Date:   Sun, 12 Dec 2021 09:12:53 +0100
From:   Greg KH <greg@kroah.com>
To:     Muni Sekhar <munisekharrms@gmail.com>
Cc:     kernelnewbies <kernelnewbies@kernelnewbies.org>,
        tglx@linutronix.de, Ingo Molnar <mingo@redhat.com>, hpa@zytor.com,
        x86@kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: X86 : system call
Message-ID: <YbWvBQNYYUga9JAt@kroah.com>
References: <CAHhAz+iKepmJGRKzLe+B_XFOax4CzVzeeAB_T5YtZrPgeX8o6g@mail.gmail.com>
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On Sun, Dec 12, 2021 at 12:34:54PM +0530, Muni Sekhar wrote:
> Also, could someone please point me to a document which explains about
> "how to add a new system call" and the "system call flow from user
> space to kernel space" in X86 ARCHITECTURE (32-BIT AND 64-BIT).

There are many documents online that show both of these already.  Have
you used a search engine first?

Both of these are usually questions that students are asked for
assignments, good luck in class!

greg k-h