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[libvirt] X86CPU "feature-words" property on QEMU (was Re: [PATCH v3 1/3] x86: Data structure changes to support MSR based) features



On Fri, Aug 17, 2018 at 07:34:13PM +0200, Paolo Bonzini wrote:
> On 17/08/2018 17:55, Eduardo Habkost wrote:
> >> The names will be X86_CPU_FEATURE_WORD_TYPE_CPUID and
> >> X86_CPU_FEATURE_WORD_TYPE_MSR.
> > I wouldn't like to make this an external API unless really
> > necessary.  I would rather deprecate the "feature-words" property
> > because nobody ended up using it.
> 
> I think we should either remove it directly, or extend it to support MSR
> features.  Deprecating and only supporting CPUID features is the worst
> of both worlds...

So let's do what's necessary to remove it.  But I don't think the
removal of "feature-words" should block the inclusion of this
series.

Now, should QOM properties follow our feature deprecation policy,
or they were never a supported external API and we can remove it
immediately?

CCing Jiri and libvir-list, because I just found that there's
code on libvirt that uses it, but I don't know exactly it does
with that info.

-- 
Eduardo


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