[PATCH v2] arm64/sme: Move storage of reg_smidr to __cpuinfo_store_cpu()

[Mark Brown]

On Tue, Dec 17, 2024 at 08:27:07AM +0000, Marc Zyngier wrote:

> My reading of the thread was that we don't need to kill the
> arm64.nosme option as SMIDR_EL1 wouldn't UNDEF, which is guaranteed if
> SME is implemented at all.

My read had been the other way around, I'll drop the change to the
override.

> What was needed in 6.0 is not there anymore, for all the reasons that
> Mark outlined and that you have pasted in the above commit message.

That's a rewrite of roughly the same stuff!  I pasted the commit IDs but
the rest was a rewrite.
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