l4linux starting - How can I see all Debug messages on serial line ?

[Adam Lackorzynski]

On Mon Jul 29, 2013 at 18:39:04 +0200, Rudolf Weber wrote:
> >> >> Question1: How can I see the error messages of L4linux on serial lines?
> >> >Add console=ttyLv0 to the L4Linux argument list.
> >> So I can see the output on all configurations.
> >>
> >> The state is now:
> >> 1) Linux-conf x86-ux_defconfig without mag : runs
> >> 2) Linux-conf x86-ux_defconfig with mag : runs
> >> 3) Linux-conf x86_rw_config without mag : runs
> >> 4) Linux-conf x86_rw-config with mag : error
> >>
> >> My x86_rw-config is in the Attachment.
> >> The error is:
> >>
> >> attempt to access beyond end of device
> >> ram0: rw=0, want=4764729332, limit=8000
> >> Buffer I/O error on device ram0, logical block 2382364665
> >> attempt to access beyond end of device
> >> ram0: rw=0, want=4606413050, limit=8000
> >> Buffer I/O error on device ram0, logical block 2303206524
> >>
> >> Attachement log_ioerror ist the whole output.
> >>
> >> Why this IO-Error ?
> >> Does something overwrites the ramdisk ? Or is the ramdisk shortened ?
> >>
> >> I give in qemu 1024M and Linux in the cmdline 128M,but the phenomenon is still there.
> 
> >When the ramdisk is too big for Linux, it will complain.
> >Since the same config works when not starting mag(?) does it work when
> >just not giving the fb cap to L4Linux?
> 
> Yes, I reproduced again by modifing the configuratin:
> * adding fb_drv - in the list - it works
> * without mag it works, with mag it failes.
> * If I don't give the fb-cap to L4Linux,  I can't see the l4linux-Window - this is what I expect.
> 
> I now put the mag-module as last module (behind the ramdisk for linux) - I expect, the order of further modules don't matter
> ->/home/rw/l4exp/l4re-snapshot-2013060718/src/l4/pkg/bootstrap/server/src/startup.cc:526: void try_move_module(const Region&, l4util_mb_info_t*, unsigned int, long unsigned int, unsigned int): Assertion `to' failed.
> -> unsigned long long to = regions.find_free(module_area, size, L4_PAGESHIFT);
>    returns null
> 
> May this destroy the ramdisk too ?
> 
> (Oh, I remember: I applied the patch from http://os.inf.tu-dresden.de/pipermail/l4-hackers/2013/005903.html
>  to fix the bootstrap-problemon x86_64 of the hello world-Application.
>  Since l4linux is not ported to x86_64, I tried x86)

Could you try without the patch please?



Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/