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

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Date:   Sat, 2 Feb 2019 03:32:01 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Josh Poulson <jopoulso@...rosoft.com>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "driverdev-devel@...uxdriverproject.org" 
        <driverdev-devel@...uxdriverproject.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        Ross Zwisler <zwisler@...nel.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>, Len Brown <lenb@...nel.org>
Subject: RE: [PATCH v2] nfit: add Hyper-V NVDIMM DSM command set to white list

> From: Dan Williams <dan.j.williams@...el.com>
> Sent: Friday, February 1, 2019 5:29 PM
> ... 
> 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?
Hyper-V Virtual NVDIMM can already work with Ubuntu 19.04 virtual machine
running on Hyper-V, i.e. I can create a raw or fsdax namesapce, and create a
xfs or ext4 file sysetm in /dev/pmem0p1, and mount the file system with and
without "-o dax". The basic functionality is good.

My recent work is mainly for ndctl support, i.e. get the health info by ndctl,
and use ndctl to monitor the error events (if applicable).

Thanks,
-- Dexuan