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



On 01/04/16 15:57, Stefano Stabellini wrote:
> 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
>
Yes, I'm looking at how to make the file-backend device work for Xen.

Haozhong

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