Re: NetBSD domU ksyms issue under xen 4.1.6.1 and 4.2.3, not under 4.1.2

[Jeff Rizzo <riz%tastylime.net@localhost>]

On 11/18/13 7:22 AM, Jeff Rizzo wrote:
> On 11/18/13 4:38 AM, FastIce wrote:
> > Hello,
> > we have a similar problem (NetBSD 5.0 VM ).
> > we found out that the problem comes from the libxen.
> > in ../<xen>/tools/libxc/xc_dom0.h
> <...>
>
> > /* RETURN VALUE XEN 4.1.2, libxen > 2.9 */
> > /*    return ptr; */
> > /* RETURN VALUE in 2.9 : */
> >      return (ptr + offset);
> > }
> >
> > If you change ther return value back to ptr+offset all should work fine.
> > In our case it does.
> > I am not sure if this is a xen bug or a feature.
> > Can you test this for your case?
>
> Nice work!  I won't be able to test this for a couple of days, but it 
> looks very promising.  I wonder what the libxen folks have to say 
> about it?
>
> +j

Ok, so it took longer than a couple of days for me to get around to 
this.  :)  I have some mixed results to report:

The patch fixes my problem when applied to our xentools41-4.1.6.1 
package, but it does *not* fix the (same, for me) problem with 
xentools42-4.2.3.

Unfortunately, I'm not that familiar with the Xen libraries - does 
anyone know of perhaps another place in the code where a similar problem 
may have been introduced?  The patch applied successfully to both 
versions, but only seemed to fix 4.1.  :(

+j