Memory issues in Linux
"Linux, like most of the OS have two modes of operation; one mode is called as user mode in which most of the applications and user processes runs for most of the time. Another mode is called as kernel mode. Most of the OS and system software runs in this mode; most of the user programs have small portion of code (e.g. system calls and privilege instructions) which runs in kernel mode. How memory needs is fulfilled in both these execution contexts are different and thus be seen from different perspective."
(Submitted by Noel Mon Jan 3, 2005 )
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