[Xen-devel] Re: Xen reboots when trying to start new domain

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

> > 
> > I'm running what was 1.1301 at the time of the clone (xen.bkbits.net
> > indicates that it is now 1.1280.1.21) on a dual opteron with 8GB
> > running in 32-bit mode.
> > 
> > title Xen 1.1301 / XenoLinux 2.6.8.1
> >         kernel /xen-1.1301.gz dom0_mem=262144 com1=9600,8n1 pdb=com1H 
> > console=com1 noreboot
> >         module /vmlinuz-1.1301 root=/dev/hda3 ro
> > 
> > 
> > 
> > The FreeBSD domain builder works fine running against 1.1229, however,
> > on the more recent snapshot the following occurs:
> > 
> > in my login:
> 
> Does your builder try to map a page table at more than one place in
> the initial page directory (e.g., to provide FreeBSD with a
> start-of-day mapping of its memory starting at zero)?
> 
> That isn't allowed any more. :-)
> 
>  -- Keir

The crash is potentially interesting. Your output looks as though
there was no crash dump before rebooting - a sure sign of a triple
fault. However, they are very rare indeed. Is it possible you lost any
console output? For example, BIOS/GRUB screens sometimes erase parts
of a serial dump in an effort to 'draw' themselves. :-)

How would the FreeBSD builder react to a one of its mmu_update
requests failing?

 -- Keir


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