System call service routine and interrupt context

[Pritam Bankar]

Hi,

My question is, do all the code of interrupt handler in system call
gets executed in interrupt context?

System calls generate software interrupts. So when I do open() syscall
it we call do_sys_open()  handler which will eventually call file
system specific open function call. Will all this happen in interrupt
context until I get open file descriptor in user land?

If not when does context change?


Thanks and regards,
Pritam Bankar