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Subject: Re: [virtio-dev] [PATCH RESEND] virtio-pmem: PMEM device spec
On Wed, Aug 04, 2021 at 01:28:39PM +0200, Pankaj Gupta wrote: > > > +\subsection{Device Initialization}\label{sec:Device Types / PMEM Device / Device Initialization} > > > + > > > +Device hotplugs physical memory to guest address space. Persistent memory device > > > +is emulated with file backed memory at host side. > > > > This paragraph can be dropped. The device could be implemented in a > > number of ways and it's beyond the scope of the specification. > > But spec is for current implementation? As we have more devices or ways, we > can amend this. The spec defines the driver/device interface, not the implementation. By focussing on the interface rather than implementation, we leave room for multiple implementations and avoid baking in assumptions about one particular implementation (e.g. file-backed MAP_SHARED host memory). Stefan
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