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List:       user-mode-linux-user
Subject:    Re: [uml-user] UML guest silently exiting, doesn't boot
From:       Gunter Ohrner <G.Ohrner () post ! rwth-aachen ! de>
Date:       2005-08-28 22:45:43
Message-ID: 200508290045.45009.G.Ohrner () post ! rwth-aachen ! de
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Am Sonntag, 28. August 2005 15:35 schrieben Sie:
> > After retrying with an UML kernel build using UML's standard .config,
> You are using something very different from the standard .config.

Mh... That's pretty strange... I just made a mrproper in my 2.6.12.5 bs9 
source tree and, just to be sure, unpacked a fresh 2.6.12.5 kernel.

In both tress I just made

  make menuconfig ARCH=um

thereafter.

Both show the same options selected in menuconfig.

> The standard config boots and runs, you came up with something very
> different.

Mh, that's pretty strange. Is there a way the default .config can be 
altered before / when the kernel configuration starts for the first time? 
AFAIK the configuration used by the current, running, kernel influences 
the selection made by "make menuconfig", maybe this also influcences the 
configuration which was presented to me when configuring UML? Is there a 
way to disable this behavior if current and target architectures do not 
match?

[*] stderr console (NEW)
[ ] Virtual serial line (NEW)
[ ] null channel support (NEW)
[ ] port channel support (NEW)
[ ] pty channel support (NEW)
[ ] tty channel support (NEW)
[ ] xterm channel support (NEW)
(fd:0,fd:1) Default main console channel initialization (NEW)
(...)
[ ] Virtual block device (NEW)
(...)
[ ] Virtual network device (NEW)

The UML resulting from this configuration is obviously unable to boot. I'm 
really curious how this happened...

> Use rc6 or rc7 - UML/x86_64 runs out of the box there.

Linux 2.6.13rc7?

Great, I will try this soon.
Using a manually fixed config 2.6.12.5bs9 now runs at least on i386. I 
will try this binary inside a 32 bit chroot on x86_64 tomorrow, maybe it 
works. If it does not, I'll try the latest prepatch kernel from 
kernel.org. 

Greetings,

  Gunter
 
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