Re: [PATCH v2] nfit: add Hyper-V NVDIMM DSM command set to white list

From: Dan Williams
Date: Sat Feb 02 2019 - 00:28:01 EST

On Fri, Feb 1, 2019 at 6:17 PM Dexuan Cui <decui@xxxxxxxxxxxxx> wrote:
> > From: Dan Williams <dan.j.williams@xxxxxxxxx>
> > Honestly, the quickest path to something functional for Linux is to
> > simply delete the _LSR support and use raw mode defined namespaces.
> > Why have labels if they are read-only and the region is sufficient for
> > defining boundaries?
> Just now Hyper-V team confirmed _LSW is not supported.
> But with Ubuntu 19.04 kernel (4.18.0-11-generic), I'm able to run the commands
> without any issue:

This is because Ubuntu is running in "label-less" mode. So all the
writes it is performing for namespace reconfiguration are just going
to the data-space of the region, not the labels.