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xen-ia64-devel
[Xen-ia64-devel] Re: Exporting native protocol ABI from domain builder
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?
> 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
--
Alex Williamson HP Open Source & Linux Org.
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