ok thanks I got many details from the thread...But the problem is that how can i read the RAM content through a process, i mean the space outside the process address space and how a non-portable pointer be created. How can i bypass the buffer cache in writing to the disk. And how a raw writing is possible in 2.6 kernel. Thanks in Advance... On 1/23/06, Fawad Lateef <fawadlateef@xxxxxxxxx> wrote: > On 1/22/06, Sarith Lambu <sarith.lambu@xxxxxxxxx> wrote: > > hi, > > I am a newbie to linux and after refering many books i am not clear > with > > the concept of virtual memory and physical memory, how it is physically > > mapped in linux on i386 machines. I dont know whether this is the right > > place to ask. It will be helpful if someone explain with a code snippet. > > > > This is the right place to ask :) but its already discussed many > times, just look at archieves of kernelnewbies and do see this thread > (http://mail.nl.linux.org/kernelnewbies/2005-09/msg00005.html) and ask > questions which you not able to understand ! > > -- > Fawad Lateef > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/