On Fri, Oct 3, 2008 at 2:04 PM, yogeshwar sonawane <yogyas@xxxxxxxxx> wrote: > Hi all, > > By default, all memory/RAM is cacheable by linux kernel /host CPU ? I think yes, but you can always change this behaviour. > What is the scenario with other OSes ? I think other OSes behave the same: caching is preferred all the time unless it is needed otherwise. > If RAM is cacheable, then the memory-mapped IO regions of the > peripherals are also cacheable ? IMO no, caching it in RAM could introduce unwanted behaviour: data is expected to be written to a device while in fact it's still cached. regards, Mulyadi. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
