Hi Chetan
'CONFIG_KERNEL_STACK_ORDER' is a UML configuration option to set the size
of the kernel stack. I believe the default is 2. If 2 the kernel stack is 4
pages. if 3 then it is 8 pages and so on.
I think your kenel is not configured for UML. Make sure it has a .config for
UML otherwise you can not compile a module for UML on that tree.
In your kernel src:
make mrproper
make ARCH=um xconfig /*or other method to make sure your config is UML*/
David
On Sat, Oct 4, 2008 at 10:10 PM, arshad hussain <[EMAIL PROTECTED]>wrote:
> On Thu, Oct 2, 2008 at 9:20 PM, Chetan Nanda <[EMAIL PROTECTED]>
> wrote:
> >
> >
> > On Tue, Sep 30, 2008 at 11:50 PM, arshad hussain <[EMAIL PROTECTED]
> >
> > wrote:
> >>
> >> On Tue, Sep 30, 2008 at 11:12 PM, Chetan Nanda <[EMAIL PROTECTED]>
> >> wrote:
> >> > Hi All,
> >> >
> >> > I am trying my hands with User mode Linux.
> >> > I am able to configure and kernel 2.6.24 under UML.
> >> >
> >> > Next It am trying to compile kernel module (so that modules can be
> >> > insmod
> >> > into running UML).
> >> > But not able to compile my kernel module for UML.
> >>
> >> Hoping you are not missing "ARCH=um" in your "Makefile".
> >> You also need the linux source.
> >
> > My Make file look like this:
> > ##############
> > CC=gcc
> > ARCH=um
> > KERNELDIR=/root/Work/linux_src/linux-source-2.6.24
> > ARCHDIR=$(KERNELDIR)/arch/um
> > TTDIR=$(ARCHDIR)/kernel/tt
> > SKASDIR=$(ARCHDIR)/kernel/skas
> > CFLAGS= -DDEBUG -D__KERNEL__ -DMODULE -I$(KERNELDIR)/include
> > -I$(ARCHDIR)/include -I$(TTDIR)/include -I$(SKASDIR)/include -Wall
> -Wunused
> > -Wuninitialized -g -O
> > ALL = hello_1.o
> >
> > all: $(ALL)
> > ################
> >
> > But on compiling module using 'make' make command gives me following
> error:
> > from hello_1.c:7:
> > /root/Work/linux_src/linux-source-2.6.24/include/asm/thread_info.h: In
> > function 'current_thread_info':
> > /root/Work/linux_src/linux-source-2.6.24/include/asm/thread_info.h:50:
> > error: 'CONFIG_KERNEL_STACK_ORDER' undeclared (first use in this
> function)
> > /root/Work/linux_src/linux-source-2.6.24/include/asm/thread_info.h:50:
> > error: (Each undeclared identifier is reported only once
> > /root/Work/linux_src/linux-source-2.6.24/include/asm/thread_info.h:50:
> > error: for each function it appears in.)
> >
> > Do I still missing something ?
>
> In case you have not got answers from
> user-mode-linux-user@lists.sourceforge.net
> Try this... I use Makefile different from yours. Copied the simplest
> when i first started
> and stuck with it's style.
>
> /* Sample make file , assuming your driver code is
> named driver.c */
> obj-m += driver.o
> all:
> make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
> ARCH=um
> clean:
> make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean ARCH=um
> /* end sample make file */
>
> See to it that "/lib/modules/$(shell uname -r)/build" points to the
> kernel source.
>
> [EMAIL PROTECTED]@localhost dd]# ls -l /lib/modules/$(uname -r)/build
> lrwxrwxrwx 1 root root 35 Dec 20 2007 /lib/modules/2.6.23.11/build ->
> ../../../umlkernel/linux-2.6.23.11/
> [EMAIL PROTECTED]@localhost dd]#
>
> My huch is there is something with your makefile, do we still need to
> pass-D_KERNEL_ (etc)
> in 2.6. This was done with 2.4.
>
> Hope this help you in narrowing down the problem.
>
> >
> > Thanks,
> > Chetan Nanda
> >
> >>
> >>
> >>
> >> >
> >> > Please point me into right direction.
> >> >
> >> > Thanks,
> >> > Chetan Nanda
> >> >
> >> >
> >
> >
>
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