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

[Dan Williams]

On Tue, Oct 13, 2015 at 9:03 PM, Xiao Guangrong
<address@hidden> wrote:
>> Label-less DIMMs are tested as part of the unit test [1] and the
>> "memmap=nn!ss" kernel parameter that registers a persistent-memory
>> address range without a DIMM.  What error do you see when label
>> support is disabled?
>>
>> [1]: https://github.com/pmem/ndctl/blob/master/README.md
>>
>
> After revert my commits on NVDIMM driver, yeah, it works.
>
> Okay, i will drop the namespace part and make it as label-less
> instead.
>
> Thank you, Dan!
>

Good to hear.  There are still cases where a guest would likely want
to submit a _DSM, like retrieving address range scrub results from the
ACPI0012 root device, so the ASL work is still needed.  However, I
think the bulk of the storage functionality can be had without
storing/retrieving labels in the guest.