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Re: [Xen-devel] [PATCH 0/2] add vNVDIMM support for Xen

On Tue, 29 Dec 2015, Xiao Guangrong wrote:
> On 12/29/2015 07:28 PM, Haozhong Zhang wrote:
> > This patch series extends current vNVDIMM implementation to provide
> > vNVDIMM to HVM domains when QEMU is used as the device model of Xen.
> > 
> > This patch series is based on upstream qemu rather of qemu-xen,
> > because vNVDIMM support has not been in qemu-xen (commit f165e58).
> > 
> > * Following two problem that prevent Xen from directly using current
> >    implementation are solved by this patch series.
> > 
> >   (1) The current way to allocate memory for pc-dimm based vNVDIMM
> >       through file-backend device is not compatible with Xen. Patch 2
> >       adds another pc-nvdimm device to manage vNVDIMM's memory by
> >       itself.
> > 
> Let's figure a way to reuse current NVDIMM device mode, two modes
> completely make the implementation complex and unmaintainable.

I agree

> Also, the way reserving memory region for NVDIMM ACPI needs to be
> adjusted and that is i am currently working on.

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