Dear All, Here is link which shows how the system call will work in the user space. http://www.linux.it/~rubini/docs/ksys/ksys.html Regards, Srinivas G > -----Original Message----- > From: kernelnewbies-bounce@xxxxxxxxxxxx [mailto:kernelnewbies- > bounce@xxxxxxxxxxxx] On Behalf Of Gaurav Dhiman > Sent: Thursday, March 17, 2005 9:44 PM > To: Renaud Lienhart > Cc: Gaurav; jhoney jhoney; kernelnewbies@xxxxxxxxxxxx > Subject: Re: Blocking process > > On Wed, 16 Mar 2005 20:07:03 +0100, Renaud Lienhart > <renaud.lienhart@xxxxxxx> wrote: > > Gaurav wrote: > > > [...] > > > instruction, which actually switches the CPU mode from > > > user to kernel mode (ring0 to ring3), at this time the > > ^^^^^^^^^^^^^^ > > Well actually ring3 is the user mode, and ring0 is the kernel > > mode. So you should have read "ring3 to ring0" :) > > > > -- > > Renaud Lienhart > > sorry, my mistake, yes ring3 is user mode and ring0 is kernel mode. > > --gd > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
