On Fri, Sep 30, 2016 at 10:02:49AM +0200, Paolo Bonzini wrote:
> On 29/09/2016 23:14, Eduardo Habkost wrote:
> > +/* Return the feature property name for a feature flag bit */
> > +static const char *x86_cpu_feature_name(FeatureWord w, int bitnr)
> > +{
> > + /* XSAVE components are automatically enabled by other features,
> > + * so return the original feature name instead
> > + */
> > + if (w == FEAT_XSAVE_COMP_LO || w == FEAT_XSAVE_COMP_HI) {
> > + int comp = (w == FEAT_XSAVE_COMP_HI) ? bitnr + 32 : bitnr;
> > +
> > + if (comp < ARRAY_SIZE(x86_ext_save_areas) &&
> > + x86_ext_save_areas[comp].bits) {
> > + w = x86_ext_save_areas[comp].feature;
> > + bitnr = ctz32(x86_ext_save_areas[comp].bits);
> > + }
> > + }
> > +
> > + assert(bitnr < 32);
> > + assert(w < FEATURE_WORDS);
> > + return feature_word_info[w].feat_names[bitnr];
> > +}
> > +
>
> Could this be used to replace migratable_features?
It can. I will do it in a follow-up patch.
--
Eduardo
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