mm/memblock: export memblock_{start/end}_of_DRAM

[Christoph Hellwig]

On Sat, Oct 31, 2020 at 11:05:45AM +0100, David Hildenbrand wrote:
> On 31.10.20 10:18, Christoph Hellwig wrote:
> > On Fri, Oct 30, 2020 at 10:38:42AM +0200, Mike Rapoport wrote:
> > > What do you mean by "system memory block"? There could be a lot of
> > > interpretations if you take into account memory hotplug, "mem=" option,
> > > reserved and firmware memory.
> > > 
> > > I'd suggest you to describe the entire use case in more detail. Having
> > > the complete picture would help finding a proper solution.
> > 
> > I think we need the code for the driver trying to do this as an RFC
> > submission.  Everything else is rather pointless.
> 
> Sharing RFCs is most probably not what people want when developing advanced
> hypervisor features :)

Well, if they can't even do that it really has no relevance for kernel
development.