I guess that array *mem_map* keeps trace of the use of low memory only (that is, the first up to 896M physical memory), and that the memory above 896M is kept trace of by linked-list *vmlist* and in ture the *pages* field in each element of the list. Is that correct understanding? Thanks. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ