But how come lilo loads a kernel2.4 when system map is pointing to map of kerrnel2.2 Regards, Mukund Deshmukh Beta Computronics Pvt. Ltd. Web site - http://betacomp.com
-----Original Message----- From: Suresh Ramasubramanian <[EMAIL PROTECTED]> To: Linux-India-Help@Lists. Sourceforge. Net <[EMAIL PROTECTED]> Date: Monday, January 07, 2002 10:21 AM Subject: [LIH] Re: System.map >+++ mukund [linux-india] <03/01/02 11:01 +0530>: >> What is the role of /boot/system.map >> I can load kernel 2.4, when system.map is pointing toward kernel 2.2 map >> using lilo. > >Everytime you compile a kernel, system.map is created to map the kernel >address locations of assorted variables and functions to symbolic names. > >Something like you link a .o to an executable with gcc. > >Every time you compile your kernel, this info changes (variable addresses >etc) so system map has to be updated. > >So you might see stuff like > >System.map does not match actual kernel >module <foo> could not be loaded because some versions do not match > >on bootup, if your sytem map doesn't match. > >The fix is simple - just change the system.map symlink to point to your >current kernel's system.map file (which should be there in /boot happen you >did a make install). > >When a protection fault happens, klogd translates the addresses (total >gibberish effectively) to symbols, using the system.map - for easy debugging >basically - so you find out exactly what a kernel was doing when the error >occured. Progs like lsof also use the system.map file. > >klogd looks for system.map in three places - in the order > >/boot/System.map >/System.map >/usr/src/linux/System.map > > -srs (all this googled out when I had this problem earlier ...) > >-- >Suresh Ramasubramanian <----> mallet <at> efn dot org >EMail Sturmbannfuhrer, Lower Middle Class Unix Sysadmin >[Linux One Stanza Tip] From : <[EMAIL PROTECTED]> >LOST #035 -**< Sub : links console browser >**- >Links browser, supports frames and tables ... >For a reasonably good Console based browser visit here: >http://artax.karlin.mff.cuni.cz/~mikulas/links/ > >_______________________________________________ >linux-india-help mailing list >[EMAIL PROTECTED] >https://lists.sourceforge.net/lists/listinfo/linux-india-help > _______________________________________________ linux-india-help mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/linux-india-help
