On Thu, Jan 05, 2023 at 03:22:29PM +0000, Will Deacon wrote:
> On Tue, Dec 27, 2022 at 05:12:04PM +0000, Mark Brown wrote:

> > There is no architectural requirement for systems implementing SME to
> > also implement SVE, though it is expected to be an unusual configuration.

> How unusual? If people aren't practically going to build this, I think
> we'd be better off keeping the code simple and not supporting SME unless
> SVE is also present.

I can't comment on anyone's roadmaps, but this is a configuration I've
been asked about by other people rather than just something I thought of
myself so it has been considered and I can see why someone might think
about implementing such a system.  Given that the changes are just
adding system_supports_sme() to existing configuration checks so that we
go through code paths that are already being exercised anyway I think
it's sufficiently non-invasive to justify the cost of handling the case.