Re: [Xen-devel] [PATCH] xen: avoid link error on ARM

[Arnd Bergmann <arnd@xxxxxxxx>]

On Tue, Mar 5, 2019 at 7:39 AM Juergen Gross <jgross@xxxxxxxx> wrote:

>
> Can we avoid that ifdef in the Makefile?
>
> I'd rather have an architecture independant builtin driver added which
> is always included for CONFIG_XEN. This would allow to move redundant
> stuff from arch/*/xen/ into it (e.g. xen_vcpu_id).
>
> So: rename mm.c to xen-builtin.c, use:
>
> obj-$(CONFIG_XEN) += xen-builtin.o

Sure, I'm happy to change the naming and the Makefile logic. The way you
suggested sounds fine to me, but it will make the xen code slightly bigger
even if that code is not used. We could also have a silent Kconfig symbol
that turns this on and still avoid the ifdef:

obj-$(CONFIG_XEN_BUILTIN) += xen-builtin.o

(or using any other symbol name that makes more sense than that.

Let me know your preference and I'll resubmit.

      Arnd

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