Re: XEN0 Kernel not booting on Athlon XP 64 X2 4400+

[KlinT <klint%klintcentral.net@localhost>]

Hi all,

On 2 avr. 06, at 14:50, Manuel Bouyer wrote:

> On Sun, Apr 02, 2006 at 01:44:47AM +0200, KlinT wrote:
> > Hi all,
> >
> > Well I'm trying to setup Xen 2.0.7 on my new Athlon 64 X2 computer ...
> > I'm running NetBSD 3.99.17 and everything runs ok ( maybe except for
> > the SATA.II feature ) ...
> >
> > So I install Xen as usual, according to the documentation ...
> >
> > The problem is when I'm trying to boot the XEN0 kernel. I got a kernel
> > error ( swapper error ) and then I enter the debugger ... :(
> > I've found that problem comes with USB/FireWire components, so I
> > disable them in the bios and try to boot again the XEN0 kernel ...
> > Same problem but not at the same place :(
>
> Can you post the panic message, and eventually the stack trace ?

I'd like too but there is no "panic message" just a system freeze

I've just build a fresh XEN0 kernel ... Here are the very last lines :

boot device:wd0
root on wd0a dumps on wd0b
mountroot: trying lsf ...
mountroot: trying ffs ...
root file system type: ffs
init: copying out path '/bin/init' 11

---> The kernel stops there without any informations ...

> > I've tried to build my own kernel from the source. I've successfully
> > built the toolchain, and a XEN0 kernel using build.sh.
> > but trying to boot this kernel fails too ... Now, the system freeze 
> > ...
> > but never at the same place.
> > Some times the boot process reach network configuration and then 
> > freeze
> > ... I was not able to boot entirely my system.
> >
> > Any idea ??
> >
> > I think that I have a similar problem than "Florent Parent" who post
> > this thread "XEN0 kernel with options MULTIPROCESSOR".
> > And my kernel is not able to deal with the dual-core architecture of 
> > my
> > cpu ...
>
> No, it's not the same problem. With Xen-2, all multiprocessor support 
> is
> in the Xen kernel, not in the dom0 kernel. The domain kernels don't 
> even
> know if they're on a multiprocessor or not.

Understood ...

> > I've also try to optimize the build using some options in /etc/mk.conf
> > and the package pkgsrc/devel/cpuflags ... Don't know if it really 
> > works
> > ...
>
> Can you try without the flags ? It's possible that some special flags
> triggers compilers bugs, optimisations issues or use some instructions
> that are not handled by Xen.

I'll try this now ...
I'll let you know about the results ...

> --
> Manuel Bouyer <bouyer%antioche.eu.org@localhost>
>      NetBSD: 26 ans d'experience feront toujours la difference
> --
Thanks a lot Manuel.