Re: [Xen-devel] [PATCH RESEND 10/12] libxl: numa-sched: enable getting/specifying per-vcpu node-affinity

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On gio, 2013-11-07 at 18:29 +0000, Ian Jackson wrote:
> Dario Faggioli writes ("[PATCH RESEND 10/12] libxl: numa-sched: enable 
> getting/specifying per-vcpu node-affinity"):
> > by providing the proper get/set interfaces and wiring them
> > to the new libxc calls from the previous commit.
> > 
> > For the 'get' part, the node-affinity of all the vcpus of a
> > domain is also reported via libxl_list_vcpu() (exactly as it
> > is happening for their vcpu affinity already), adding a
> > specific field to libxl_vcpuinfo.
> 
> This is a change to the libxl ABI.  I think you should bump the MAJOR
> number in this patch (or a previous one).
> 
Oh, do I? I may be missing something then. Every time I've done
something similar to this before, I did provide the proper LIBXL_HAVE_*
stuff (which this patch does), for the sake of _API_ compatibility, and
that was it. :-(

I've just looked up in libxl.h and found the comment block about ABI
compatibility and SONAME bumping but (sorry) I'm not 100% sure I fully
understand what it says. Does it (and you) mean that, since this is the
first change since 4.3 that breaks ABI compatibility, I should include a
patch to tools/libxl/Makefile doing something like:

-MAJOR=4.3
+MAJOR=4.4

?

If yes, anything more than that?

Thanks and Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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