Re: [Xen-devel] [PATCH v4 1/8] xen: import ring.h from xen

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 29 Mar 2017, Paolo Bonzini wrote:
> On 29/03/2017 01:54, Stefano Stabellini wrote:
> >>> I understand your point of view, and honestly it wouldn't be a problem
> >>> doing it the way you suggested either. However, I think that going
> >>> forward it will be less of a maintenance pain to keep ring.h in sync,
> >>> compared to maintaining a versioned build dependency between Xen and
> >>> QEMU for the compilation of one PV backend. We do have version checks
> >>> in QEMU for Xen compatibility, but not for PV backends or the xenpv
> >>> machine yet.
> >> For the pvUSB backend I just used a mandatory macro from the header for
> >> the #ifdef. The backend will signal support when it was defined during
> >> build and will refuse initialization otherwise. Xen tools are able to
> >> recoginze qemu support of the backend by looking into Xenstore.
> > 
> > What do you think of the following:
> 
> Let's just copy the header...

It's settled.

Thanks,

Stefano

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