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Re: [Xen-devel] [PATCH RFC 1/2] linux/vnuma: vnuma support for pv guest

On Tue, Aug 27, 2013 at 06:27:15PM -0700, Matt Wilson wrote:
> On Tue, Aug 27, 2013 at 04:52:59AM -0400, Elena Ufimtseva wrote:
> > Uses subop hypercall to request XEN about vnuma topology.
> > Sets the memory blocks (aligned by XEN), cpus, distance table
> > on boot. NUMA support should be compiled in kernel.
> Are we *really sure* that we want to go this route for PV vNUMA?
> Couldn't we build just enough(tm) of the ACPI tables to express the
> NUMA topology when constructing the domain? That's what we do for the
> e820 map.

Ignore me somewhat, since the e820 information is retrieved via
hypercall similar to what you're proposing.

Still, if there's some way that we can reuse existing Linux code
rather than bolting on a completely parallel mechanism to set this up
under PV I think it'd be better.


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