Re: [Xen-ia64-devel] [PATCH]: mini-os cleanup and big-endian stuff

[Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx>]

Am Dienstag, 13. MÃrz 2007 15:26 schrieb Alex Williamson:
> On Tue, 2007-03-13 at 07:11 +0100, Dietmar Hahn wrote:
> > Am Montag, 12. MÃrz 2007 19:48 schrieb Alex Williamson:
> > > > By the way: how about the big-endian stuff in mini-os. After the
> > > > discussion with Keir the mini-os maintainer Gregor Milos opened a way
> > > > getting that stuff into the common mini-os sources.
> > > > (http://lists.xensource.com/archives/html/xen-ia64-devel/2007-03/msg0
> > > >0003 .html) If there is an interest on the list, I would try to write
> > > > some wrappers. Otherwise I would send a patch to cleanup all that
> > > > big-endian stuff from ia64 part of mini-os.
> > >
> > >    I think BE support is nice to have around, but as Gregor mentions,
> > > without some test code or a viable BE PV domain it would likely bit rot
> > > very quickly.  Even with test code, someone needs to run it regularly.
> > > If you're up for that, I'll support keeping it in the tree.  Thanks,
> > >
> > >   Alex
> >
> > As I mentioned, we are working on a BE PV domain, so I'am up for that
> > stuff. Thanks for keeping it in the tree.
>
> Hi Dietmar,
>
>    I didn't get the impression that you intended to open source the BE
> PV OS you're working on.  Is that not the case?  I think there needs to
> be some way to regression test with an open source code base (test suite
> or OS).  Thanks,
>
>       Alex
Hi Alex,

you are right, our PV OS will not be open source.
My plan was the mini-os as open source code base for the BE stuff. Maybe I 
didn't express this clear enough. With recent binutils (I think at least 
version 2.16 - I looked at this some time ago, see 
http://sources.redhat.com/ml/binutils/2004-07/msg00110.html) I'am able to 
build a BE mini-os on a normal linux system on ia64 hardware.
With the SWAP stuff in common mini-os sources and some minor patches in the 
ia64 part (makerules and smaller bugs) everybody can build the BE mini-os. 
And this could be used as regression test I think. And for every new feature 
we use from xen-ia64 I would upgrade the mini-os.
For a test case I can send a mini-os patch against current xen-ia64 cset 
therewidth you can test this.
I hope this helps to better understand my intentions.
Thanks.

Dietmar.

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