Re: [Xen-devel] [RFC][PATCH]mini-os: big-endian mini-os on ia64

[Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx>]

Hi Gregor,

Am Donnerstag, 1. März 2007 23:08 schrieb Grzegorz Milos:
> One solution to the rotting problem would be write regression tests.
> High level tests (like for example netfront test) would be quite good at
> picking missing SWAPs, since they exercise a fair amount of Xen/Dom0
> interfaces. Still it's quite hard to check the coverage (anybody happens
> to be an expert on coverage testing?).
>
> I too dislike scattering SWAPs all over the code, but I guess having a
> nice set of wrappers would at least confine the problem. Still ... not
> that fond of it.
>
> Cheers
> Gregor

I send this as a private mail to you.
First thanks for opening a possible door to the SWAP stuff.
I don't full understand your rotting problem.
With recent binutils (see 
http://sources.redhat.com/ml/binutils/2004-07/msg00110.html) everybody on 
ia64 hardware can build big-endian images on a little-endian linux machine. 
Only some special make flags in mini-os/arch/ia64/arch.mk (and the SWAPs) are 
needed to build a big-endian mini-os on ia64-linux. So a running big-endian 
mini-os on xen-ia64 is already a regression test itself I think.
So the most currently used interfaces are checked with a running mini-os. 
Maybe for some more interface regression tests are possible/needed.
What do you think? Where is my mistake in thinking about this?
Thanks.

Dietmar

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