void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
{
const S390CPUDef *def;
def = s390_find_cpu_def(0, gen, ec_ga, NULL);
clear_bit(feat, (unsigned long *)&def->default_feat);
}
CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa,
CpuModelInfo *infob,
Error **errp)
{
CpuModelBaselineInfo *baseline_info;
S390CPUModel modela, modelb, model;
uint16_t cpu_type;
uint8_t max_gen_ga;
uint8_t max_gen;
/* convert both models to our internal representation */
cpu_model_from_info(&modela, infoa, errp);
if (*errp) {
return NULL;
}
cpu_model_from_info(&modelb, infob, errp);
if (*errp) {
return NULL;
}
/* features both models support */
bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
/* detect the maximum model not regarding features */
if (modela.def->gen == modelb.def->gen) {
if (modela.def->type == modelb.def->type) {
cpu_type = modela.def->type;
} else {
cpu_type = 0;
}
max_gen = modela.def->gen;
max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
} else if (modela.def->gen > modelb.def->gen) {
cpu_type = modelb.def->type;
max_gen = modelb.def->gen;
max_gen_ga = modelb.def->ec_ga;
} else {
cpu_type = modela.def->type;
max_gen = modela.def->gen;
max_gen_ga = modela.def->ec_ga;
}
model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
model.features);
/* strip off features not part of the max model */
bitmap_and(model.features, model.features, model.def->full_feat,
S390_FEAT_MAX);
baseline_info = g_malloc0(sizeof(*baseline_info));
baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
cpu_info_from_model(baseline_info->model, &model, true);
return baseline_info;
}
