system call

[Pranay Srivastava]

On Sat, Apr 9, 2016 at 8:11 PM, Nitin Varyani <varyani.nitin1 at gmail.com> wrote:
> I am using Ubuntu
>
> On Sat, Apr 9, 2016 at 8:04 PM, Pranay Srivastava <pranjas at gmail.com> wrote:
>>
>> On Sat, Apr 9, 2016 at 7:51 PM, Nitin Varyani <varyani.nitin1 at gmail.com>
>> wrote:
>> > I have a 64 bit machine
>> >
>>
>> Before changing the source try to build, install and boot your kernel.
>> I'm sure there are some extra steps you might need to perform to boot your
>> compiled kernel. Which distro are you using? I used OpenSuse for this
>> work.
>>
>>
>> > I am changing linux 3.5.4 source tree.
>> >
>> > I modified syscall_64.tbl
>> > I had put your code in linux_3.5.4/arch/x86/pks_first/pks_first_call.c
>> >
>> > Then, I created pks_first/Makefile
>> >
>> > Modified the arch/x86/Kbuild
>> >
>> > Modified include/linux/syscalls.h
>> >
>> >
>> > I ran "make menuconfig" and then simply exit.
>> >
>> > Then I ran
>> >
>> > "make"
>> >
>> > I saw that pks_first_call.o was created
>> >
>> > I then ran
>> >
>> > "make modules_install"
>> > "make install"
>> >
>> > After then I restarted my system and booted linux 3.5.4. But it was
>> > stuck
>> > half way.
>> >
>> > On Sat, Apr 9, 2016 at 7:39 PM, Pranay Srivastava <pranjas at gmail.com>
>> > wrote:
>> >>
>> >> Hi Nitin
>> >>
>> >> On Sat, Apr 9, 2016 at 5:03 PM, Nitin Varyani
>> >> <varyani.nitin1 at gmail.com>
>> >> wrote:
>> >> > Neither of the solution is working.
>> >> > @ Pranay: kernel is not booting after making the changes you have
>> >> > mentioned.
>> >> > somethings like
>> >> > "dropping to shell
>> >> > initramfs:"
>> >> > is displayed on booting.
>> >>
>> >> I don't think this is related to the changes you made. I would advise
>> >> you just build the sources for your
>> >> distro and try to get to boot the kernel you compiled. Perhaps some
>> >> steps you might have missed specific to your
>> >> distro?
>> >>
>> >> >
>> >> >
>> >> > On Thu, Apr 7, 2016 at 1:08 PM, Pranay Srivastava <pranjas at gmail.com>
>> >> > wrote:
>> >> >>
>> >> >> Nitin
>> >> >>
>> >> >>
>> >> >> On Thu, Apr 7, 2016 at 11:53 AM, Nitin Varyani
>> >> >> <varyani.nitin1 at gmail.com>
>> >> >> wrote:
>> >> >> >
>> >> >> > Hi,
>> >> >> >       I want to implement a system call as explained in Linux
>> >> >> > kernel
>> >> >> > development by Robert Love.
>> >> >> >
>> >> >> > He does three things
>> >> >> >  adding entry to entry.S
>> >> >> > adding entry to asm/unistd.h
>> >> >> > and adding the system call code to sched.c
>> >> >> >
>> >> >> >
>> >> >> > and then make + make install
>> >> >> >
>> >> >> > I do not want to implement for all architectures but only for my
>> >> >> > PC
>> >> >> > which is 64 bit. I am not able to locate files entry. S and
>> >> >> > unistd.h
>> >> >> > which
>> >> >> > he is telling in his tutorial.
>> >> >> > Please help me out to figure out the exact steps. Please also
>> >> >> > mention
>> >> >> > the linux kernel version I should use.
>> >> >> >
>> >> >>
>> >> >> Please refer this. I wrote this quite a while back but should be
>> >> >> good
>> >> >> to
>> >> >> go.
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> http://codewithkernel.blogspot.my/2014/06/adding-new-system-call-in-linux-x86-and.html
>> >> >>
>> >> >> > Nitin
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > Kernelnewbies mailing list
>> >> >> > Kernelnewbies at kernelnewbies.org
>> >> >> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >> >> --
>> >> >>         ---P.K.S
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >>         ---P.K.S
>> >
>> >
>>
>>
>>
>> --
>>         ---P.K.S
>
>

Check this

http://unix.stackexchange.com/questions/123632/newly-compiled-kernel-not-booting-up-vanilla-kernel-3-12-14



-- 
        ---P.K.S