On Fri, Oct 20, 2017 at 9:06 AM, Christoph Hellwig [off-list ref] wrote:

On Fri, Oct 20, 2017 at 08:05:09AM -0700, Dan Williams wrote:

quoted

Right, that's the same recommendation I gave.

    https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg08404.html

...so maybe I'm misunderstanding your concern? It sounds like we're on
the same page.

Yes, the above is exactly what I think we should do it.  And in many
ways virtio seems overkill if we could just have a hypercall or doorbell
page as the queueing infrastructure in virtio shouldn't really be
needed.

Ah ok, yes, get rid of the virtio-pmem driver and just make
nvdimm_flush() do a hypercall based on region-type flag.

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