It runs as Background process in the kernel memory (init-process). When system calls is coming from User space/Land, there will be context switch from user to kernel space happens. I think kernel main thread serving those system calls.

On Mon, Feb 18, 2013 at 9:20 PM, kapil agrawal <kapil.agrawal81@gmail.com> wrote:

Hi,

How the linux kernel runs in the system after spawning the init and mounting the root FS.
Does it run as some background process ?
How it serves the system calls etc. ?

Regards
Kapil

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