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Re: [Xen-devel] PVHVM drivers in upstream linux kernel



On 02/12/14 11:33, Juergen Gross wrote:
> 
> I think we have customers wanting to run a default kernel as domU. So it
> isn't always the distro refusing paravirt, it might be the user...

I don't think this is a sensible use case but I'm not adverse to
improving the set of Xen config options.

> To sort things out I'd suggest to:
> - make XEN independent from PARAVIRT
> - let XEN_DOM0 select XEN_BACKEND, PARAVIRT, XEN
> - let XEN_BACKEND select PARAVIRT, XEN (I'd like to be able to build
>   a driver domain without XEN_DOM0)
> - introduce XEN_FRONTEND, let it select XEN
> - let frontend drivers and drivers needed by those depend on
>   XEN_FRONTEND
> - let XEN_PVHVM select XEN_FRONTEND

Rather than looking at the current set of configuration options, can you
look at what user-visible functionality or use cases need to be covered
by a (potentially new) set of configuration options?

> - don't skip drivers/xen on make, as XEN might be selected via a
>   config item in that directory

I don't think this matters.

David

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