From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [PATCH 4/4] hvmloader: add support to load extra
 ACPI tables from qemu
Date: Tue, 26 Jan 2016 09:44:08 -0500
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> Last year at Linux Plumbers Conference I attended a session dedicated
> to NVDIMM support. I asked the very same question and the INTEL guy
> there told me there is indeed something like a partition table meant
> to describe the layout of the memory areas and their contents.

It is described in details at pmem.io, look at  Documents, see
http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf see Namespaces section.

Then I would recommend you read:
http://pmem.io/documents/NVDIMM_Driver_Writers_Guide.pdf

followed by http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf

And then for dessert:
https://www.kernel.org/doc/Documentation/nvdimm/nvdimm.txt
which explains it in more technical terms.
> 
> It would be nice to have a pointer to such information. Without anything
> like this it might be rather difficult to find the best solution how to
> implement NVDIMM support in Xen or any other product.