[Xen-ia64-devel] Re: Exporting native protocol ABI from domain builder

[Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx>]

Hi Alex, Ian,

Am Dienstag, 15. Mai 2007 schrieb Alex Williamson:
> Hi Ian,
>
> On Tue, 2007-05-15 at 18:26 +0100, Ian Campbell wrote:
> > Hi guys,
> >
> > I'm not entirely sure this makes any sense for you since I don't think
> > either of you have 32on64 PV support but nevertheless here are the ia64
> > and powerpc patches that go with xen-unstable.hg 15074:5c7a1e3abd54
>
>    Correct, ia64 doesn't support any 32bit guests and I haven't heard of
> anyone thinking of changing that.
>
> > I'm especially unsure about the value for xen-3.0-ia64be, does the
> > driver do the byte swapping itself or is a new protocol string required?
>
>    Good question, IIRC I/O is kind of up in the air for big-endian
> guests right now.  Dietmar did some patches but got resistance from
> upstream.  So for now, not introducing a BE protocol ABI is probably
> correct.  Dietmar, do you agree?
Yes, this is OK.
Thanks.

Dietmar.

>
> > In the absence of any mixed mode support on your platforms it's harmless
> > to not apply but if you think it makes sense please go ahead.
>
>    It looks reasonable to me and does give us a little flexibility
> should we decide to differentiate based on endian-ness at some point in
> the future.  Thanks for thinking of us!
>
>       Alex


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