On Wed, Feb 27, 2008 at 04:08:27PM +0100, Daniel Janzon wrote:
> When I run the linux executable, the "Hello world!" is never printed. I
> checked with gdb that most of the functions in init/initramfs.c are
> called, but I did not succeed to track the execution to the point where
> init in the ramfs is called.
>
> Are there any known issues with initramfs and UML?
Not that I know of. I played with this a bit, and I think the reason
there's no output is that the kernel isn't finding a /dev/console.
Here's what I found out (much of which you probably already know):
You need to run cpio -c
init needs to be /init, and statically linked
You need /dev/console (although I made one) and I still get "Warning:
unable to open an initial console."
My cpio directory looks like this:
$ ls -Rl .
.:
total 536
drwxrwxr-x 2 jdike jdike 4096 2008-03-07 12:49 dev
-rwxrwxr-x 1 jdike jdike 537826 2008-03-07 12:58 init
./dev:
total 0
crw-r--r-- 1 root root 5, 1 2008-03-07 12:49 console
I removed the sleep from your init, and the thing seemed to exit, as
UML paniced with "Attempted to kill init!", so I think it ran.
There's just going to be no output until you figure out how to give a
console.
Jeff
--
Work email - jdike at linux dot intel dot com
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
User-mode-linux-user mailing list
User-mode-linux-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
