linux-kernel - Re: [RFC PATCH 2/2] mm/pmem: Add memblock based e820 platform driver

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Message-ID: <CAPcyv4hbPTYkvzOjM7zYXgZ_7NnW4UJ0sUxP-fbCx4mjHDy1FA@mail.gmail.com>
Date:   Sun, 8 Jul 2018 23:06:12 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc:     Oliver <oohall@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 2/2] mm/pmem: Add memblock based e820 platform driver

On Sun, Jul 8, 2018 at 10:17 PM, Aneesh Kumar K.V
<aneesh.kumar@...ux.ibm.com> wrote:
> On 07/07/2018 11:06 PM, Dan Williams wrote:
[..]
> What we need is the ability to run with fsdax on hypervisor other than KVM.

That sounds like a production use case? How can it be actual
persistent memory if the kernel is picking the physical address
backing the range?