Re: "Invalid kernel" error in netbsd 4 domU under xen 3.2, linux dom0

[Jim Cipar <jcipar%cs.cmu.edu@localhost>]

On Jan 29, 2008, at 2:39 PM, Silas Silva wrote:

> On Tue, Jan 29, 2008 at 02:36:25PM -0500, Jim Cipar wrote:
> ...
> > It looks like a PAE/Non-PAE mismatch.  If Xen is compiled for PAE, it
> > can only boot PAE guests.  NetBSD Xen/PAE support was merged with
> > current a few days ago (according to the mailing list, I haven't  
> > tried
> > it).  The easiest solution is to use amd64 if you've got the  
> > hardware.
>
> Sorry, forgot to tell the hardware. It is actually a x86 machine  
> (Intel Xeon
> 1.86 GHz Dual Core). But it might have this feature.
>
> I wonder if it would be better (easier and secure (it is a production
> machine)) either to recompile xen or recompile the NetBSD kernel.

If it's a production machine, recompile Xen.  The PAE support in  
NetBSD is very new, and some people have reported problems with it.   
The non-pae xen code is pretty well tested, though it is a pain to  
recompile, and can no longer support >4GB.  We are using 8GB machines,  
which is why we just settled on using amd64.


> Thank you very much.
>
> --
> Silas Silva - http://www.purl.org/NET/silas/site