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Re: [Xen-devel] [PATCH] rump kernels: use new platform macro



On Tue, Feb 03, 2015 at 01:27:54PM +0000, Ian Campbell wrote:
> On Tue, 2015-02-03 at 13:10 +0000, Wei Liu wrote:
> > Starting from rump kernel changeset 91d5623 ("Renaming platform macros,
> > app-tools and autoconf target string"), __RUMPUSER_XEN__ and __RUMPAPP__
> > are deleted. We are supposed to use __RUMPRUN__ instead.
> 
> How much do we care about forward/backwards compat here?
> 

I don't think rump kernel ever declared a macro stable for a specific
version. In fact, rump kernel is not yet officially released AFAICT.

> One specific potential wrinkle:
> 
> I suspect rumpkernel changeset 91d5623 cannot pass the rump kernel push
> gate without this change in the xen being used (which is the output opf
> the Xen gate), and this change cannot pass the xen-unstable push gate
> without the rumpkernel one, so we have an impasse.
> 

Ah, yes. I missed that xen-unstable is also gated by rump kernel build.

> I think we probably need libxc to handle both __RUMPRUN__ and
> __RUMPUSER_XEN_, at least for the time being (which might be a very
> short time while the other change passes its gate).

I will resend a patch to have both __RUMPRUN__ and __RUMPUSER_XEN__.

Wei.

> 
> Ian.

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