung to have any major impact in
how this will be implemented in Linux.

Note that we also can't discuss any of this at LSF/MM in public, so
Joel side channel loading it onto the schedule should be removed as well.



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