linux-kernel - Re: [PATCH v4 12/16] libnvdimm, nfit: enable support for volatile ranges

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Date:   Thu, 6 Jul 2017 04:56:21 +0200
From:   "hch@....de" <hch@....de>
To:     Oliver <oohall@...il.com>
Cc:     "hch@....de" <hch@....de>, Dan Williams <dan.j.williams@...el.com>,
        "jack@...e.cz" <jack@...e.cz>,
        "mawilcox@...rosoft.com" <mawilcox@...rosoft.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH v4 12/16] libnvdimm, nfit: enable support for volatile
        ranges

On Thu, Jul 06, 2017 at 12:53:13PM +1000, Oliver wrote:
> The main use case is provisioning install media for bare metal
> servers. Traditionally that's been handled by having the BMC emulate a
> USB CD drive. Unfortunately, most BMCs have limited CPU, limited
> memory and a wet-string network connection so a host based alternative
> is nice to have.

If they are CD replacement they should be marked as read-only, which
would solve any concerns about them being volatile or not.