parse_topology_leaf
if (tscan->c->cpuid_level >= 0x1f && parse_topology_leaf(tscan, 0x1f))
if (tscan->c->extended_cpuid_level >= 0x80000026 && parse_topology_leaf(tscan, 0x80000026))
return tscan->c->cpuid_level >= 0x0b && parse_topology_leaf(tscan, 0x0b);