Re: [Qemu-devel] [PATCH v3 00/32] implement vNVDIMM

[Xiao Guangrong]

On 10/13/2015 11:38 AM, Dan Williams wrote:
> On Mon, Oct 12, 2015 at 8:14 PM, Xiao Guangrong
> <address@hidden> wrote:
> > On 10/13/2015 12:36 AM, Dan Williams wrote:
> > > Static namespaces can be emitted without a label.  Linux needs this to
> > > support existing "label-less" bare metal NVDIMMs.
> >
> >
> > This is Linux specific? As i did not see it has been documented in the
> > spec...
>
> I expect most NVDIMMs, especially existing ones available today, do
> not have a label area.  This is not Linux specific and ACPI 6 does not
> specify a label area, only the Intel DSM Interface Example.

Yup, label data is accessed via DSM interface, the spec I mentioned
is Intel DSM Interface Example.

However, IIRC Linux NVDIMM driver refused to use the device if no
DSM GET_LABEL support, are you going to update it?