> The important thing happens during a process switch is the change of > kernel mode stack of the process ( From previous process to the next > process's stack ) and the rest of the thing follows. In simple terms, a > IRET instruction will cause the execution of the instruction X+1 ( when > that process was last interuppted ) because CPU is now working with the > next process stack. OK so its done through an IRET and thus operates like a function in user space. Makes sense. > Also, one important macro is "current" ( points to the tast_struct of > the running process ) which is actually derived from the stack pointer > of the processor. Hrm I will look more into that exact portion of it- I knew what current was, but never really thought about it- should prove interesting either way. When I get some time I'll sift through the code some, thanks. jnf -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
